19 Commits

Author SHA1 Message Date
Michael Bestas
7eae069564 Merge remote-tracking branch 'common/deprecated/android-4.4' into android-msm-wahoo-4.4
# By Chao Yu (415) and others
# Via Greg Kroah-Hartman (53) and others
* google/common/deprecated/android-4.4:
  ANDROID: regression introduced override_creds=off
  ANDROID: sched: Disallow WALT with CFS bandwidth control
  ANDROID: fiq_debugger: remove
  ANDROID: Add a tracepoint for mapping inode to full path
  ANDROID: fix binder change in merge of 4.4.183
  UPSTREAM: net-ipv6-ndisc: add support for RFC7710 RA Captive Portal Identifier
  f2fs: use EINVAL for superblock with invalid magic
  f2fs: fix to read source block before invalidating it
  f2fs: remove redundant check from f2fs_setflags_common()
  f2fs: use generic checking and prep function for FS_IOC_SETFLAGS
  ANDROID: overlayfs: Fix a regression in commit b24be4acd
  ANDROID: xfrm: remove in_compat_syscall() checks
  ANDROID: enable CONFIG_RTC_DRV_TEST on cuttlefish
  BACKPORT: binder: Set end of SG buffer area properly.
  ANDROID: overlayfs ovl_create_of_link regression
  f2fs: improve print log in f2fs_sanity_check_ckpt()
  f2fs: avoid out-of-range memory access
  f2fs: fix to avoid long latency during umount
  f2fs: allow all the users to pin a file
  f2fs: support swap file w/ DIO
  f2fs: allocate blocks for pinned file
  f2fs: fix is_idle() check for discard type
  f2fs: add a rw_sem to cover quota flag changes
  f2fs: set SBI_NEED_FSCK for xattr corruption case
  f2fs: use generic EFSBADCRC/EFSCORRUPTED
  f2fs: Use DIV_ROUND_UP() instead of open-coding
  f2fs: print kernel message if filesystem is inconsistent
  f2fs: introduce f2fs_<level> macros to wrap f2fs_printk()
  f2fs: avoid get_valid_blocks() for cleanup
  f2fs: ioctl for removing a range from F2FS
  f2fs: only set project inherit bit for directory
  f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags
  ANDROID: Fixes to locking around handle_lmk_event
  ANDROID: Avoid taking multiple locks in handle_lmk_event
  ANDROID: kernel: cgroup: cpuset: Clear cpus_requested for empty buf
  ANDROID: kernel: cgroup: cpuset: Add missing allocation of cpus_requested in alloc_trial_cpuset
  f2fs: Add option to limit required GC for checkpoint=disable
  f2fs: Fix accounting for unusable blocks
  f2fs: Fix root reserved on remount
  f2fs: Lower threshold for disable_cp_again
  f2fs: fix sparse warning
  f2fs: fix f2fs_show_options to show nodiscard mount option
  f2fs: add error prints for debugging mount failure
  f2fs: fix to do sanity check on segment bitmap of LFS curseg
  f2fs: add missing sysfs entries in documentation
  f2fs: fix to avoid deadloop if data_flush is on
  f2fs: always assume that the device is idle under gc_urgent
  f2fs: add bio cache for IPU
  f2fs: allow ssr block allocation during checkpoint=disable period
  f2fs: fix to check layout on last valid checkpoint park
  UPSTREAM: binder: check for overflow when alloc for security context
  BACKPORT: binder: fix race between munmap() and direct reclaim
  f2fs: link f2fs quota ops for sysfile
  fs: sdcardfs: Add missing option to show_options
  ANDROID: cuttlefish_defconfig: Disable DEVTMPFS
  ANDROID: Move from clang r349610 to r353983c.
  f2fs: fix to avoid accessing xattr across the boundary
  f2fs: fix to avoid potential race on sbi->unusable_block_count access/update
  f2fs: add tracepoint for f2fs_filemap_fault()
  f2fs: introduce DATA_GENERIC_ENHANCE
  f2fs: fix to handle error in f2fs_disable_checkpoint()
  f2fs: remove redundant check in f2fs_file_write_iter()
  f2fs: fix to be aware of readonly device in write_checkpoint()
  f2fs: fix to skip recovery on readonly device
  f2fs: fix to consider multiple device for readonly check
  f2fs: relocate chksum_offset for large_nat_bitmap feature
  f2fs: allow unfixed f2fs_checkpoint.checksum_offset
  f2fs: Replace spaces with tab
  f2fs: insert space before the open parenthesis '('
  f2fs: allow address pointer number of dnode aligning to specified size
  f2fs: introduce f2fs_read_single_page() for cleanup
  f2fs: mark is_extension_exist() inline
  f2fs: fix to set FI_UPDATE_WRITE correctly
  f2fs: fix to avoid panic in f2fs_inplace_write_data()
  f2fs: fix to do sanity check on valid block count of segment
  f2fs: fix to do sanity check on valid node/block count
  f2fs: fix to avoid panic in do_recover_data()
  f2fs: fix to do sanity check on free nid
  f2fs: fix to do checksum even if inode page is uptodate
  f2fs: fix to avoid panic in f2fs_remove_inode_page()
  f2fs: fix to clear dirty inode in error path of f2fs_iget()
  f2fs: remove new blank line of f2fs kernel message
  f2fs: fix wrong __is_meta_io() macro
  f2fs: fix to avoid panic in dec_valid_node_count()
  f2fs: fix to avoid panic in dec_valid_block_count()
  f2fs: fix to use inline space only if inline_xattr is enable
  f2fs: fix to retrieve inline xattr space
  f2fs: fix error path of recovery
  f2fs: fix to avoid deadloop in foreground GC
  f2fs: data: fix warning Using plain integer as NULL pointer
  f2fs: add tracepoint for f2fs_file_write_iter()
  f2fs: add comment for conditional compilation statement
  f2fs: fix potential recursive call when enabling data_flush
  f2fs: improve discard handling with multi-device volumes
  f2fs: Reduce zoned block device memory usage
  f2fs: Fix use of number of devices
  ANDROID: Communicates LMK events to userland where they can be logged
  Make arm64 serial port config compatible with crosvm
  Fix merge issue with 4.4.178
  Fix merge issue with 4.4.177
  ANDROID: cuttlefish_defconfig: Enable CONFIG_OVERLAY_FS
  ANDROID: drop CONFIG_INPUT_KEYCHORD from cuttlefish and ranchu
  UPSTREAM: virt_wifi: Remove REGULATORY_WIPHY_SELF_MANAGED
  UPSTREAM: net: socket: set sock->sk to NULL after calling proto_ops::release()
  Revert "ANDROID: arm: process: Add display of memory around registers when displaying regs."
  f2fs: set pin_file under CAP_SYS_ADMIN
  f2fs: fix to avoid deadlock in f2fs_read_inline_dir()
  f2fs: fix to adapt small inline xattr space in __find_inline_xattr()
  f2fs: fix to do sanity check with inode.i_inline_xattr_size
  f2fs: give some messages for inline_xattr_size
  f2fs: don't trigger read IO for beyond EOF page
  f2fs: fix to add refcount once page is tagged PG_private
  f2fs: remove wrong comment in f2fs_invalidate_page()
  f2fs: fix to use kvfree instead of kzfree
  f2fs: print more parameters in trace_f2fs_map_blocks
  f2fs: trace f2fs_ioc_shutdown
  f2fs: fix to avoid deadlock of atomic file operations
  f2fs: fix to dirty inode for i_mode recovery
  f2fs: give random value to i_generation
  f2fs: no need to take page lock in readdir
  f2fs: fix to update iostat correctly in IPU path
  f2fs: fix encrypted page memory leak
  f2fs: make fault injection covering __submit_flush_wait()
  f2fs: fix to retry fill_super only if recovery failed
  f2fs: silence VM_WARN_ON_ONCE in mempool_alloc
  f2fs: correct spelling mistake
  f2fs: fix wrong #endif
  f2fs: don't clear CP_QUOTA_NEED_FSCK_FLAG
  f2fs: don't allow negative ->write_io_size_bits
  f2fs: fix to check inline_xattr_size boundary correctly
  ANDROID: mnt: Propagate remount correctly
  ANDROID: cuttlefish_defconfig: Add support for AC97 audio
  ANDROID: overlayfs: override_creds=off option bypass creator_cred
  FROMGIT: binder: create node flag to request sender's security context
  Revert "f2fs: fix to avoid deadlock of atomic file operations"
  Revert "f2fs: fix to check inline_xattr_size boundary correctly"
  BACKPORT: userfaultfd: shmem/hugetlbfs: only allow to register VM_MAYWRITE vmas
  ANDROID: cuttlefish_defconfig: Enable DEBUG_SET_MODULE_RONX
  ANDROID: Move from clang r346389b to r349610.
  UPSTREAM: virt_wifi: fix error return code in virt_wifi_newlink()
  ion: Disable ION_HEAP_TYPE_SYSTEM_CONTIG
  UPSTREAM: binder: filter out nodes when showing binder procs
  f2fs: do not use mutex lock in atomic context
  f2fs: fix potential data inconsistence of checkpoint
  f2fs: fix to avoid deadlock of atomic file operations
  f2fs: fix to check inline_xattr_size boundary correctly
  f2fs: jump to label 'free_node_inode' when failing from d_make_root()
  f2fs: fix to document inline_xattr_size option
  f2fs: fix to data block override node segment by mistake
  f2fs: fix typos in code comments
  f2fs: sync filesystem after roll-forward recovery
  fs: export evict_inodes
  f2fs: flush quota blocks after turnning it off
  f2fs: avoid null pointer exception in dcc_info
  f2fs: don't wake up too frequently, if there is lots of IOs
  f2fs: try to keep CP_TRIMMED_FLAG after successful umount
  f2fs: add quick mode of checkpoint=disable for QA
  f2fs: run discard jobs when put_super
  f2fs: fix to set sbi dirty correctly
  f2fs: UBSAN: set boolean value iostat_enable correctly
  f2fs: add brackets for macros
  f2fs: check if file namelen exceeds max value
  f2fs: fix to trigger fsck if dirent.name_len is zero
  f2fs: no need to check return value of debugfs_create functions
  f2fs: export FS_NOCOW_FL flag to user
  f2fs: check inject_rate validity during configuring
  f2fs: remove set but not used variable 'err'
  f2fs: fix compile warnings: 'struct *' declared inside parameter list
  f2fs: change error code to -ENOMEM from -EINVAL
  ANDROID: cuttlefish_defconfig: Enable CONFIG_RTC_HCTOSYS
  UPSTREAM: dm: do not allow readahead to limit IO size
  UPSTREAM: readahead: stricter check for bdi io_pages
  UPSTREAM: mm: don't cap request size based on read-ahead setting
  ANDROID: Fix cuttlefish redundant vsock connection.
  UPSTREAM: loop: drop caches if offset or block_size are changed
  UPSTREAM: virtio: new feature to detect IOMMU device quirk
  UPSTREAM: vring: Use the DMA API on Xen
  UPSTREAM: virtio_ring: Support DMA APIs
  UPSTREAM: vring: Introduce vring_use_dma_api()
  ANDROID: cuttlefish_defconfig: Enable vsock options
  UPSTREAM: vhost/vsock: fix reset orphans race with close timeout
  UPSTREAM: vhost/vsock: fix use-after-free in network stack callers
  UPSTREAM: vhost: correctly check the iova range when waking virtqueue
  UPSTREAM: vhost: synchronize IOTLB message with dev cleanup
  UPSTREAM: vhost: fix info leak due to uninitialized memory
  UPSTREAM: vhost: fix vhost_vq_access_ok() log check
  UPSTREAM: vhost: validate log when IOTLB is enabled
  UPSTREAM: vhost_net: add missing lock nesting notation
  UPSTREAM: vhost: use mutex_lock_nested() in vhost_dev_lock_vqs()
  UPSTREAM: vhost/vsock: fix uninitialized vhost_vsock->guest_cid
  UPSTREAM: vhost_net: correctly check tx avail during rx busy polling
  UPSTREAM: vsock: use new wait API for vsock_stream_sendmsg()
  UPSTREAM: vsock: cancel packets when failing to connect
  UPSTREAM: vhost-vsock: add pkt cancel capability
  UPSTREAM: vsock: track pkt owner vsock
  UPSTREAM: vhost: fix initialization for vq->is_le
  UPSTREAM: vhost/vsock: handle vhost_vq_init_access() error
  UPSTREAM: vsock: lookup and setup guest_cid inside vhost_vsock_lock
  UPSTREAM: vhost-vsock: fix orphan connection reset
  UPSTREAM: vsock/virtio: fix src/dst cid format
  UPSTREAM: VSOCK: Don't dec ack backlog twice for rejected connections
  UPSTREAM: vhost/vsock: drop space available check for TX vq
  UPSTREAM: virtio-vsock: fix include guard typo
  UPSTREAM: vhost/vsock: fix vhost virtio_vsock_pkt use-after-free
  UPSTREAM: VSOCK: Use kvfree()
  BACKPORT: vhost: split out vringh Kconfig
  UPSTREAM: vhost: drop vringh dependency
  UPSTREAM: vhost: drop vringh dependency
  UPSTREAM: vhost: detect 32 bit integer wrap around
  UPSTREAM: VSOCK: Add Makefile and Kconfig
  UPSTREAM: VSOCK: Introduce vhost_vsock.ko
  UPSTREAM: VSOCK: Introduce virtio_transport.ko
  BACKPORT: VSOCK: Introduce virtio_vsock_common.ko
  UPSTREAM: VSOCK: defer sock removal to transports
  UPSTREAM: VSOCK: transport-specific vsock_transport functions
  UPSTREAM: vsock: make listener child lock ordering explicit
  UPSTREAM: vhost: new device IOTLB API
  BACKPORT: vhost: convert pre sorted vhost memory array to interval tree
  UPSTREAM: vhost: introduce vhost memory accessors
  UPSTREAM: vhost_net: stop polling socket during rx processing
  UPSTREAM: VSOCK: constify vsock_transport structure
  UPSTREAM: vhost: lockless enqueuing
  UPSTREAM: vhost: simplify work flushing
  UPSTREAM: VSOCK: Only check error on skb_recv_datagram when skb is NULL
  BACKPORT: AF_VSOCK: Shrink the area influenced by prepare_to_wait
  UPSTREAM: vhost_net: basic polling support
  UPSTREAM: vhost: introduce vhost_vq_avail_empty()
  UPSTREAM: vhost: introduce vhost_has_work()
  UPSTREAM: vhost: rename vhost_init_used()
  UPSTREAM: vhost: rename cross-endian helpers
  UPSTREAM: vhost: fix error path in vhost_init_used()
  UPSTREAM: virtio: make find_vqs() checkpatch.pl-friendly
  UPSTREAM: net: move napi_hash[] into read mostly section
  ANDROID: cuttlefish_defconfig: remove DM_VERITY_HASH_PREFETCH_MIN_SIZE
  Revert "ANDROID: dm verity: add minimum prefetch size"
  ANDROID: f2fs: Complement "android_fs" tracepoint of read path
  f2fs: don't access node/meta inode mapping after iput
  f2fs: wait on atomic writes to count F2FS_CP_WB_DATA
  f2fs: sanity check of xattr entry size
  f2fs: fix use-after-free issue when accessing sbi->stat_info
  f2fs: check PageWriteback flag for ordered case
  f2fs: fix validation of the block count in sanity_check_raw_super
  f2fs: fix missing unlock(sbi->gc_mutex)
  f2fs: clean up structure extent_node
  f2fs: fix block address for __check_sit_bitmap
  f2fs: fix sbi->extent_list corruption issue
  f2fs: clean up checkpoint flow
  f2fs: flush stale issued discard candidates
  f2fs: correct wrong spelling, issing_*
  f2fs: use kvmalloc, if kmalloc is failed
  f2fs: remove redundant comment of unused wio_mutex
  f2fs: fix to reorder set_page_dirty and wait_on_page_writeback
  f2fs: clear PG_writeback if IPU failed
  f2fs: add an ioctl() to explicitly trigger fsck later
  f2fs: avoid frequent costly fsck triggers
  f2fs: fix m_may_create to make OPU DIO write correctly
  f2fs: fix to update new block address correctly for OPU
  f2fs: adjust trace print in f2fs_get_victim() to cover all paths
  f2fs: fix to allow node segment for GC by ioctl path
  f2fs: make "f2fs_fault_name[]" const char *
  f2fs: read page index before freeing
  f2fs: fix wrong return value of f2fs_acl_create
  f2fs: avoid build warn of fall_through
  f2fs: fix race between write_checkpoint and write_begin
  f2fs: check memory boundary by insane namelen
  f2fs: only flush the single temp bio cache which owns the target page
  f2fs: fix out-place-update DIO write
  f2fs: fix to be aware discard/preflush/dio command in is_idle()
  f2fs: add to account direct IO
  f2fs: move dir data flush to write checkpoint process
  f2fs: change segment to section in f2fs_ioc_gc_range
  f2fs: export migration_granularity sysfs entry
  f2fs: support subsectional garbage collection
  f2fs: introduce __is_large_section() for cleanup
  f2fs: clean up f2fs_sb_has_##feature_name
  f2fs: remove codes of unused wio_mutex
  f2fs: fix count of seg_freed to make sec_freed correct
  f2fs: fix to account preflush command for noflush_merge mode
  f2fs: avoid GC causing encrypted file corrupted
  ANDROID: cuttlefish_defconfig: Enable VIRTIO_INPUT
  ANDROID: Revert fs/squashfs back to linux-4.4.y
  ANDROID: uid_sys_stats: Copy task_struct comm field to bigger buffer
  ANDROID: cuttlefish_defconfig: Enable VIRT_WIFI
  FROMGIT, BACKPORT: mac80211-next: rtnetlink wifi simulation device
  ANDROID: Move from clang r328903 to r346389b.
  UPSTREAM: binder: fix race that allows malicious free of live buffer
  ANDROID: arm64 defconfig / build config for cuttlefish
  ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple
  Revert "ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple"
  ANDROID: sdcardfs: Add option to not link obb
  ANDROID: sdcardfs: Add sandbox
  UPSTREAM: seccomp: Fix tracer exit notifications during fatal signals
  UPSTREAM: arm64/ptrace: run seccomp after ptrace
  UPSTREAM: arm/ptrace: run seccomp after ptrace
  BACKPORT: x86/ptrace: run seccomp after ptrace
  UPSTREAM: seccomp: recheck the syscall after RET_TRACE
  UPSTREAM: seccomp: remove 2-phase API
  BACKPORT: x86/entry: Get rid of two-phase syscall entry work
  BACKPORT: seccomp: Add a seccomp_data parameter secure_computing()
  BACKPORT: x86/entry/64: Always run ptregs-using syscalls on the slow path
  UPSTREAM: x86/syscalls: Add syscall entry qualifiers
  UPSTREAM: x86/syscalls: Move compat syscall entry handling into syscalltbl.sh
  UPSTREAM: x86/syscalls: Remove __SYSCALL_COMMON and __SYSCALL_X32
  UPSTREAM: x86/syscalls: Refactor syscalltbl.sh
  Makefile: Tidy up 4.4.165 merge
  ANDROID: zram: set comp_len to PAGE_SIZE when page is huge
  BACKPORT: xfrm: Allow Output Mark to be Updated Using UPDSA
  ANDROID: sdcardfs: Add option to drop unused dentries
  f2fs: guarantee journalled quota data by checkpoint
  f2fs: cleanup dirty pages if recover failed
  f2fs: fix data corruption issue with hardware encryption
  f2fs: fix to recover inode->i_flags of inode block during POR
  f2fs: spread f2fs_set_inode_flags()
  f2fs: fix to spread clear_cold_data()
