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| author |   Amir Goldstein <amir73il@gmail.com> | 2017-06-21 13:46:12 +0300 |
|---|---|---|
| committer |   Miklos Szeredi <mszeredi@redhat.com> | 2017-07-04 22:03:19 +0200 |
| commit | caf70cb2ba5dff85ea90f494a30075af92df13b0 (patch) | |
| tree | d93982b090f4ff5f56a733e8aec083959f4a567a /fs/overlayfs/super.c | |
| parent | ovl: persistent overlay inode nlink for indexed inodes (diff) | |
| download | linux-dev-caf70cb2ba5dff85ea90f494a30075af92df13b0.tar.xz linux-dev-caf70cb2ba5dff85ea90f494a30075af92df13b0.zip | |
ovl: cleanup orphan index entries
index entry should live only as long as there are upper or lower
hardlinks.
Cleanup orphan index entries on mount and when dropping the last
overlay inode nlink.
When about to cleanup or link up to orphan index and the index inode
nlink > 1, admit that something went wrong and adjust overlay nlink
to index inode nlink - 1 to prevent it from dropping below zero.
This could happen when adding lower hardlinks underneath a mounted
overlay and then trying to unlink them.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/super.c')
| -rw-r--r-- | fs/overlayfs/super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index f29ee08cf99f..44dc2d6ffe0f 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -1069,7 +1069,7 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent) if (err) pr_err("overlayfs: failed to verify index dir origin\n"); - /* Cleanup bad/stale index entries */ + /* Cleanup bad/stale/orphan index entries */ if (!err) err = ovl_indexdir_cleanup(ufs->indexdir, ufs->upper_mnt, |