Evolution-X-Devices/kernel_xiaomi_mt6781
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UPSTREAM: vfs: Convert bdev to use the new mount API

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Convert the bdev filesystem to the new internal mount API as the old
one will be obsoleted and removed.  This allows greater flexibility in
communication of mount parameters between userspace, the VFS and the
filesystem.

See Documentation/filesystems/mount_api.txt for more information.

Change-Id: Id639f03fca0c45b7b94afc3abb93a14cb575fb79
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
David Howells
2019-03-25 16:38:23 +00:00
committed by bengris32
parent b3824e415d
commit dad65a3143
1 changed files with 9 additions and 8 deletions
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17
fs/block_dev.c
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@@ -25,6 +25,7 @@
#include <linux/writeback.h>
#include <linux/mpage.h>
#include <linux/mount.h>
#include <linux/pseudo_fs.h>
#include <linux/uio.h>
#include <linux/namei.h>
#include <linux/log2.h>
@@ -802,19 +803,19 @@ static const struct super_operations bdev_sops = {
.evict_inode = bdev_evict_inode,
};
static struct dentry *bd_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
static int bd_init_fs_context(struct fs_context *fc)
{
struct dentry *dent;
dent = mount_pseudo(fs_type, &bdev_sops, NULL, BDEVFS_MAGIC);
if (!IS_ERR(dent))
dent->d_sb->s_iflags |= SB_I_CGROUPWB;
return dent;
struct pseudo_fs_context *ctx = init_pseudo(fc, BDEVFS_MAGIC);
if (!ctx)
return -ENOMEM;
fc->s_iflags |= SB_I_CGROUPWB;
ctx->ops = &bdev_sops;
return 0;
}
static struct file_system_type bd_type = {
.name = "bdev",
.mount = bd_mount,
.init_fs_context = bd_init_fs_context,
.kill_sb = kill_anon_super,
};