  Revert "f2fs: fix to clear PG_checked flag in set_page_dirty()"
  f2fs: account read IOs and use IO counts for is_idle
  f2fs: fix to account IO correctly for cgroup writeback
  f2fs: fix to account IO correctly
  f2fs: remove request_list check in is_idle()
  f2fs: allow to mount, if quota is failed
  f2fs: update REQ_TIME in f2fs_cross_rename()
  f2fs: do not update REQ_TIME in case of error conditions
  f2fs: remove unneeded disable_nat_bits()
  f2fs: remove unused sbi->trigger_ssr_threshold
  f2fs: shrink sbi->sb_lock coverage in set_file_temperature()
  f2fs: fix to recover cold bit of inode block during POR
  f2fs: submit cached bio to avoid endless PageWriteback
  f2fs: checkpoint disabling
  f2fs: clear PageError on the read path
  f2fs: allow out-place-update for direct IO in LFS mode
  f2fs: refactor ->page_mkwrite() flow
  Revert: "f2fs: check last page index in cached bio to decide submission"
  f2fs: support superblock checksum
  f2fs: add to account skip count of background GC
  f2fs: add to account meta IO
  f2fs: keep lazytime on remount
  f2fs: fix missing up_read
  f2fs: return correct errno in f2fs_gc
  f2fs: avoid f2fs_bug_on if f2fs_get_meta_page_nofail got EIO
  f2fs: mark inode dirty explicitly in recover_inode()
  f2fs: fix to recover inode's crtime during POR
  f2fs: fix to recover inode's i_gc_failures during POR
  f2fs: fix to recover inode's i_flags during POR
  f2fs: fix to recover inode's project id during POR
  f2fs: update i_size after DIO completion
  f2fs: report ENOENT correctly in f2fs_rename
  f2fs: fix remount problem of option io_bits
  f2fs: fix to recover inode's uid/gid during POR
  f2fs: avoid infinite loop in f2fs_alloc_nid
  f2fs: add new idle interval timing for discard and gc paths
  f2fs: split IO error injection according to RW
  f2fs: add SPDX license identifiers
  f2fs: surround fault_injection related option parsing using CONFIG_F2FS_FAULT_INJECTION
  f2fs: avoid sleeping under spin_lock
  f2fs: plug readahead IO in readdir()
  f2fs: fix to do sanity check with current segment number
  f2fs: fix memory leak of percpu counter in fill_super()
  f2fs: fix memory leak of write_io in fill_super()
  f2fs: cache NULL when both default_acl and acl are NULL
  f2fs: fix to flush all dirty inodes recovered in readonly fs
  f2fs: report error if quota off error during umount
  f2fs: submit bio after shutdown
  f2fs: avoid wrong decrypted data from disk
  Revert "f2fs: use printk_ratelimited for f2fs_msg"
  f2fs: fix unnecessary periodic wakeup of discard thread when dev is busy
  f2fs: fix to avoid NULL pointer dereference on se->discard_map
  f2fs: add additional sanity check in f2fs_acl_from_disk()
  Revert "BACKPORT, FROMLIST: fscrypt: add Speck128/256 support"
  Build fix for 076c36fce1.
  Revert "BACKPORT, FROMGIT: crypto: speck - add support for the Speck block cipher"
  Revert "FROMGIT: crypto: speck - export common helpers"
  Revert "BACKPORT, FROMGIT: crypto: arm/speck - add NEON-accelerated implementation of Speck-XTS"
  Revert "BACKPORT, FROMGIT: crypto: speck - add test vectors for Speck128-XTS"
  Revert "BACKPORT, FROMGIT: crypto: speck - add test vectors for Speck64-XTS"
  Revert "BACKPORT, FROMLIST: crypto: arm64/speck - add NEON-accelerated implementation of Speck-XTS"
  Revert "fscrypt: add Speck128/256 support"
  UPSTREAM: loop: Add LOOP_SET_BLOCK_SIZE in compat ioctl
  BACKPORT: block/loop: set hw_sectors
  UPSTREAM: loop: add ioctl for changing logical block size
  ANDROID: usb: gadget: f_mtp: Return error if count is negative
  ANDROID: x86_64_cuttlefish_defconfig: disable CONFIG_MEMORY_STATE_TIME
  ANDROID: sdcardfs: Change current->fs under lock
  ANDROID: sdcardfs: Don't use OVERRIDE_CRED macro
  Revert "f2fs: use timespec64 for inode timestamps"
  ANDROID: restrict store of prefer_idle as boolean
  BACKPORT: arm/syscalls: Optimize address limit check
  UPSTREAM: syscalls: Use CHECK_DATA_CORRUPTION for addr_limit_user_check
  BACKPORT: arm64/syscalls: Check address limit on user-mode return
  BACKPORT: x86/syscalls: Check address limit on user-mode return
  BACKPORT: lkdtm: add bad USER_DS test
  UPSTREAM: bug: switch data corruption check to __must_check
  BACKPORT: lkdtm: Add tests for struct list corruption
  UPSTREAM: bug: Provide toggle for BUG on data corruption
  UPSTREAM: list: Split list_del() debug checking into separate function
  UPSTREAM: rculist: Consolidate DEBUG_LIST for list_add_rcu()
  BACKPORT: list: Split list_add() debug checking into separate function
  FROMLIST: ANDROID: binder: Add BINDER_GET_NODE_INFO_FOR_REF ioctl.
  f2fs: readahead encrypted block during GC
  f2fs: avoid fi->i_gc_rwsem[WRITE] lock in f2fs_gc
  f2fs: fix performance issue observed with multi-thread sequential read
  f2fs: fix to skip verifying block address for non-regular inode
  f2fs: rework fault injection handling to avoid a warning
  f2fs: support fault_type mount option
  f2fs: fix to return success when trimming meta area
  f2fs: fix use-after-free of dicard command entry
  f2fs: support discard submission error injection
  f2fs: split discard command in prior to block layer
  f2fs: wake up gc thread immediately when gc_urgent is set
  f2fs: fix incorrect range->len in f2fs_trim_fs()
  f2fs: refresh recent accessed nat entry in lru list
  f2fs: fix avoid race between truncate and background GC
  f2fs: avoid race between zero_range and background GC
  f2fs: fix to do sanity check with block address in main area v2
  f2fs: fix to do sanity check with inline flags
  f2fs: fix to reset i_gc_failures correctly
  f2fs: fix invalid memory access
  f2fs: fix to avoid broken of dnode block list
  f2fs: use true and false for boolean values
  f2fs: fix to do sanity check with cp_pack_start_sum
  f2fs: avoid f2fs_bug_on() in cp_error case
  f2fs: fix to clear PG_checked flag in set_page_dirty()
  f2fs: fix to active page in lru list for read path
  f2fs: don't keep meta pages used for block migration
  f2fs: fix to restrict mount condition when without CONFIG_QUOTA
  f2fs: quota: do not mount as RDWR without QUOTA if quota feature enabled
  f2fs: quota: fix incorrect comments
  f2fs: add proc entry to show victim_secmap bitmap
  f2fs: let checkpoint flush dnode page of regular
  f2fs: issue discard align to section in LFS mode
  f2fs: don't allow any writes on aborted atomic writes
  f2fs: restrict setting up inode.i_advise
  f2fs: fix wrong kernel message when recover fsync data on ro fs
  f2fs: clean up ioctl interface naming
  f2fs: clean up with f2fs_is_{atomic,volatile}_file()
  f2fs: clean up with f2fs_encrypted_inode()
  f2fs: clean up with get_current_nat_page
  f2fs: kill EXT_TREE_VEC_SIZE
  f2fs: avoid duplicated permission check for "trusted." xattrs
  f2fs: fix to propagate error from __get_meta_page()
  f2fs: fix to do sanity check with i_extra_isize
  f2fs: blk_finish_plug of submit_bio in lfs mode
  f2fs: do not set free of current section
  f2fs: Keep alloc_valid_block_count in sync
  f2fs: issue small discard by LBA order
  f2fs: stop issuing discard immediately if there is queued IO
  f2fs: clean up with IS_INODE()
  f2fs: detect bug_on in f2fs_wait_discard_bios
  f2fs: fix defined but not used build warnings
  f2fs: enable real-time discard by default
  f2fs: fix to detect looped node chain correctly
  f2fs: fix to do sanity check with block address in main area
  f2fs: fix to skip GC if type in SSA and SIT is inconsistent
  f2fs: try grabbing node page lock aggressively in sync scenario
  f2fs: show the fsync_mode=nobarrier mount option
  f2fs: check the right return value of memory alloc function
  f2fs: Replace strncpy with memcpy
  f2fs: avoid the global name 'fault_name'
  f2fs: fix to do sanity check with reserved blkaddr of inline inode
  f2fs: fix to do sanity check with node footer and iblocks
  f2fs: Allocate and stat mem used by free nid bitmap more accurately
  f2fs: fix to do sanity check with user_block_count
  f2fs: fix to do sanity check with extra_attr feature
  f2fs: fix to correct return value of f2fs_trim_fs
  f2fs: fix to do sanity check with {sit,nat}_ver_bitmap_bytesize
  f2fs: fix to do sanity check with secs_per_zone
  f2fs: disable f2fs_check_rb_tree_consistence
  f2fs: introduce and spread verify_blkaddr
  f2fs: use timespec64 for inode timestamps
  f2fs: fix to wait on page writeback before updating page
  f2fs: assign REQ_RAHEAD to bio for ->readpages
  f2fs: fix a hungtask problem caused by congestion_wait
  f2fs: Fix uninitialized return in f2fs_ioc_shutdown()
  f2fs: don't issue discard commands in online discard is on
  f2fs: fix to propagate return value of scan_nat_page()
  f2fs: support in-memory inode checksum when checking consistency
  f2fs: fix error path of fill_super
  f2fs: relocate readdir_ra configure initialization
  f2fs: move s_res{u,g}id initialization to default_options()
  f2fs: don't acquire orphan ino during recovery
  f2fs: avoid potential deadlock in f2fs_sbi_store
  f2fs: indicate shutdown f2fs to allow unmount successfully
  f2fs: keep meta pages in cp_error state
  f2fs: do checkpoint in kill_sb
  f2fs: allow wrong configured dio to buffered write
  f2fs: flush journal nat entries for nat_bits during unmount
  BACKPORT: arm64/vdso: Fix nsec handling for CLOCK_MONOTONIC_RAW
  ANDROID: arm64: mm: fix 4.4.154 merge
  BACKPORT: zram: drop max_zpage_size and use zs_huge_class_size()
  BACKPORT: zsmalloc: introduce zs_huge_class_size()
  ANDROID: tracing: fix race condition reading saved tgids
  ANDROID: x86_64_cuttlefish_defconfig: Enable lz4 compression for zram
  UPSTREAM: drivers/block/zram/zram_drv.c: fix bug storing backing_dev
  BACKPORT: zram: introduce zram memory tracking
  BACKPORT: zram: record accessed second
  BACKPORT: zram: mark incompressible page as ZRAM_HUGE
  UPSTREAM: zram: correct flag name of ZRAM_ACCESS
  UPSTREAM: zram: Delete gendisk before cleaning up the request queue
  UPSTREAM: drivers/block/zram/zram_drv.c: make zram_page_end_io() static
  BACKPORT: zram: set BDI_CAP_STABLE_WRITES once
  UPSTREAM: zram: fix null dereference of handle
  UPSTREAM: zram: add config and doc file for writeback feature
  BACKPORT: zram: read page from backing device
  BACKPORT: zram: write incompressible pages to backing device
  BACKPORT: zram: identify asynchronous IO's return value
  BACKPORT: zram: add free space management in backing device
  UPSTREAM: zram: add interface to specif backing device
  UPSTREAM: zram: rename zram_decompress_page to __zram_bvec_read
  UPSTREAM: zram: inline zram_compress
  UPSTREAM: zram: clean up duplicated codes in __zram_bvec_write
  ANDROID: x86_64_cuttlefish_defconfig: Enable zram and zstd
  BACKPORT: crypto: zstd - Add zstd support
  UPSTREAM: zram: add zstd to the supported algorithms list
  UPSTREAM: lib: Add zstd modules
  UPSTREAM: lib: Add xxhash module
  UPSTREAM: zram: rework copy of compressor name in comp_algorithm_store()
  UPSTREAM: zram: constify attribute_group structures.
  UPSTREAM: zram: count same page write as page_stored
  UPSTREAM: zram: reduce load operation in page_same_filled
  UPSTREAM: zram: use zram_free_page instead of open-coded
  UPSTREAM: zram: introduce zram data accessor
  UPSTREAM: zram: remove zram_meta structure
  UPSTREAM: zram: use zram_slot_lock instead of raw bit_spin_lock op
  BACKPORT: zram: partial IO refactoring
  BACKPORT: zram: handle multiple pages attached bio's bvec
  UPSTREAM: zram: fix operator precedence to get offset
  BACKPORT: zram: extend zero pages to same element pages
  BACKPORT: zram: remove waitqueue for IO done
  UPSTREAM: zram: remove obsolete sysfs attrs
  UPSTREAM: zram: support BDI_CAP_STABLE_WRITES
  UPSTREAM: zram: revalidate disk under init_lock
  BACKPORT: mm: support anonymous stable page
  UPSTREAM: zram: use __GFP_MOVABLE for memory allocation
  UPSTREAM: zram: drop gfp_t from zcomp_strm_alloc()
  UPSTREAM: zram: add more compression algorithms
  UPSTREAM: zram: delete custom lzo/lz4
  UPSTREAM: zram: cosmetic: cleanup documentation
  UPSTREAM: zram: use crypto api to check alg availability
  BACKPORT: zram: switch to crypto compress API
  UPSTREAM: zram: rename zstrm find-release functions
  UPSTREAM: zram: introduce per-device debug_stat sysfs node
  UPSTREAM: zram: remove max_comp_streams internals
  UPSTREAM: zram: user per-cpu compression streams
  BACKPORT: zsmalloc: require GFP in zs_malloc()
  UPSTREAM: zram/zcomp: do not zero out zcomp private pages
  UPSTREAM: zram: pass gfp from zcomp frontend to backend
  UPSTREAM: socket: close race condition between sock_close() and sockfs_setattr()
  ANDROID: Refresh x86_64_cuttlefish_defconfig
  kernel/sys.c: fix merge error with 4.4.144
  ANDROID: sdcardfs: Check stacked filesystem depth
  Fix backport of "tcp: detect malicious patterns in tcp_collapse_ofo_queue()"
  tcp: detect malicious patterns in tcp_collapse_ofo_queue()
  tcp: avoid collapses in tcp_prune_queue() if possible
  treewide: Use array_size in f2fs_kvzalloc()
  treewide: Use array_size() in f2fs_kzalloc()
  treewide: Use array_size() in f2fs_kmalloc()
  overflow.h: Add allocation size calculation helpers
  f2fs: fix to clear FI_VOLATILE_FILE correctly
  f2fs: let sync node IO interrupt async one
  f2fs: don't change wbc->sync_mode
  f2fs: fix to update mtime correctly
  fs: f2fs: insert space around that ':' and ', '
  fs: f2fs: add missing blank lines after declarations
  fs: f2fs: changed variable type of offset "unsigned" to "loff_t"
  f2fs: clean up symbol namespace
  f2fs: make set_de_type() static
  f2fs: make __f2fs_write_data_pages() static
  f2fs: fix to avoid accessing cross the boundary
  f2fs: fix to let caller retry allocating block address
  disable loading f2fs module on PAGE_SIZE > 4KB
  f2fs: fix error path of move_data_page
  f2fs: don't drop dentry pages after fs shutdown
  f2fs: fix to avoid race during access gc_thread pointer
  f2fs: clean up with clear_radix_tree_dirty_tag
  f2fs: fix to don't trigger writeback during recovery
  f2fs: clear discard_wake earlier
  f2fs: let discard thread wait a little longer if dev is busy
  f2fs: avoid stucking GC due to atomic write
  f2fs: introduce sbi->gc_mode to determine the policy
  f2fs: keep migration IO order in LFS mode
  f2fs: fix to wait page writeback during revoking atomic write
  f2fs: Fix deadlock in shutdown ioctl
  f2fs: detect synchronous writeback more earlier
  mm: remove nr_pages argument from pagevec_lookup_{,range}_tag()
  ceph: use pagevec_lookup_range_nr_tag()
  mm: add variant of pagevec_lookup_range_tag() taking number of pages
  mm: use pagevec_lookup_range_tag() in write_cache_pages()
  mm: use pagevec_lookup_range_tag() in __filemap_fdatawait_range()
  nilfs2: use pagevec_lookup_range_tag()
  gfs2: use pagevec_lookup_range_tag()
  f2fs: use find_get_pages_tag() for looking up single page
  f2fs: simplify page iteration loops
  f2fs: use pagevec_lookup_range_tag()
  ext4: use pagevec_lookup_range_tag()
  ceph: use pagevec_lookup_range_tag()
  btrfs: use pagevec_lookup_range_tag()
  mm: implement find_get_pages_range_tag()
  f2fs: clean up with is_valid_blkaddr()
  f2fs: fix to initialize min_mtime with ULLONG_MAX
  f2fs: fix to let checkpoint guarantee atomic page persistence
  f2fs: fix to initialize i_current_depth according to inode type
  Revert "f2fs: add ovp valid_blocks check for bg gc victim to fg_gc"
  f2fs: don't drop any page on f2fs_cp_error() case
  f2fs: fix spelling mistake: "extenstion" -> "extension"
  f2fs: enhance sanity_check_raw_super() to avoid potential overflows
  f2fs: treat volatile file's data as hot one
  f2fs: introduce release_discard_addr() for cleanup
  f2fs: fix potential overflow
  f2fs: rename dio_rwsem to i_gc_rwsem
  f2fs: move mnt_want_write_file after range check
  f2fs: fix missing clear FI_NO_PREALLOC in some error case
  f2fs: enforce fsync_mode=strict for renamed directory
  f2fs: sanity check for total valid node blocks
  f2fs: sanity check on sit entry
  f2fs: avoid bug_on on corrupted inode
  f2fs: give message and set need_fsck given broken node id
  f2fs: clean up commit_inmem_pages()
  f2fs: do not check F2FS_INLINE_DOTS in recover
  f2fs: remove duplicated dquot_initialize and fix error handling
  f2fs: stop issue discard if something wrong with f2fs
  f2fs: fix return value in f2fs_ioc_commit_atomic_write
  f2fs: allocate hot_data for atomic write more strictly
  f2fs: check if inmem_pages list is empty correctly
  f2fs: fix race in between GC and atomic open
  f2fs: change le32 to le16 of f2fs_inode->i_extra_size
  f2fs: check cur_valid_map_mir & raw_sit block count when flush sit entries
  f2fs: correct return value of f2fs_trim_fs
  f2fs: fix to show missing bits in FS_IOC_GETFLAGS
  f2fs: remove unneeded F2FS_PROJINHERIT_FL
  f2fs: don't use GFP_ZERO for page caches
  f2fs: issue all big range discards in umount process
  f2fs: remove redundant block plug
  f2fs: remove unmatched zero_user_segment when convert inline dentry
  f2fs: introduce private inode status mapping
  fscrypt: log the crypto algorithm implementations
  crypto: api - Add crypto_type_has_alg helper
  crypto: skcipher - Add low-level skcipher interface
