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| author | Eric Paris <eparis@redhat.com> | 2009-12-17 21:24:33 -0500 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2010-07-28 09:59:00 -0400 |
| commit | 33af5e32e0bb73c704b5e156f4411cdb53e6cc59 (patch) | |
| tree | c427a66b81498c14598ed4161e3646930a805043 | |
| parent | 90b1e7a57880fb66437ab7db39e1e65ca0372822 (diff) | |
| download | linux-33af5e32e0bb73c704b5e156f4411cdb53e6cc59.tar.gz linux-33af5e32e0bb73c704b5e156f4411cdb53e6cc59.tar.bz2 linux-33af5e32e0bb73c704b5e156f4411cdb53e6cc59.zip | |
fsnotify: ignored_mask - excluding notification
The ignored_mask is a new mask which is part of fsnotify marks. A group's
should_send_event() function can use the ignored mask to determine that
certain events are not of interest. In particular if a group registers a
mask including FS_OPEN on a vfsmount they could add FS_OPEN to the
ignored_mask for individual inodes and not send open events for those
inodes.
Signed-off-by: Eric Paris <eparis@redhat.com>
| -rw-r--r-- | fs/notify/mark.c | 6 | ||||
| -rw-r--r-- | include/linux/fsnotify_backend.h | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/fs/notify/mark.c b/fs/notify/mark.c index 0ebc3fd7089b..cb1d822f227f 100644 --- a/fs/notify/mark.c +++ b/fs/notify/mark.c @@ -190,6 +190,12 @@ void fsnotify_set_mark_mask_locked(struct fsnotify_mark *mark, __u32 mask) fsnotify_set_inode_mark_mask_locked(mark, mask); } +void fsnotify_set_mark_ignored_mask_locked(struct fsnotify_mark *mark, __u32 mask) +{ + assert_spin_locked(&mark->lock); + + mark->ignored_mask = mask; +} /* * Attach an initialized mark to a given group and fs object. diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h index 489c881ed4ec..018416ec5ce4 100644 --- a/include/linux/fsnotify_backend.h +++ b/include/linux/fsnotify_backend.h @@ -266,6 +266,7 @@ struct fsnotify_mark { struct fsnotify_inode_mark i; struct fsnotify_vfsmount_mark m; }; + __u32 ignored_mask; /* events types to ignore */ struct list_head free_g_list; /* tmp list used when freeing this mark */ #define FSNOTIFY_MARK_FLAG_INODE 0x01 #define FSNOTIFY_MARK_FLAG_VFSMOUNT 0x02 @@ -373,6 +374,8 @@ extern struct fsnotify_mark *fsnotify_find_inode_mark(struct fsnotify_group *gro extern struct fsnotify_mark *fsnotify_find_vfsmount_mark(struct fsnotify_group *group, struct vfsmount *mnt); /* copy the values from old into new */ extern void fsnotify_duplicate_mark(struct fsnotify_mark *new, struct fsnotify_mark *old); +/* set the ignored_mask of a mark */ +extern void fsnotify_set_mark_ignored_mask_locked(struct fsnotify_mark *mark, __u32 mask); /* set the mask of a mark (might pin the object into memory */ extern void fsnotify_set_mark_mask_locked(struct fsnotify_mark *mark, __u32 mask); /* attach the mark to both the group and the inode */ |