path: root/fs/notify
diff options
authorAmir Goldstein <amir73il@gmail.com>2018-10-04 00:25:33 +0300
committerJan Kara <jack@suse.cz>2018-10-04 13:28:02 +0200
commit007d1e8395eaa59b0e7ad9eb2b53a40859446a88 (patch)
treeba3cafc48e79f3489f5faccfd5935cf2141f76f9 /fs/notify
parentb723a7911d028fb55f67a63c4c4d895f72e059d4 (diff)
fsnotify: generalize handling of extra event flags
FS_EVENT_ON_CHILD gets a special treatment in fsnotify() because it is not a flag specifying an event type, but rather an extra flags that may be reported along with another event and control the handling of the event by the backend. FS_ISDIR is also an "extra flag" and not an "event type" and therefore desrves the same treatment. With inotify/dnotify backends it was never possible to set FS_ISDIR in mark masks, so it did not matter. With fanotify backend, mark adding code jumps through hoops to avoid setting the FS_ISDIR in the commulative object mask. Separate the constant ALL_FSNOTIFY_EVENTS to ALL_FSNOTIFY_FLAGS and ALL_FSNOTIFY_EVENTS, so the latter can be used to test for specific event types. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify')
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index 422fbc6dffde..7391a02bf723 100644
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -196,7 +196,7 @@ static int send_to_group(struct inode *to_tell,
struct fsnotify_iter_info *iter_info)
struct fsnotify_group *group = NULL;
- __u32 test_mask = (mask & ~FS_EVENT_ON_CHILD);
+ __u32 test_mask = (mask & ALL_FSNOTIFY_EVENTS);
__u32 marks_mask = 0;
__u32 marks_ignored_mask = 0;
struct fsnotify_mark *mark;
@@ -329,8 +329,7 @@ int fsnotify(struct inode *to_tell, __u32 mask, const void *data, int data_is,
struct mount *mnt = NULL;
__u32 mnt_or_sb_mask = 0;
int ret = 0;
- /* global tests shouldn't care about events on child only the specific event */
- __u32 test_mask = (mask & ~FS_EVENT_ON_CHILD);
+ __u32 test_mask = (mask & ALL_FSNOTIFY_EVENTS);
if (data_is == FSNOTIFY_EVENT_PATH) {
mnt = real_mount(((const struct path *)data)->mnt);
@@ -396,7 +395,7 @@ static __init int fsnotify_init(void)
int ret;
- BUG_ON(hweight32(ALL_FSNOTIFY_EVENTS) != 23);
+ BUG_ON(hweight32(ALL_FSNOTIFY_BITS) != 23);
ret = init_srcu_struct(&fsnotify_mark_srcu);
if (ret)