Evolution-X-Devices/kernel_xiaomi_taoyao
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ANDROID: incremental-fs: remove index and incomplete dir on umount

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Cleanup incremental-fs left overs on umount, otherwise incr-fs will
complain as below:

BUG: Dentry {i=47a,n=.incomplete} still in use [unmount of incremental-fs]

This requires vfs_rmdir() of the special index dir.
Since set_anon_super() was used in incfs_mount_fs() the incfs_kill_sb()
should use kill_anon_super() instead of generic_shutdown_super()
otherwise it will leak the pseudo dev_t that set_anon_super() allocates.

Bug: 211066171

Signed-off-by: Tadeusz Struk <tadeusz.struk@linaro.org>
Change-Id: I7ea54db63513fc130e1997cbf79121015ee12405
This commit is contained in:
Tadeusz Struk
2022-01-26 13:09:39 -08:00
parent 7aedba616c
commit fe0c18d0f0
1 changed files with 3 additions and 2 deletions
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5
fs/incfs/vfs.c
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@@ -2269,7 +2269,7 @@ struct dentry *incfs_mount_fs(struct file_system_type *type, int flags,
goto err;
}
path_put(&backing_dir_path);
mi->mi_backing_dir_path = backing_dir_path;
sb->s_flags |= SB_ACTIVE;
pr_debug("incfs: mount\n");
@@ -2309,8 +2309,9 @@ void incfs_kill_sb(struct super_block *sb)
struct mount_info *mi = sb->s_fs_info;
pr_debug("incfs: unmount\n");
vfs_rmdir(d_inode(mi->mi_backing_dir_path.dentry), mi->mi_index_dir);
kill_anon_super(sb);
incfs_free_mount_info(mi);
generic_shutdown_super(sb);
sb->s_fs_info = NULL;
}