  crypto: skcipher - Add helper to retrieve driver name
  crypto: skcipher - Add default key size helper
  fscrypt: add Speck128/256 support
  fscrypt: only derive the needed portion of the key
  fscrypt: separate key lookup from key derivation
  fscrypt: use a common logging function
  fscrypt: remove internal key size constants
  fscrypt: remove unnecessary check for non-logon key type
  fscrypt: make fscrypt_operations.max_namelen an integer
  fscrypt: drop empty name check from fname_decrypt()
  fscrypt: drop max_namelen check from fname_decrypt()
  fscrypt: don't special-case EOPNOTSUPP from fscrypt_get_encryption_info()
  fscrypt: don't clear flags on crypto transform
  fscrypt: remove stale comment from fscrypt_d_revalidate()
  fscrypt: remove error messages for skcipher_request_alloc() failure
  fscrypt: remove unnecessary NULL check when allocating skcipher
  fscrypt: clean up after fscrypt_prepare_lookup() conversions
  fscrypt: use unbound workqueue for decryption
  f2fs: run fstrim asynchronously if runtime discard is on
  f2fs: turn down IO priority of discard from background
  f2fs: don't split checkpoint in fstrim
  f2fs: issue discard commands proactively in high fs utilization
  f2fs: add fsync_mode=nobarrier for non-atomic files
  f2fs: let fstrim issue discard commands in lower priority
  f2fs: avoid fsync() failure caused by EAGAIN in writepage()
  f2fs: clear PageError on writepage - part 2
  f2fs: check cap_resource only for data blocks
  Revert "f2fs: introduce f2fs_set_page_dirty_nobuffer"
  f2fs: clear PageError on writepage
  f2fs: call unlock_new_inode() before d_instantiate()
  f2fs: refactor read path to allow multiple postprocessing steps
  fscrypt: allow synchronous bio decryption
  f2fs: remain written times to update inode during fsync
  f2fs: make assignment of t->dentry_bitmap more readable
  f2fs: truncate preallocated blocks in error case
  f2fs: fix a wrong condition in f2fs_skip_inode_update
  f2fs: reserve bits for fs-verity
  f2fs: Add a segment type check in inplace write
  f2fs: no need to initialize zero value for GFP_F2FS_ZERO
  f2fs: don't track new nat entry in nat set
  f2fs: clean up with F2FS_BLK_ALIGN
  f2fs: check blkaddr more accuratly before issue a bio
  f2fs: Set GF_NOFS in read_cache_page_gfp while doing f2fs_quota_read
  f2fs: introduce a new mount option test_dummy_encryption
  f2fs: introduce F2FS_FEATURE_LOST_FOUND feature
  f2fs: release locks before return in f2fs_ioc_gc_range()
  f2fs: align memory boundary for bitops
  f2fs: remove unneeded set_cold_node()
  f2fs: add nowait aio support
  f2fs: wrap all options with f2fs_sb_info.mount_opt
  f2fs: Don't overwrite all types of node to keep node chain
  f2fs: introduce mount option for fsync mode
  f2fs: fix to restore old mount option in ->remount_fs
  f2fs: wrap sb_rdonly with f2fs_readonly
  f2fs: avoid selinux denial on CAP_SYS_RESOURCE
  f2fs: support hot file extension
  f2fs: fix to avoid race in between atomic write and background GC
  f2fs: do gc in greedy mode for whole range if gc_urgent mode is set
  f2fs: issue discard aggressively in the gc_urgent mode
  f2fs: set readdir_ra by default
  f2fs: add auto tuning for small devices
  f2fs: add mount option for segment allocation policy
  f2fs: don't stop GC if GC is contended
  f2fs: expose extension_list sysfs entry
  f2fs: fix to set KEEP_SIZE bit in f2fs_zero_range
  f2fs: introduce sb_lock to make encrypt pwsalt update exclusive
  f2fs: remove redundant initialization of pointer 'p'
  f2fs: flush cp pack except cp pack 2 page at first
  f2fs: clean up f2fs_sb_has_xxx functions
  f2fs: remove redundant check of page type when submit bio
  f2fs: fix to handle looped node chain during recovery
  f2fs: handle quota for orphan inodes
  f2fs: support passing down write hints to block layer with F2FS policy
  f2fs: support passing down write hints given by users to block layer
  f2fs: fix to clear CP_TRIMMED_FLAG
  f2fs: support large nat bitmap
  f2fs: fix to check extent cache in f2fs_drop_extent_tree
  f2fs: restrict inline_xattr_size configuration
  f2fs: fix heap mode to reset it back
  f2fs: fix potential corruption in area before F2FS_SUPER_OFFSET
  fscrypt: fix build with pre-4.6 gcc versions
  fscrypt: fix up fscrypt_fname_encrypted_size() for internal use
  fscrypt: define fscrypt_fname_alloc_buffer() to be for presented names
  fscrypt: calculate NUL-padding length in one place only
  fscrypt: move fscrypt_symlink_data to fscrypt_private.h
  fscrypt: remove fscrypt_fname_usr_to_disk()
  f2fs: switch to fscrypt_get_symlink()
  f2fs: switch to fscrypt ->symlink() helper functions
  fscrypt: new helper function - fscrypt_get_symlink()
  fscrypt: new helper functions for ->symlink()
  fscrypt: trim down fscrypt.h includes
  fscrypt: move fscrypt_is_dot_dotdot() to fs/crypto/fname.c
  fscrypt: move fscrypt_valid_enc_modes() to fscrypt_private.h
  fscrypt: move fscrypt_operations declaration to fscrypt_supp.h
  fscrypt: split fscrypt_dummy_context_enabled() into supp/notsupp versions
  fscrypt: move fscrypt_ctx declaration to fscrypt_supp.h
  fscrypt: move fscrypt_info_cachep declaration to fscrypt_private.h
  fscrypt: move fscrypt_control_page() to supp/notsupp headers
  fscrypt: move fscrypt_has_encryption_key() to supp/notsupp headers
  f2fs: don't put dentry page in pagecache into highmem
  f2fs: support inode creation time
  f2fs: rebuild sit page from sit info in mem
  f2fs: stop issuing discard if fs is readonly
  f2fs: clean up duplicated assignment in init_discard_policy
  f2fs: use GFP_F2FS_ZERO for cleanup
  f2fs: allow to recover node blocks given updated checkpoint
  f2fs: recover some i_inline flags
  f2fs: correct removexattr behavior for null valued extended attribute
  f2fs: drop page cache after fs shutdown
  f2fs: stop gc/discard thread after fs shutdown
  f2fs: hanlde error case in f2fs_ioc_shutdown
  f2fs: split need_inplace_update
  f2fs: fix to update last_disk_size correctly
  f2fs: kill F2FS_INLINE_XATTR_ADDRS for cleanup
  f2fs: clean up error path of fill_super
  f2fs: avoid hungtask when GC encrypted block if io_bits is set
  f2fs: allow quota to use reserved blocks
  f2fs: fix to drop all inmem pages correctly
  f2fs: speed up defragment on sparse file
  f2fs: support F2FS_IOC_PRECACHE_EXTENTS
  f2fs: add an ioctl to disable GC for specific file
  f2fs: prevent newly created inode from being dirtied incorrectly
  f2fs: support FIEMAP_FLAG_XATTR
  f2fs: fix to cover f2fs_inline_data_fiemap with inode_lock
  f2fs: check node page again in write end io
  f2fs: fix to caclulate required free section correctly
  f2fs: handle newly created page when revoking inmem pages
  f2fs: add resgid and resuid to reserve root blocks
  f2fs: implement cgroup writeback support
  f2fs: remove unused pend_list_tag
  f2fs: avoid high cpu usage in discard thread
  f2fs: make local functions static
  f2fs: add reserved blocks for root user
  f2fs: check segment type in __f2fs_replace_block
  f2fs: update inode info to inode page for new file
  f2fs: show precise # of blocks that user/root can use
  f2fs: clean up unneeded declaration
  f2fs: continue to do direct IO if we only preallocate partial blocks
  f2fs: enable quota at remount from r to w
  f2fs: skip stop_checkpoint for user data writes
  f2fs: fix missing error number for xattr operation
  f2fs: recover directory operations by fsync
  f2fs: return error during fill_super
  f2fs: fix an error case of missing update inode page
  f2fs: fix potential hangtask in f2fs_trace_pid
  f2fs: no need return value in restore summary process
  f2fs: use unlikely for release case
  f2fs: don't return value in truncate_data_blocks_range
  f2fs: clean up f2fs_map_blocks
  f2fs: clean up hash codes
  f2fs: fix error handling in fill_super
  f2fs: spread f2fs_k{m,z}alloc
  f2fs: inject fault to kvmalloc
  f2fs: inject fault to kzalloc
  f2fs: remove a redundant conditional expression
  f2fs: apply write hints to select the type of segment for direct write
  f2fs: switch to fscrypt_prepare_setattr()
  f2fs: switch to fscrypt_prepare_lookup()
  f2fs: switch to fscrypt_prepare_rename()
  f2fs: switch to fscrypt_prepare_link()
  f2fs: switch to fscrypt_file_open()
  f2fs: remove repeated f2fs_bug_on
  f2fs: remove an excess variable
  f2fs: fix lock dependency in between dio_rwsem & i_mmap_sem
  f2fs: remove unused parameter
  f2fs: still write data if preallocate only partial blocks
  f2fs: introduce sysfs readdir_ra to readahead inode block in readdir
  f2fs: fix concurrent problem for updating free bitmap
  f2fs: remove unneeded memory footprint accounting
  f2fs: no need to read nat block if nat_block_bitmap is set
  f2fs: reserve nid resource for quota sysfile
  fscrypt: resolve some cherry-pick bugs
  fscrypt: move to generic async completion
  crypto: introduce crypto wait for async op
  fscrypt: lock mutex before checking for bounce page pool
  fscrypt: new helper function - fscrypt_prepare_setattr()
  fscrypt: new helper function - fscrypt_prepare_lookup()
  fscrypt: new helper function - fscrypt_prepare_rename()
  fscrypt: new helper function - fscrypt_prepare_link()
  fscrypt: new helper function - fscrypt_file_open()
  fscrypt: new helper function - fscrypt_require_key()
  fscrypt: remove unneeded empty fscrypt_operations structs
  fscrypt: remove ->is_encrypted()
  fscrypt: switch from ->is_encrypted() to IS_ENCRYPTED()
  fs, fscrypt: add an S_ENCRYPTED inode flag
  fscrypt: clean up include file mess
  fscrypt: fix dereference of NULL user_key_payload
  fscrypt: make ->dummy_context() return bool
  f2fs: deny accessing encryption policy if encryption is off
  f2fs: inject fault in inc_valid_node_count
  f2fs: fix to clear FI_NO_PREALLOC
  f2fs: expose quota information in debugfs
  f2fs: separate nat entry mem alloc from nat_tree_lock
  f2fs: validate before set/clear free nat bitmap
  f2fs: avoid opened loop codes in __add_ino_entry
  f2fs: apply write hints to select the type of segments for buffered write
  f2fs: introduce scan_curseg_cache for cleanup
  f2fs: optimize the way of traversing free_nid_bitmap
  f2fs: keep scanning until enough free nids are acquired
  f2fs: trace checkpoint reason in fsync()
  f2fs: keep isize once block is reserved cross EOF
  f2fs: avoid race in between GC and block exchange
  f2fs: save a multiplication for last_nid calculation
  f2fs: fix summary info corruption
  f2fs: remove dead code in update_meta_page
  f2fs: remove unneeded semicolon
  f2fs: don't bother with inode->i_version
  f2fs: check curseg space before foreground GC
  f2fs: use rw_semaphore to protect SIT cache
  f2fs: support quota sys files
  f2fs: add quota_ino feature infra
  f2fs: optimize __update_nat_bits
  f2fs: modify for accurate fggc node io stat
  Revert "f2fs: handle dirty segments inside refresh_sit_entry"
  f2fs: add a function to move nid
  f2fs: export SSR allocation threshold
  f2fs: give correct trimmed blocks in fstrim
  f2fs: support bio allocation error injection
  f2fs: support get_page error injection
  f2fs: add missing sysfs description
  f2fs: support soft block reservation
  f2fs: handle error case when adding xattr entry
  f2fs: support flexible inline xattr size
  f2fs: show current cp state
  f2fs: add missing quota_initialize
  f2fs: show # of dirty segments via sysfs
  f2fs: stop all the operations by cp_error flag
  f2fs: remove several redundant assignments
  f2fs: avoid using timespec
  f2fs: fix to correct no_fggc_candidate
  Revert "f2fs: return wrong error number on f2fs_quota_write"
  f2fs: remove obsolete pointer for truncate_xattr_node
  f2fs: retry ENOMEM for quota_read|write
  f2fs: limit # of inmemory pages
  f2fs: update ctx->pos correctly when hitting hole in directory
  f2fs: relocate readahead codes in readdir()
  f2fs: allow readdir() to be interrupted
  f2fs: trace f2fs_readdir
  f2fs: trace f2fs_lookup
  f2fs: skip searching non-exist range in truncate_hole
  f2fs: expose some sectors to user in inline data or dentry case
  f2fs: avoid stale fi->gdirty_list pointer
  f2fs/crypto: drop crypto key at evict_inode only
  f2fs: fix to avoid race when accessing last_disk_size
  f2fs: Fix bool initialization/comparison
  f2fs: give up CP_TRIMMED_FLAG if it drops discards
  f2fs: trace f2fs_remove_discard
  f2fs: reduce cmd_lock coverage in __issue_discard_cmd
  f2fs: split discard policy
  f2fs: wrap discard policy
  f2fs: support issuing/waiting discard in range
  f2fs: fix to flush multiple device in checkpoint
  f2fs: enhance multiple device flush
  f2fs: fix to show ino management cache size correctly
  f2fs: drop FI_UPDATE_WRITE tag after f2fs_issue_flush
  f2fs: obsolete ALLOC_NID_LIST list
  f2fs: convert inline data for direct I/O & FI_NO_PREALLOC
  f2fs: allow readpages with NULL file pointer
  f2fs: show flush list status in sysfs
  f2fs: introduce read_xattr_block
  f2fs: introduce read_inline_xattr
  Revert "f2fs: reuse nids more aggressively"
  Revert "f2fs: node segment is prior to data segment selected victim"
  f2fs: fix potential panic during fstrim
  f2fs: hurry up to issue discard after io interruption
  f2fs: fix to show correct discard_granularity in sysfs
  f2fs: detect dirty inode in evict_inode
  f2fs: clear radix tree dirty tag of pages whose dirty flag is cleared
  f2fs: speed up gc_urgent mode with SSR
  f2fs: better to wait for fstrim completion
  f2fs: avoid race in between read xattr & write xattr
  f2fs: make get_lock_data_page to handle encrypted inode
  f2fs: use generic terms used for encrypted block management
  f2fs: introduce f2fs_encrypted_file for clean-up
  Revert "f2fs: add a new function get_ssr_cost"
  f2fs: constify super_operations
  f2fs: fix to wake up all sleeping flusher
  f2fs: avoid race in between atomic_read & atomic_inc
  f2fs: remove unneeded parameter of change_curseg
  f2fs: update i_flags correctly
  f2fs: don't check inode's checksum if it was dirtied or writebacked
  f2fs: don't need to update inode checksum for recovery
  f2fs: trigger fdatasync for non-atomic_write file
  f2fs: fix to avoid race in between aio and gc
  f2fs: wake up discard_thread iff there is a candidate
  f2fs: return error when accessing insane flie offset
  f2fs: trigger normal fsync for non-atomic_write file
  f2fs: clear FI_HOT_DATA correctly
  f2fs: fix out-of-order execution in f2fs_issue_flush
  f2fs: issue discard commands if gc_urgent is set
  f2fs: introduce discard_granularity sysfs entry
  f2fs: remove unused function overprovision_sections
  f2fs: check hot_data for roll-forward recovery
  f2fs: add tracepoint for f2fs_gc
  f2fs: retry to revoke atomic commit in -ENOMEM case
  f2fs: let fill_super handle roll-forward errors
  f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO]
  f2fs: support journalled quota
  f2fs: fix potential overflow when adjusting GC cycle
  f2fs: avoid unneeded sync on quota file
  f2fs: introduce gc_urgent mode for background GC
  f2fs: use IPU for cold files
  f2fs: fix the size value in __check_sit_bitmap
  f2fs: add app/fs io stat
  f2fs: do not change the valid_block value if cur_valid_map was wrongly set or cleared
  f2fs: update cur_valid_map_mir together with cur_valid_map
  f2fs: use printk_ratelimited for f2fs_msg
  f2fs: expose features to sysfs entry
  f2fs: support inode checksum
  f2fs: return wrong error number on f2fs_quota_write
  f2fs: provide f2fs_balance_fs to __write_node_page
  f2fs: introduce f2fs_statfs_project
  f2fs: don't need to wait for node writes for atomic write
  f2fs: avoid naming confusion of sysfs init
  f2fs: support project quota
  f2fs: record quota during dot{,dot} recovery
  f2fs: enhance on-disk inode structure scalability
  f2fs: make max inline size changeable
  f2fs: add ioctl to expose current features
  f2fs: make background threads of f2fs being aware of freezing
  f2fs: don't give partially written atomic data from process crash
  f2fs: give a try to do atomic write in -ENOMEM case
  f2fs: preserve i_mode if __f2fs_set_acl() fails
  f2fs: alloc new nids for xattr block in recovery
  f2fs: spread struct f2fs_dentry_ptr for inline path
  f2fs: remove unused input parameter
  f2fs: avoid cpu lockup
  f2fs: include seq_file.h for sysfs.c
  f2fs: Don't clear SGID when inheriting ACLs
  f2fs: remove extra inode_unlock() in error path
  fscrypt: add support for AES-128-CBC
  fscrypt: inline fscrypt_free_filename()
  f2fs: make more close to v4.13-rc1
  f2fs: support plain user/group quota
  f2fs: avoid deadlock caused by lock order of page and lock_op
  f2fs: use spin_{,un}lock_irq{save,restore}
  f2fs: relax migratepage for atomic written page
  f2fs: don't count inode block in in-memory inode.i_blocks
  Revert "f2fs: fix to clean previous mount option when remount_fs"
  f2fs: do not set LOST_PINO for renamed dir
  f2fs: do not set LOST_PINO for newly created dir
  f2fs: skip ->writepages for {mete,node}_inode during recovery
  f2fs: introduce __check_sit_bitmap
  f2fs: stop gc/discard thread in prior during umount
  f2fs: introduce reserved_blocks in sysfs
  f2fs: avoid redundant f2fs_flush after remount
  f2fs: report # of free inodes more precisely
