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| author |   Lino Sanfilippo <LinoSanfilippo@gmx.de> | 2015-02-10 14:08:21 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-10 14:30:28 -0800 |
| commit | a118449a7792ea800db6f23cf6c1d2f937c2629a (patch) | |
| tree | 97b1d34b544a9367ecb19035e7b6dcb231254004 /fs | |
| parent | hugetlb, x86: register 1G page size if we can allocate them at runtime (diff) | |
| download | linux-dev-a118449a7792ea800db6f23cf6c1d2f937c2629a.tar.xz linux-dev-a118449a7792ea800db6f23cf6c1d2f937c2629a.zip | |
fanotify: only destroy mark when both mask and ignored_mask are cleared
In fanotify_mark_remove_from_mask() a mark is destroyed if only one of
both bitmasks (mask or ignored_mask) of a mark is cleared. However the
other mask may still be set and contain information that should not be
lost. So only destroy a mark if both masks are cleared.
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')
| -rw-r--r-- | fs/notify/fanotify/fanotify_user.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index bff8567aa42d..25adb6d1b3db 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -497,10 +497,9 @@ static __u32 fanotify_mark_remove_from_mask(struct fsnotify_mark *fsn_mark, oldmask = fsn_mark->ignored_mask; fsnotify_set_mark_ignored_mask_locked(fsn_mark, (oldmask & ~mask)); } + *destroy = !(fsn_mark->mask | fsn_mark->ignored_mask); spin_unlock(&fsn_mark->lock); - *destroy = !(oldmask & ~mask); - return mask & oldmask; } |