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| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-09-16 13:44:20 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-09-16 13:44:20 +0300 |
| commit | 598e3c8f72f5b77c84d2cb26cfd936ffb3cfdbaa (patch) | |
| tree | 485f1dd152279acde134219e011f3f1dadbe5495 /fs/internal.h | |
| parent | f2b20f6ee842313a0d681dbbf7f87b70291a6a3b (diff) | |
| download | linux-598e3c8f72f5b77c84d2cb26cfd936ffb3cfdbaa.tar.xz | |
vfs: update ovl inode before relatime check
On overlayfs relatime_need_update() needs inode times to be correct on
overlay inode. But i_mtime and i_ctime are updated by filesystem code on
underlying inode only, so they will be out-of-date on the overlay inode.
This patch copies the times from the underlying inode if needed. This
can't be done if called from RCU lookup (link following) but link m/ctime
are not updated by fs, so this is all right.
This patch doesn't change functionality for anything but overlayfs.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/internal.h')
| -rw-r--r-- | fs/internal.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/internal.h b/fs/internal.h index ba0737649d4a..a63da5e96148 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -120,6 +120,15 @@ extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc); extern void inode_add_lru(struct inode *inode); extern int dentry_needs_remove_privs(struct dentry *dentry); +extern bool __atime_needs_update(const struct path *, struct inode *, bool); +static inline bool atime_needs_update_rcu(const struct path *path, + struct inode *inode) +{ + return __atime_needs_update(path, inode, true); +} + +extern bool atime_needs_update_rcu(const struct path *, struct inode *); + /* * fs-writeback.c */ |