  f2fs: add ioctl to do gc with target block address
  f2fs: don't need to check encrypted inode for partial truncation
  f2fs: measure inode.i_blocks as generic filesystem
  f2fs: set CP_TRIMMED_FLAG correctly
  f2fs: require key for truncate(2) of encrypted file
  f2fs: move sysfs code from super.c to fs/f2fs/sysfs.c
  f2fs: clean up sysfs codes
  f2fs: fix wrong error number of fill_super
  f2fs: fix to show injection rate in ->show_options
  f2fs: Fix a return value in case of error in 'f2fs_fill_super'
  f2fs: use proper variable name
  f2fs: fix to avoid panic when encountering corrupt node
  f2fs: don't track newly allocated nat entry in list
  f2fs: add f2fs_bug_on in __remove_discard_cmd
  f2fs: introduce __wait_one_discard_bio
  f2fs: dax: fix races between page faults and truncating pages
  f2fs: simplify the way of calulating next nat address
  f2fs: sanity check size of nat and sit cache
  f2fs: fix a panic caused by NULL flush_cmd_control
  f2fs: remove the unnecessary cast for PTR_ERR
  f2fs: remove false-positive bug_on
  f2fs: Do not issue small discards in LFS mode
  f2fs: don't bother checking for encryption key in ->write_iter()
  f2fs: don't bother checking for encryption key in ->mmap()
  f2fs: wait discard IO completion without cmd_lock held
  f2fs: wake up all waiters in f2fs_submit_discard_endio
  f2fs: show more info if fail to issue discard
  f2fs: introduce io_list for serialize data/node IOs
  f2fs: split wio_mutex
  f2fs: combine huge num of discard rb tree consistence checks
  f2fs: fix a bug caused by NULL extent tree
  f2fs: try to freeze in gc and discard threads
  f2fs: add a new function get_ssr_cost
  f2fs: declare load_free_nid_bitmap static
  f2fs: avoid f2fs_lock_op for IPU writes
  f2fs: split bio cache
  f2fs: use fio instead of multiple parameters
  f2fs: remove unnecessary read cases in merged IO flow
  f2fs: use f2fs_submit_page_bio for ra_meta_pages
  f2fs: make sure f2fs_gc returns consistent errno
  f2fs: load inode's flag from disk
  f2fs: sanity check checkpoint segno and blkoff
  f2fs, block_dump: give WRITE direction to submit_bio
  fscrypt: correct collision claim for digested names
  f2fs: switch to using fscrypt_match_name()
  fscrypt: introduce helper function for filename matching
  fscrypt: fix context consistency check when key(s) unavailable
  fscrypt: Move key structure and constants to uapi
  fscrypt: remove fscrypt_symlink_data_len()
  fscrypt: remove unnecessary checks for NULL operations
  fscrypt: eliminate ->prepare_context() operation
  fscrypt: remove broken support for detecting keyring key revocation
  fscrypt: avoid collisions when presenting long encrypted filenames
  f2fs: check entire encrypted bigname when finding a dentry
  f2fs: sync f2fs_lookup() with ext4_lookup()
  f2fs: fix a mount fail for wrong next_scan_nid
  f2fs: relocate inode_{,un}lock in F2FS_IOC_SETFLAGS
  f2fs: show available_nids in f2fs/status
  f2fs: flush dirty nats periodically
  f2fs: introduce CP_TRIMMED_FLAG to avoid unneeded discard
  f2fs: allow cpc->reason to indicate more than one reason
  f2fs: release cp and dnode lock before IPU
  f2fs: shrink size of struct discard_cmd
  f2fs: don't hold cmd_lock during waiting discard command
  f2fs: nullify fio->encrypted_page for each writes
  f2fs: sanity check segment count
  f2fs: introduce valid_ipu_blkaddr to clean up
  f2fs: lookup extent cache first under IPU scenario
  f2fs: reconstruct code to write a data page
  f2fs: introduce __wait_discard_cmd
  f2fs: introduce __issue_discard_cmd
  f2fs: enable small discard by default
  f2fs: delay awaking discard thread
  f2fs: seperate read nat page from nat_tree_lock
  f2fs: fix multiple f2fs_add_link() having same name for inline dentry
  f2fs: skip encrypted inode in ASYNC IPU policy
  f2fs: fix out-of free segments
  f2fs: improve definition of statistic macros
  f2fs: assign allocation hint for warm/cold data
  f2fs: fix _IOW usage
  f2fs: add ioctl to flush data from faster device to cold area
  f2fs: introduce async IPU policy
  f2fs: add undiscard blocks stat
  f2fs: unlock cp_rwsem early for IPU writes
  f2fs: introduce __check_rb_tree_consistence
  f2fs: trace __submit_discard_cmd
  f2fs: in prior to issue big discard
  f2fs: clean up discard_cmd_control structure
  f2fs: use rb-tree to track pending discard commands
  f2fs: avoid dirty node pages in check_only recovery
  f2fs: fix not to set fsync/dentry mark
  f2fs: allocate hot_data for atomic writes
  f2fs: give time to flush dirty pages for checkpoint
  f2fs: fix fs corruption due to zero inode page
  f2fs: shrink blk plug region
  f2fs: extract rb-tree operation infrastructure
  f2fs: avoid frequent checkpoint during f2fs_gc
  f2fs: clean up some macros in terms of GET_SEGNO
  f2fs: clean up get_valid_blocks with consistent parameter
  f2fs: use segment number for get_valid_blocks
  f2fs: guard macro variables with braces
  f2fs: fix comment on f2fs_flush_merged_bios() after 86531d6b
  f2fs: prevent waiter encountering incorrect discard states
  f2fs: introduce f2fs_wait_discard_bios
  f2fs: split discard_cmd_list
  Revert "f2fs: put allocate_segment after refresh_sit_entry"
  f2fs: split make_dentry_ptr() into block and inline versions
  f2fs: submit bio of in-place-update pages
  f2fs: remove the redundant variable definition
  f2fs: avoid IO split due to mixed WB_SYNC_ALL and WB_SYNC_NONE
  f2fs: write small sized IO to hot log
  f2fs: use bitmap in discard_entry
  f2fs: clean up destroy_discard_cmd_control
  f2fs: count discard command entry
  f2fs: show issued flush/discard count
  f2fs: relax node version check for victim data in gc
  f2fs: start SSR much eariler to avoid FG_GC
  f2fs: allocate node and hot data in the beginning of partition
  f2fs: fix wrong max cost initialization
  f2fs: allow write page cache when writting cp
  f2fs: don't reserve additional space in xattr block
  f2fs: clean up xattr operation
  f2fs: don't track volatile file in dirty inode list
  f2fs: show the max number of volatile operations
  f2fs: fix race condition in between free nid allocator/initializer
  f2fs: use set_page_private marcro in f2fs_trace_pid
  f2fs: fix recording invalid last_victim
  f2fs: more reasonable mem_size calculating of ino_entry
  f2fs: calculate the f2fs_stat_info into base_mem
  f2fs: avoid stat_inc_atomic_write for non-atomic file
  f2fs: sanity check of crc_offset from raw checkpoint
  f2fs: cleanup the disk level filename updating
  f2fs: cover update_free_nid_bitmap with nid_list_lock
  f2fs: fix bad prefetchw of NULL page
  f2fs: clear FI_DATA_EXIST flag in truncate_inline_inode
  f2fs: move mnt_want_write_file after arguments checking
  f2fs: check new size by inode_newsize_ok in f2fs_insert_range
  f2fs: avoid copy date to user-space if move file range fail
  f2fs: drop duplicate new_size assign in f2fs_zero_range
  f2fs: adjust the way of calculating nat block
  f2fs: add fault injection on f2fs_truncate
  f2fs: check range before defragment
  f2fs: use parameter max_items instead of PIDVEC_SIZE
  f2fs: add a punch discard command function
  f2fs: allocate a bio for discarding when actually issuing it
  f2fs: skip writeback meta pages if cp_mutex acquire failed
  f2fs: show more precise message on orphan recovery failure
  f2fs: remove dead macro PGOFS_OF_NEXT_DNODE
  f2fs: drop duplicate radix tree lookup of nat_entry_set
  f2fs: make sure trace all f2fs_issue_flush
  f2fs: don't allow volatile writes for non-regular file
  f2fs: don't allow atomic writes for not regular files
  f2fs: fix stale ATOMIC_WRITTEN_PAGE private pointer
  f2fs: build stat_info before orphan inode recovery
  f2fs: fix the fault of calculating blkstart twice
  f2fs: fix the fault of checking F2FS_LINK_MAX for rename inode
  f2fs: don't allow to get pino when filename is encrypted
  f2fs: fix wrong error injection for evict_inode
  f2fs: le32_to_cpu for ckpt->cp_pack_total_block_count
  f2fs: le16_to_cpu for xattr->e_value_size
  f2fs: don't need to invalidate wrong node page
  f2fs: fix an error return value in truncate_partial_data_page
  f2fs: combine nat_bits and free_nid_bitmap cache
  f2fs: skip scanning free nid bitmap of full NAT blocks
  f2fs: use __set{__clear}_bit_le
  f2fs: update_free_nid_bitmap() can be static
  f2fs: __update_nat_bits() can be static
  f2fs: le16_to_cpu for xattr->e_value_size
  f2fs: don't overwrite node block by SSR
  f2fs: don't need to invalidate wrong node page
  f2fs: fix an error return value in truncate_partial_data_page
  fscrypt: catch up to v4.11-rc1
  f2fs: avoid to flush nat journal entries
  f2fs: avoid to issue redundant discard commands
  f2fs: fix a plint compile warning
  f2fs: add f2fs_drop_inode tracepoint
  f2fs: Fix zoned block device support
  f2fs: remove redundant set_page_dirty()
  f2fs: fix to enlarge size of write_io_dummy mempool
  f2fs: fix memory leak of write_io_dummy mempool during umount
  f2fs: fix to update F2FS_{CP_}WB_DATA count correctly
  f2fs: use MAX_FREE_NIDS for the free nids target
  f2fs: introduce free nid bitmap
  f2fs: new helper cur_cp_crc() getting crc in f2fs_checkpoint
  f2fs: update the comment of default nr_pages to skipping
  f2fs: drop the duplicate pval in f2fs_getxattr
  f2fs: Don't update the xattr data that same as the exist
  f2fs: kill __is_extent_same
  f2fs: avoid bggc->fggc when enough free segments are avaliable after cp
  f2fs: select target segment with closer temperature in SSR mode
  f2fs: show simple call stack in fault injection message
  fscrypt: catch fscrypto_get_policy in v4.10-rc6
  f2fs: use __clear_bit_le
  f2fs: no need lock_op in f2fs_write_inline_data
  f2fs: add bitmaps for empty or full NAT blocks
  f2fs: replace rw semaphore extent_tree_lock with mutex lock
  f2fs: avoid m_flags overlay when allocating more data blocks
  f2fs: remove unsafe bitmap checking
  f2fs: init local extent_info to avoid stale stack info in tp
  f2fs: remove unnecessary condition check for write_checkpoint in f2fs_gc
  f2fs: do SSR for node segments more aggresively
  f2fs: check discard alignment only for SEQWRITE zones
  f2fs: wait for discard completion after submission
  f2fs: much larger batched trim_fs job
  f2fs: avoid very large discard command
  f2fs: find data segments across all the types
  f2fs: do SSR in higher priority
  f2fs: do SSR for data when there is enough free space
  f2fs: node segment is prior to data segment selected victim
  f2fs: put allocate_segment after refresh_sit_entry
  f2fs: add ovp valid_blocks check for bg gc victim to fg_gc
  f2fs: do not wait for writeback in write_begin
  f2fs: replace __get_victim by dirty_segments in FG_GC
  f2fs: fix multiple f2fs_add_link() calls having same name
  f2fs: show actual device info in tracepoints
  f2fs: use SSR for warm node as well
  f2fs: enable inline_xattr by default
  f2fs: introduce noinline_xattr mount option
  f2fs: avoid reading NAT page by get_node_info
  f2fs: remove build_free_nids() during checkpoint
  f2fs: change recovery policy of xattr node block
  f2fs: super: constify fscrypt_operations structure
  f2fs: show checkpoint version at mount time
  f2fs: remove preflush for nobarrier case
  f2fs: check last page index in cached bio to decide submission
  f2fs: check io submission more precisely
  f2fs: fix trim_fs assignment
  Revert "f2fs: remove batched discard in f2fs_trim_fs"
  f2fs: fix missing bio_alloc(1)
  f2fs: call internal __write_data_page directly
  f2fs: avoid out-of-order execution of atomic writes
  f2fs: move write_node_page above fsync_node_pages
  f2fs: move flush tracepoint
  f2fs: show # of APPEND and UPDATE inodes
  f2fs: fix 446 coding style warnings in f2fs.h
  f2fs: fix 3 coding style errors in f2fs.h
  f2fs: declare missing static function
  f2fs: show the fault injection mount option
  f2fs: fix null pointer dereference when issuing flush in ->fsync
  f2fs: fix to avoid overflow when left shifting page offset
  f2fs: enhance lookup xattr
  f2fs: fix a dead loop in f2fs_fiemap()
  f2fs: do not preallocate blocks which has wrong buffer
  f2fs: show # of on-going flush and discard bios
  f2fs: add a kernel thread to issue discard commands asynchronously
  f2fs: factor out discard command info into discard_cmd_control
  f2fs: remove batched discard in f2fs_trim_fs
  f2fs: reorganize stat information
  f2fs: clean up flush/discard command namings
  f2fs: check in-memory sit version bitmap
  f2fs: check in-memory nat version bitmap
  f2fs: check in-memory block bitmap
  f2fs: introduce FI_ATOMIC_COMMIT
  f2fs: clean up with list_{first, last}_entry
  f2fs: return fs_trim if there is no candidate
  f2fs: avoid needless checkpoint in f2fs_trim_fs
  f2fs: relax async discard commands more
  f2fs: drop exist_data for inline_data when truncated to 0
  f2fs: don't allow encrypted operations without keys
  f2fs: show the max number of atomic operations
  f2fs: get io size bit from mount option
  f2fs: support IO alignment for DATA and NODE writes
  f2fs: add submit_bio tracepoint
  f2fs: reassign new segment for mode=lfs
  f2fs: fix a missing discard prefree segments
  f2fs: use rb_entry_safe
  f2fs: add a case of no need to read a page in write begin
  f2fs: fix a problem of using memory after free
  f2fs: remove unneeded condition
  f2fs: don't cache nat entry if out of memory
  f2fs: remove unused values in recover_fsync_data
  f2fs: support async discard based on v4.9
  f2fs: resolve op and op_flags confilcts
  f2fs: remove wrong backported codes
  f2fs: fix a missing size change in f2fs_setattr
  fs/super.c: fix race between freeze_super() and thaw_super()
  scripts/tags.sh: catch 4.9-rc6
  f2fs: fix to access nullified flush_cmd_control pointer
  f2fs: free meta pages if sanity check for ckpt is failed
  f2fs: detect wrong layout
  f2fs: call sync_fs when f2fs is idle
  Revert "f2fs: use percpu_counter for # of dirty pages in inode"
  f2fs: return AOP_WRITEPAGE_ACTIVATE for writepage
  f2fs: do not activate auto_recovery for fallocated i_size
  f2fs: fix 32-bit build
  f2fs: set ->owner for debugfs status file's file_operations
  f2fs: fix incorrect free inode count in ->statfs
  f2fs: drop duplicate header timer.h
  f2fs: fix wrong AUTO_RECOVER condition
  f2fs: do not recover i_size if it's valid
  f2fs: fix fdatasync
  f2fs: fix to account total free nid correctly
  f2fs: fix an infinite loop when flush nodes in cp
  f2fs: don't wait writeback for datas during checkpoint
  f2fs: fix wrong written_valid_blocks counting
  f2fs: avoid BG_GC in f2fs_balance_fs
  f2fs: fix redundant block allocation
  f2fs: use err for f2fs_preallocate_blocks
  f2fs: support multiple devices
  f2fs: allow dio read for LFS mode
  f2fs: revert segment allocation for direct IO
  f2fs: return directly if block has been removed from the victim
  Revert "f2fs: do not recover from previous remained wrong dnodes"
  f2fs: remove checkpoint in f2fs_freeze
  f2fs: assign segments correctly for direct_io
  f2fs: fix wrong i_atime recovery
  f2fs: record inode updating status correctly
  f2fs: Trace reset zone events
  f2fs: Reset sequential zones on zoned block devices
  f2fs: Cache zoned block devices zone type
  f2fs: Do not allow adaptive mode for host-managed zoned block devices
  f2fs: Always enable discard for zoned blocks devices
  f2fs: Suppress discard warning message for zoned block devices
  f2fs: Check zoned block feature for host-managed zoned block devices
  f2fs: Use generic zoned block device terminology
  f2fs: Add missing break in switch-case
  f2fs: avoid infinite loop in the EIO case on recover_orphan_inodes
  f2fs: report error of f2fs_fill_dentries
  fs/crypto: catch up 4.9-rc6
  f2fs: hide a maybe-uninitialized warning
  f2fs: remove percpu_count due to performance regression
  f2fs: make clean inodes when flushing inode page
  f2fs: keep dirty inodes selectively for checkpoint
  f2fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps
  f2fs: use BIO_MAX_PAGES for bio allocation
  f2fs: declare static function for __build_free_nids
  f2fs: call f2fs_balance_fs for setattr
  f2fs: count dirty inodes to flush node pages during checkpoint
  f2fs: avoid casted negative value as shrink count
  f2fs: don't interrupt free nids building during nid allocation
  f2fs: clean up free nid list operations
  f2fs: split free nid list
  f2fs: clear nlink if fail to add_link
  f2fs: fix sparse warnings
  f2fs: fix error handling in fsync_node_pages
  f2fs: fix to update largest extent under lock
  f2fs: be aware of extent beyond EOF in fiemap
  f2fs: don't miss any f2fs_balance_fs cases
  f2fs: add missing f2fs_balance_fs in f2fs_zero_range
  f2fs: give a chance to detach from dirty list
  f2fs: fix to release discard entries during checkpoint
  f2fs: exclude free nids building and allocation
  f2fs: fix to determine start_cp_addr by sbi->cur_cp_pack
  f2fs: fix overflow due to condition check order
  posix_acl: Clear SGID bit when setting file permissions
  f2fs: fix wrong sum_page pointer in f2fs_gc
  f2fs: backport from (4c1fad64 - Merge tag 'for-f2fs-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs)

