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authorLino Sanfilippo <LinoSanfilippo@gmx.de>2011-06-14 17:29:49 +0200
committerEric Paris <eparis@redhat.com>2012-12-11 13:29:45 -0500
commit6dfbd149946c22c2e2886d6b560def78630c8387 (patch)
tree8d13ff7c1f0a8581d15ebcad6af31953d9ed290b /fs/notify
parent104d06f08ea59247cb0e7e548c5a5d22d21dcfd5 (diff)
downloadlinux-linaro-stable-6dfbd149946c22c2e2886d6b560def78630c8387.tar.gz
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/notify')
-rw-r--r--fs/notify/fanotify/fanotify_user.c19
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)