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| author | Amir Goldstein <amir73il@gmail.com> | 2017-10-24 17:38:33 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2018-01-24 13:25:56 +0300 |
| commit | e7dd0e71348c1e3bc4b9d767c1ffbcbdee46a726 (patch) | |
| tree | dcba3e99e1d07da04c4f9cfec83715c4b0d169ea /fs/overlayfs/overlayfs.h | |
| parent | 89a17556ce4d113f6e7896e118a14f79a84484e9 (diff) | |
| download | linux-e7dd0e71348c1e3bc4b9d767c1ffbcbdee46a726.tar.xz | |
ovl: whiteout index when union nlink drops to zero
With NFS export feature enabled, when overlay inode nlink drops to
zero, instead of removing the index entry, replace it with a whiteout
index entry.
This is needed for NFS export in order to prevent future open by handle
from opening the lower file directly.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/overlayfs.h')
| -rw-r--r-- | fs/overlayfs/overlayfs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index d7e65284c13b..8f4313c6693b 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -321,6 +321,8 @@ static inline void ovl_copyattr(struct inode *from, struct inode *to) /* dir.c */ extern const struct inode_operations ovl_dir_inode_operations; struct dentry *ovl_lookup_temp(struct dentry *workdir); +int ovl_cleanup_and_whiteout(struct dentry *workdir, struct inode *dir, + struct dentry *dentry); struct cattr { dev_t rdev; umode_t mode; |