 Conflicts:
	Makefile
	arch/arm64/configs/cuttlefish_defconfig
	arch/arm64/kernel/vdso.c
	arch/arm64/kernel/vdso/gettimeofday.S
	arch/x86/configs/x86_64_cuttlefish_defconfig
	build.config.cuttlefish.aarch64
	build.config.cuttlefish.x86_64
	drivers/base/power/main.c
	drivers/block/loop.c
	drivers/block/zram/zram_drv.c
	drivers/block/zram/zram_drv.h
	drivers/net/wireless/virt_wifi.c
	drivers/staging/android/lowmemorykiller.c
	drivers/vhost/vsock.c
	fs/ext4/crypto.c
	fs/ext4/crypto_key.c
	fs/f2fs/checkpoint.c
	fs/f2fs/data.c
	fs/f2fs/dir.c
	fs/f2fs/f2fs.h
	fs/f2fs/file.c
	fs/f2fs/inline.c
	fs/f2fs/inode.c
	fs/f2fs/node.c
	fs/f2fs/recovery.c
	fs/f2fs/segment.c
	fs/f2fs/segment.h
	fs/f2fs/super.c
	fs/overlayfs/inode.c
	fs/sdcardfs/super.c
	fs/squashfs/block.c
	fs/squashfs/lz4_wrapper.c
	include/linux/bug.h
	include/linux/f2fs_fs.h
	include/linux/msm_mdp.h
	include/linux/swap.h
	include/linux/virtio_vsock.h
	kernel/cpu.c
	kernel/trace/trace.c
	lib/Kconfig.debug
	lib/list_debug.c
	mm/zsmalloc.c
	net/vmw_vsock/virtio_transport_common.c

