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| author | Lino Sanfilippo <LinoSanfilippo@gmx.de> | 2011-06-14 19:29:46 +0400 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2012-12-11 22:29:44 +0400 |
| commit | 986129520479d689962a42c31acdeaf854ac91f5 (patch) | |
| tree | 0054f75371764fc0a5cc0d194ea7f85e8b94f9d8 | |
| parent | d8153d4d8b7b6141770e1416c4a338161205ed1b (diff) | |
| download | linux-986129520479d689962a42c31acdeaf854ac91f5.tar.xz | |
fsnotify: introduce fsnotify_get_group()
Introduce fsnotify_get_group() which increments the reference counter of a group.
Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Signed-off-by: Eric Paris <eparis@redhat.com>
| -rw-r--r-- | fs/notify/group.c | 8 | ||||
| -rw-r--r-- | include/linux/fsnotify_backend.h | 4 |
2 files changed, 11 insertions, 1 deletions
diff --git a/fs/notify/group.c b/fs/notify/group.c index cfda328c3d11..1d57c35f1043 100644 --- a/fs/notify/group.c +++ b/fs/notify/group.c @@ -63,6 +63,14 @@ void fsnotify_destroy_group(struct fsnotify_group *group) } /* + * Get reference to a group. + */ +void fsnotify_get_group(struct fsnotify_group *group) +{ + atomic_inc(&group->refcnt); +} + +/* * Drop a reference to a group. Free it if it's through. */ void fsnotify_put_group(struct fsnotify_group *group) diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index d2ad345bdeec..e76cef75295d 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -360,8 +360,10 @@ static inline void __fsnotify_d_instantiate(struct dentry *dentry, struct inode /* called from fsnotify listeners, such as fanotify or dnotify */ -/* get a reference to an existing or create a new group */ +/* create a new group */ extern struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops); +/* get reference to a group */ +extern void fsnotify_get_group(struct fsnotify_group *group); /* drop reference on a group from fsnotify_alloc_group */ extern void fsnotify_put_group(struct fsnotify_group *group); /* destroy group */ |