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| author | Lino Sanfilippo <LinoSanfilippo@gmx.de> | 2011-06-14 17:29:49 +0200 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2012-12-11 19:29:45 +0100 |
| commit | 6dfbd149946c22c2e2886d6b560def78630c8387 (patch) | |
| tree | 8d13ff7c1f0a8581d15ebcad6af31953d9ed290b /fs | |
| parent | fsnotify: take groups mark_lock before mark lock (diff) | |
| download | linux-6dfbd149946c22c2e2886d6b560def78630c8387.tar.xz linux-6dfbd149946c22c2e2886d6b560def78630c8387.zip | |
fanotify: add an extra flag to mark_remove_from_mask that indicates wheather a mark should be destroyed
This patch adds an extra flag to mark_remove_from_mask() to inform the caller if
the mark should be destroyed.
With this we dont destroy the mark implicitly in the function itself any more
but let the caller handle it.
Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/notify/fanotify/fanotify_user.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 82ae6d783c14..599a01952c74 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -511,7 +511,8 @@ out: static __u32 fanotify_mark_remove_from_mask(struct fsnotify_mark *fsn_mark, __u32 mask, - unsigned int flags) + unsigned int flags, + int *destroy) { __u32 oldmask; @@ -525,8 +526,7 @@ static __u32 fanotify_mark_remove_from_mask(struct fsnotify_mark *fsn_mark, } spin_unlock(&fsn_mark->lock); - if (!(oldmask & ~mask)) - fsnotify_destroy_mark(fsn_mark); + *destroy = !(oldmask & ~mask); return mask & oldmask; } @@ -537,12 +537,17 @@ static int fanotify_remove_vfsmount_mark(struct fsnotify_group *group, { struct fsnotify_mark *fsn_mark = NULL; __u32 removed; + int destroy_mark; fsn_mark = fsnotify_find_vfsmount_mark(group, mnt); if (!fsn_mark) return -ENOENT; - removed = fanotify_mark_remove_from_mask(fsn_mark, mask, flags); + removed = fanotify_mark_remove_from_mask(fsn_mark, mask, flags, + &destroy_mark); + if (destroy_mark) + fsnotify_destroy_mark(fsn_mark); + fsnotify_put_mark(fsn_mark); if (removed & real_mount(mnt)->mnt_fsnotify_mask) fsnotify_recalc_vfsmount_mask(mnt); @@ -556,12 +561,16 @@ static int fanotify_remove_inode_mark(struct fsnotify_group *group, { struct fsnotify_mark *fsn_mark = NULL; __u32 removed; + int destroy_mark; fsn_mark = fsnotify_find_inode_mark(group, inode); if (!fsn_mark) return -ENOENT; - removed = fanotify_mark_remove_from_mask(fsn_mark, mask, flags); + removed = fanotify_mark_remove_from_mask(fsn_mark, mask, flags, + &destroy_mark); + if (destroy_mark) + fsnotify_destroy_mark(fsn_mark); /* matches the fsnotify_find_inode_mark() */ fsnotify_put_mark(fsn_mark); if (removed & inode->i_fsnotify_mask) |