Change-Id: Ic475eba811d0e6973a374771d68f31b15865efcc
2021-08-12 14:44:02 +03:00
Nathan Chancellor
4da1300261 Merge 4.4.195 into android-msm-wahoo-4.4
Changes in 4.4.195: (100 commits)
        Revert "Bluetooth: validate BLE connection interval updates"
        HID: prodikeys: Fix general protection fault during probe
        HID: lg: make transfer buffers DMA capable
        HID: logitech: Fix general protection fault caused by Logitech driver
        HID: hidraw: Fix invalid read in hidraw_ioctl
        mtd: cfi_cmdset_0002: Use chip_good() to retry in do_write_oneword()
        crypto: talitos - fix missing break in switch statement
        net: rds: Fix NULL ptr use in rds_tcp_kill_sock
        ASoC: fsl: Fix of-node refcount unbalance in fsl_ssi_probe_from_dt()
        ALSA: hda - Add laptop imic fixup for ASUS M9V laptop
        mac80211: Print text for disassociation reason
        mac80211: handle deauthentication/disassociation from TDLS peer
        locking/lockdep: Add debug_locks check in __lock_downgrade()
        irqchip/gic-v3-its: Fix LPI release for Multi-MSI devices
        f2fs: check all the data segments against all node ones
        Revert "f2fs: avoid out-of-range memory access"
        f2fs: fix to do sanity check on segment bitmap of LFS curseg
        drm: Flush output polling on shutdown
        Bluetooth: btrtl: Additional Realtek 8822CE Bluetooth devices
        arcnet: provide a buffer big enough to actually receive packets
        cdc_ncm: fix divide-by-zero caused by invalid wMaxPacketSize
        net/phy: fix DP83865 10 Mbps HDX loopback disable function
        openvswitch: change type of UPCALL_PID attribute to NLA_UNSPEC
        sch_netem: fix a divide by zero in tabledist()
        skge: fix checksum byte order
        usbnet: ignore endpoints with invalid wMaxPacketSize
        usbnet: sanity checking of packet sizes and device mtu
        mISDN: enforce CAP_NET_RAW for raw sockets
        appletalk: enforce CAP_NET_RAW for raw sockets
        ax25: enforce CAP_NET_RAW for raw sockets
        ieee802154: enforce CAP_NET_RAW for raw sockets
        nfc: enforce CAP_NET_RAW for raw sockets
        ALSA: hda: Flush interrupts on disabling
        ASoC: sgtl5000: Fix charge pump source assignment
        dmaengine: bcm2835: Print error in case setting DMA mask fails
        leds: leds-lp5562 allow firmware files up to the maximum length
        media: dib0700: fix link error for dibx000_i2c_set_speed
        media: hdpvr: Add device num check and handling
        sched/fair: Fix imbalance due to CPU affinity
        sched/core: Fix CPU controller for !RT_GROUP_SCHED
        x86/reboot: Always use NMI fallback when shutdown via reboot vector IPI fails
        x86/apic: Soft disable APIC before initializing it
        ALSA: hda - Show the fatal CORB/RIRB error more clearly
        ALSA: i2c: ak4xxx-adda: Fix a possible null pointer dereference in build_adc_controls()
        media: iguanair: add sanity checks
        base: soc: Export soc_device_register/unregister APIs
        ALSA: usb-audio: Skip bSynchAddress endpoint check if it is invalid
        ia64:unwind: fix double free for mod->arch.init_unw_table
        md: don't call spare_active in md_reap_sync_thread if all member devices can't work
        md: don't set In_sync if array is frozen
        efi: cper: print AER info of PCIe fatal error
        media: gspca: zero usb_buf on error
        dmaengine: iop-adma: use correct printk format strings
        media: omap3isp: Don't set streaming state on random subdevs
        net: lpc-enet: fix printk format strings
        media: radio/si470x: kill urb on error
        media: hdpvr: add terminating 0 at end of string
        media: saa7146: add cleanup in hexium_attach()
        media: cpia2_usb: fix memory leaks
        media: saa7134: fix terminology around saa7134_i2c_eeprom_md7134_gate()
        media: ov9650: add a sanity check
        ACPI / CPPC: do not require the _PSD method
        libtraceevent: Change users plugin directory
        ACPI: custom_method: fix memory leaks
        hwmon: (acpi_power_meter) Change log level for 'unsafe software power cap'
        md/raid1: fail run raid1 array when active disk less than one
        dmaengine: ti: edma: Do not reset reserved paRAM slots
        kprobes: Prohibit probing on BUG() and WARN() address
        ASoC: dmaengine: Make the pcm->name equal to pcm->id if the name is not set
        mmc: sdhci: Fix incorrect switch to HS mode
        libertas: Add missing sentinel at end of if_usb.c fw_table
        media: ttusb-dec: Fix info-leak in ttusb_dec_send_command()
        ALSA: hda/realtek - Blacklist PC beep for Lenovo ThinkCentre M73/93
        btrfs: extent-tree: Make sure we only allocate extents from block groups with the same type
        media: omap3isp: Set device on omap3isp subdevs
        ALSA: firewire-tascam: handle error code when getting current source of clock
        ALSA: firewire-tascam: check intermediate state of clock status and retry
        printk: Do not lose last line in kmsg buffer dump
        fuse: fix missing unlock_page in fuse_writepage()
        parisc: Disable HP HSC-PCI Cards to prevent kernel crash
        KVM: x86: always stop emulation on page fault
        KVM: x86: set ctxt->have_exception in x86_decode_insn()
        KVM: x86: Manually calculate reserved bits when loading PDPTRS
        media: sn9c20x: Add MSI MS-1039 laptop to flip_dmi_table
        ASoC: Intel: Fix use of potentially uninitialized variable
        ARM: zynq: Use memcpy_toio instead of memcpy on smp bring-up
        alarmtimer: Use EOPNOTSUPP instead of ENOTSUPP
        md/raid6: Set R5_ReadError when there is read failure on parity disk
        cfg80211: Purge frame registrations on iftype change
        /dev/mem: Bail out upon SIGKILL.
        ext4: fix punch hole for inline_data file systems
        quota: fix wrong condition in is_quota_modification()
        hwrng: core - don't wait on add_early_randomness()
        i2c: riic: Clear NACK in tend isr
        CIFS: Fix oplock handling for SMB 2.1+ protocols
        ovl: filter of trusted xattr results in audit
        Btrfs: fix use-after-free when using the tree modification log
        btrfs: Relinquish CPUs in btrfs_compare_trees
        Btrfs: fix race setting up and completing qgroup rescan workers
        Linux 4.4.195

