diff options
| author | Daniel Rosenberg <drosen@google.com> | 2016-02-11 16:44:15 -0800 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-11 10:59:49 +0200 |
| commit | 1b404f49e94fb35fa6c9b0f8d2342d1a9b1f9a53 (patch) | |
| tree | a635a6b3bfa7230b60f5a11eabe9fd2a28c912b1 /include/linux/dcache.h | |
| parent | 72421f134c3003b8dc02c8ed79d0896dbfe804fb (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/dcache.h')
| -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 c1999d1fe..00eaec48c 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -158,6 +158,7 @@ struct dentry_operations { char *(*d_dname)(struct dentry *, char *, int); struct vfsmount *(*d_automount)(struct path *); int (*d_manage)(struct dentry *, bool); + void (*d_canonical_path)(const struct dentry *, struct path *); } ____cacheline_aligned; /* |