diff options
| author | Lino Sanfilippo <LinoSanfilippo@gmx.de> | 2015-02-11 01:08:24 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-11 01:30:28 +0300 |
| commit | d2c1874ce687c175b544bc28b6187bf03735a931 (patch) | |
| tree | 0380096d752790810a57cd74573c27e355cabb4a /fs/notify/fanotify | |
| parent | a118449a7792ea800db6f23cf6c1d2f937c2629a (diff) | |
| download | linux-d2c1874ce687c175b544bc28b6187bf03735a931.tar.xz | |
fanotify: don't recalculate a marks mask if only the ignored mask changed
If removing bits from a mark's ignored mask, the concerning
inodes/vfsmounts mask is not affected. So don't recalculate it.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Eric Paris <eparis@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/notify/fanotify')
| -rw-r--r-- | fs/notify/fanotify/fanotify_user.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 25adb6d1b3db..f4d279807a96 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -487,15 +487,16 @@ static __u32 fanotify_mark_remove_from_mask(struct fsnotify_mark *fsn_mark, unsigned int flags, int *destroy) { - __u32 oldmask; + __u32 oldmask = 0; spin_lock(&fsn_mark->lock); if (!(flags & FAN_MARK_IGNORED_MASK)) { oldmask = fsn_mark->mask; fsnotify_set_mark_mask_locked(fsn_mark, (oldmask & ~mask)); } else { - oldmask = fsn_mark->ignored_mask; - fsnotify_set_mark_ignored_mask_locked(fsn_mark, (oldmask & ~mask)); + __u32 tmask = fsn_mark->ignored_mask & ~mask; + + fsnotify_set_mark_ignored_mask_locked(fsn_mark, tmask); } *destroy = !(fsn_mark->mask | fsn_mark->ignored_mask); spin_unlock(&fsn_mark->lock); |