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authorEric Paris <eparis@redhat.com>2009-12-17 20:12:05 -0500
committerEric Paris <eparis@redhat.com>2010-07-28 09:58:17 -0400
commit40554c3dae83bd892b7fbfaa2ea9de739cbcf065 (patch)
tree7b9d4951734af9d819a900ff08f23c797a5c1b5c /fs/notify/inode_mark.c
parent9e1c74321d87a8b079f04d89e750b39a43365e1f (diff)
downloadlinux-40554c3dae83bd892b7fbfaa2ea9de739cbcf065.tar.gz
fsnotify: allow addition of duplicate fsnotify marks
This patch allows a task to add a second fsnotify mark to an inode for the same group. This mark will be added to the end of the inode's list and this will never be found by the stand fsnotify_find_mark() function. This is useful if a user wants to add a new mark before removing the old one. Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'fs/notify/inode_mark.c')
-rw-r--r--fs/notify/inode_mark.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c
index a13cf9e9233..7d2962e5328 100644
--- a/fs/notify/inode_mark.c
+++ b/fs/notify/inode_mark.c
@@ -312,9 +312,10 @@ void fsnotify_init_mark(struct fsnotify_mark_entry *entry,
* event types should be delivered to which group and for which inodes.
*/
int fsnotify_add_mark(struct fsnotify_mark_entry *entry,
- struct fsnotify_group *group, struct inode *inode)
+ struct fsnotify_group *group, struct inode *inode,
+ int allow_dups)
{
- struct fsnotify_mark_entry *lentry;
+ struct fsnotify_mark_entry *lentry = NULL;
int ret = 0;
inode = igrab(inode);
@@ -331,7 +332,8 @@ int fsnotify_add_mark(struct fsnotify_mark_entry *entry,
spin_lock(&group->mark_lock);
spin_lock(&inode->i_lock);
- lentry = fsnotify_find_mark_entry(group, inode);
+ if (!allow_dups)
+ lentry = fsnotify_find_mark_entry(group, inode);
if (!lentry) {
entry->group = group;
entry->inode = inode;