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
2019-10-05 09:15:41 -07:00
Masami Hiramatsu
c0505afc8a kprobes: Prohibit probing on BUG() and WARN() address
[ Upstream commit e336b4027775cb458dc713745e526fa1a1996b2a ]

Since BUG() and WARN() may use a trap (e.g. UD2 on x86) to
get the address where the BUG() has occurred, kprobes can not
do single-step out-of-line that instruction. So prohibit
probing on such address.

Without this fix, if someone put a kprobe on WARN(), the
kernel will crash with invalid opcode error instead of
outputing warning message, because kernel can not find
correct bug address.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S . Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Naveen N . Rao <naveen.n.rao@linux.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/156750890133.19112.3393666300746167111.stgit@devnote2
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-10-05 12:27:50 +02:00
Kees Cook
a3772a806a UPSTREAM: bug: switch data corruption check to __must_check
(cherry-picked from 85caa95b9f19bb3a26d7e025d1134760b69e0c40)

The CHECK_DATA_CORRUPTION() macro was designed to have callers do
something meaningful/protective on failure.  However, using "return
false" in the macro too strictly limits the design patterns of callers.
Instead, let callers handle the logic test directly, but make sure that
the result IS checked by forcing __must_check (which appears to not be
able to be used directly on macro expressions).

Change-Id: I635dc2f39959104ea8b475d2d5018af3502f33ba
Link: http://lkml.kernel.org/r/20170206204547.GA125312@beast
Signed-off-by: Kees Cook <keescook@chromium.org>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Satya Tangirala <satyat@google.com>
2018-09-21 14:51:18 -07:00
Kees Cook
7514f97280 UPSTREAM: bug: Provide toggle for BUG on data corruption
(cherry-picked from de54ebbe26bb371a6f1fbc0593372232f04e3107)

The kernel checks for cases of data structure corruption under some
CONFIGs (e.g. CONFIG_DEBUG_LIST). When corruption is detected, some
systems may want to BUG() immediately instead of letting the system run
with known corruption.  Usually these kinds of manipulation primitives can
be used by security flaws to gain arbitrary memory write control. This
provides a new config CONFIG_BUG_ON_DATA_CORRUPTION and a corresponding
macro CHECK_DATA_CORRUPTION for handling these situations. Notably, even
if not BUGing, the kernel should not continue processing the corrupted
structure.

This is inspired by similar hardening by Syed Rameez Mustafa in MSM
kernels, and in PaX and Grsecurity, which is likely in response to earlier
removal of the BUG calls in commit 924d9addb9 ("list debugging: use
WARN() instead of BUG()").

