diff options
| author | Daniel Rosenberg <drosen@google.com> | 2016-02-11 16:44:15 -0800 |
|---|---|---|
| committer | Daniel Rosenberg <drosen@google.com> | 2016-03-22 20:27:13 -0700 |
| commit | 530d9c5fc268b0c90ffbca40384f9ee657076724 (patch) | |
| tree | 1260e24f953d1dc8f4da588b600252cecf53ff4b /include/linux | |
| parent | 1e2d3bbcf3f5a603e62dfa0514a43e13ee679d4f (diff) | |
vfs: add d_canonical_path for stacked filesystem support
Inotify does not currently know when a filesystem
is acting as a wrapper around another fs. This means
that inotify watchers will miss any modifications to
the base file, as well as any made in a separate
stacked fs that points to the same file.
d_canonical_path solves this problem by allowing the fs
to map a dentry to a path in the lower fs. Inotify
can use it to find the appropriate place to watch to
be informed of all changes to a file.
Change-Id: I09563baffad1711a045e45c1bd0bd8713c2cc0b6
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/dcache.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/dcache.h b/include/linux/dcache.h index d67ae119cf4e..ebad56e31a8c 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -161,6 +161,7 @@ struct dentry_operations { struct vfsmount *(*d_automount)(struct path *); int (*d_manage)(struct dentry *, bool); struct inode *(*d_select_inode)(struct dentry *, unsigned); + void (*d_canonical_path)(const struct dentry *, struct path *); } ____cacheline_aligned; /* |