Change-Id: I4cdfa9fbebe32a990a111d051e4ec4e421f77a09
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Satya Tangirala <satyat@google.com>
2018-09-21 14:51:06 -07:00
Ian Abbott
27dcc91fd5 BACKPORT: bug: split BUILD_BUG stuff out into <linux/build_bug.h>
Including <linux/bug.h> pulls in a lot of bloat from <asm/bug.h> and
<asm-generic/bug.h> that is not needed to call the BUILD_BUG() family of
macros.  Split them out into their own header, <linux/build_bug.h>.

Also correct some checkpatch.pl errors for the BUILD_BUG_ON_ZERO() and
BUILD_BUG_ON_NULL() macros by adding parentheses around the bitfield
widths that begin with a minus sign.

Change-Id: Icb4a456a5fcc21953c4e1df17fe3c4f41105996e
Link: http://lkml.kernel.org/r/20170525120316.24473-6-abbotti@mev.co.uk
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bug: 62057517
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
2017-07-31 20:36:32 -07:00
Syed Rameez Mustafa
e2cddd1040 kernel/lib: add additional debug capabilites for data corruption
Data corruptions in the kernel often end up in system crashes that
are easier to debug closer to the time of detection. Specifically,
if we do not panic immediately after lock or list corruptions have been
detected, the problem context is lost in the ensuing system mayhem.
Add support for allowing system crash immediately after such corruptions
are detected. The CONFIG option controls the enabling/disabling of the
feature.

Change-Id: I9b2eb62da506a13007acff63e85e9515145909ff
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>
[abhimany: minor merge conflict resolution]
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>
2016-03-22 11:16:29 -07:00
Daniel Santos
9a8ab1c399 bug.h, compiler.h: introduce compiletime_assert & BUILD_BUG_ON_MSG
Introduce compiletime_assert to compiler.h, which moves the details of
how to break a build and emit an error message for a specific compiler
to the headers where these details should be.  Following in the
tradition of the POSIX assert macro, compiletime_assert creates a
build-time error when the supplied condition is *false*.

Next, we add BUILD_BUG_ON_MSG to bug.h which simply wraps
compiletime_assert, inverting the logic, so that it fails when the
condition is *true*, consistent with the language "build bug on." This
macro allows you to specify the error message you want emitted when the
supplied condition is true.

Finally, we remove all other code from bug.h that mucks with these
details (BUILD_BUG & BUILD_BUG_ON), and have them all call
BUILD_BUG_ON_MSG.  This not only reduces source code bloat, but also
prevents the possibility of code being changed for one macro and not for
the other (which was previously the case for BUILD_BUG and
BUILD_BUG_ON).

Since __compiletime_error_fallback is now only used in compiler.h, I'm
considering it a private macro and removing the double negation that's
now extraneous.

[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Joe Perches <joe@perches.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21 17:22:16 -08:00
Daniel Santos
c361d3e543 compiler.h, bug.h: prevent double error messages with BUILD_BUG{,_ON}
Prior to the introduction of __attribute__((error("msg"))) in gcc 4.3,
creating compile-time errors required a little trickery.
BUILD_BUG{,_ON} uses this attribute when available to generate
compile-time errors, but also uses the negative-sized array trick for
older compilers, resulting in two error messages in some cases.  The
reason it's "some" cases is that as of gcc 4.4, the negative-sized array
will not create an error in some situations, like inline functions.

This patch replaces the negative-sized array code with the new
__compiletime_error_fallback() macro which expands to the same thing
unless the the error attribute is available, in which case it expands to
do{}while(0), resulting in exactly one compile-time error on all
versions of gcc.

Note that we are not changing the negative-sized array code for the
unoptimized version of BUILD_BUG_ON, since it has the potential to catch
problems that would be disabled in later versions of gcc were
__compiletime_error_fallback used.  The reason is that that an
unoptimized build can't always remove calls to an error-attributed
function call (like we are using) that should effectively become dead
code if it were optimized.  However, using a negative-sized array with a
similar value will not result in an false-positive (error).  The only
caveat being that it will also fail to catch valid conditions, which we
should be expecting in an unoptimized build anyway.

Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Joe Perches <joe@perches.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21 17:22:16 -08:00
Daniel Santos
a3ccc497cd bug.h: make BUILD_BUG_ON generate compile-time error
Negative sized arrays wont create a compile-time error in some cases
starting with gcc 4.4 (e.g., inlined functions), but gcc 4.3 introduced
the error function attribute that will.

This patch modifies BUILD_BUG_ON to behave like BUILD_BUG already does,
using the error function attribute so that you don't have to build the
entire kernel to discover that you have a problem, and then enjoy trying
to track it down from a link-time error.

Also, we are only including asm/bug.h and then expecting that
linux/compiler.h will eventually be included to define __linktime_error
(used in BUILD_BUG_ON).  This patch includes it directly for clarity and
to avoid the possibility of changes in <arch>/*/include/asm/bug.h being
changed or not including linux/compiler.h for some reason.

Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Joe Perches <joe@perches.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21 17:22:16 -08:00
Daniel Santos
1d6a0d19c8 bug.h: prevent double evaulation of `condition' in BUILD_BUG_ON
When calling BUILD_BUG_ON in an optimized build using gcc 4.3 and later,
the condition will be evaulated twice, possibily with side-effects.  This
patch eliminates that error.

[akpm@linux-foundation.org: tweak code layout]
Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Joe Perches <joe@perches.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21 17:22:16 -08:00
Daniel Santos
ca623c914e bug.h: fix BUILD_BUG_ON macro in __CHECKER__
When __CHECKER__ is defined, we disable all of the BUILD_BUG.* macros.
However, both BUILD_BUG_ON_NOT_POWER_OF_2 and BUILD_BUG_ON was evaluating
to nothing in this case, and we want (0) since this is a function-like
macro that will be followed by a semicolon.

Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Joe Perches <joe@perches.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21 17:22:15 -08:00
Daniel Santos
6ae8d04871 compiler{,-gcc4}.h, bug.h: Remove duplicate macros
__linktime_error() does the same thing as __compiletime_error() and is
only used in bug.h.  Since the macro defines a function attribute that
will cause a failure at compile-time (not link-time), it makes more sense
to keep __compiletime_error(), which is also neatly mated with
__compiletime_warning().

Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Joe Perches <joe@perches.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21 17:22:15 -08:00
Tushar Behera
c5782e9f5a include/linux/bug.h: fix sparse warning related to BUILD_BUG_ON_INVALID
Commit baf05aa927 ("bug: introduce BUILD_BUG_ON_INVALID() macro")
introduces this macro only when _CHECKER_ is not defined.  Define a
silent macro in the else condition to fix following sparse warning:

  mm/filemap.c:395:9: error: undefined identifier 'BUILD_BUG_ON_INVALID'
  mm/filemap.c:396:9: error: undefined identifier 'BUILD_BUG_ON_INVALID'
  mm/filemap.c:397:9: error: undefined identifier 'BUILD_BUG_ON_INVALID'
  include/linux/mm.h:419:9: error: undefined identifier 'BUILD_BUG_ON_INVALID'
  include/linux/mm.h:419:9: error: not a function <noident>

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Acked-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-26 17:41:24 -08:00
Konstantin Khlebnikov
baf05aa927 bug: introduce BUILD_BUG_ON_INVALID() macro
Sometimes we want to check some expressions correctness at compile time.
"(void)(e);" or "if (e);" can be dangerous if the expression has
side-effects, and gcc sometimes generates a lot of code, even if the
expression has no effect.

This patch introduces macro BUILD_BUG_ON_INVALID() for such checks, it
forces a compilation error if expression is invalid without any extra
code.

[Cast to "long" required because sizeof does not work for bit-fields.]

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-05-29 16:22:20 -07:00
Paul Gortmaker
35edd9103c bug: consolidate BUILD_BUG_ON with other bug code
The support for BUILD_BUG in linux/kernel.h predates the
addition of linux/bug.h -- with this chunk off separate,
you can run into situations where a person gets a compile
fail even when they've included linux/bug.h, like this:

    CC      lib/string.o
  lib/string.c: In function 'strlcat':
  lib/string.c:225:2: error: implicit declaration of function 'BUILD_BUG_ON'
  make[2]: *** [lib/string.o] Error 1
  $
  $ grep linux/bug.h lib/string.c
  #include <linux/bug.h>
  $

Since the above violates the principle of least surprise, move
the BUG chunks from kernel.h to bug.h so it is all together.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-03-04 17:54:35 -05:00
Andrew Morton
0d9c25dde8 headers: move module_bug_finalize()/module_bug_cleanup() definitions into module.h
They're in linux/bug.h at present, which causes include order tangles.  In
particular, linux/bug.h cannot be used by linux/atomic.h because,
according to Nikanth:

linux/bug.h pulls in linux/module.h => linux/spinlock.h => asm/spinlock.h
(which uses atomic_inc) => asm/atomic.h.

bug.h is a pretty low-level thing and module.h is a higher-level thing,
IMO.

Cc: Nikanth Karthikesan <knikanth@novell.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16 19:47:48 -07:00
Heiko Carstens
608e261968 generic bug: use show_regs() instead of dump_stack()
The current generic bug implementation has a call to dump_stack() in case a
WARN_ON(whatever) gets hit.  Since report_bug(), which calls dump_stack(),
gets called from an exception handler we can do better: just pass the
pt_regs structure to report_bug() and pass it to show_regs() in case of a
warning.  This will give more debug informations like register contents,
etc...  In addition this avoids some pointless lines that dump_stack()
emits, since it includes a stack backtrace of the exception handler which
is of no interest in case of a warning.  E.g.  on s390 the following lines
are currently always present in a stack backtrace if dump_stack() gets
called from report_bug():

 [<000000000001517a>] show_trace+0x92/0xe8)
 [<0000000000015270>] show_stack+0xa0/0xd0
 [<00000000000152ce>] dump_stack+0x2e/0x3c
 [<0000000000195450>] report_bug+0x98/0xf8
 [<0000000000016cc8>] illegal_op+0x1fc/0x21c
 [<00000000000227d6>] sysc_return+0x0/0x10

Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Kyle McMartin <kyle@parisc-linux.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:51 -07:00
Jeremy Fitzhardinge
7664c5a1da [PATCH] Generic BUG implementation
This patch adds common handling for kernel BUGs, for use by architectures as
they wish.  The code is derived from arch/powerpc.

The advantages of having common BUG handling are:
 - consistent BUG reporting across architectures
 - shared implementation of out-of-line file/line data
 - implement CONFIG_DEBUG_BUGVERBOSE consistently

This means that in inline impact of BUG is just the illegal instruction
itself, which is an improvement for i386 and x86-64.

A BUG is represented in the instruction stream as an illegal instruction,
which has file/line information associated with it.  This extra information is
stored in the __bug_table section in the ELF file.

When the kernel gets an illegal instruction, it first confirms it might
possibly be from a BUG (ie, in kernel mode, the right illegal instruction).
It then calls report_bug().  This searches __bug_table for a matching
instruction pointer, and if found, prints the corresponding file/line
information.  If report_bug() determines that it wasn't a BUG which caused the
trap, it returns BUG_TRAP_TYPE_NONE.

Some architectures (powerpc) implement WARN using the same mechanism; if the
illegal instruction was the result of a WARN, then report_bug(Q) returns
CONFIG_DEBUG_BUGVERBOSE; otherwise it returns BUG_TRAP_TYPE_BUG.

lib/bug.c keeps a list of loaded modules which can be searched for __bug_table
entries.  The architecture must call
module_bug_finalize()/module_bug_cleanup() from its corresponding
module_finalize/cleanup functions.

Unsetting CONFIG_DEBUG_BUGVERBOSE will reduce the kernel size by some amount.
At the very least, filename and line information will not be recorded for each
but, but architectures may decide to store no extra information per BUG at
all.

Unfortunately, gcc doesn't have a general way to mark an asm() as noreturn, so
architectures will generally have to include an infinite loop (or similar) in
the BUG code, so that gcc knows execution won't continue beyond that point.
gcc does have a __builtin_trap() operator which may be useful to achieve the
same effect, unfortunately it cannot be used to actually implement the BUG
itself, because there's no way to get the instruction's address for use in
generating the __bug_table entry.

[randy.dunlap@oracle.com: Handle BUG=n, GENERIC_BUG=n to prevent build errors]
[bunk@stusta.de: include/linux/bug.h must always #include <linux/module.h]
Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Andi Kleen <ak@muc.de>
Cc: Hugh Dickens <hugh@veritas.com>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:28:39 -08:00