dnotify: use the mark in handler functions

dnotify now gets a mark in the should_send_event and handle_event
functions.  Rather than look up the mark themselves dnotify should just use
the mark it was handed.

Signed-off-by: Eric Paris <eparis@redhat.com>

diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c
index 2cae9be..e3e855f 100644 (file)
--- a/fs/notify/dnotify/dnotify.c
+++ b/fs/notify/dnotify/dnotify.c
@@ -86,7 +86,6 @@ static int dnotify_handle_event(struct fsnotify_group *group,
                                struct fsnotify_mark *mark,
                                struct fsnotify_event *event)
 {
-       struct fsnotify_mark *fsn_mark = NULL;
        struct dnotify_mark *dn_mark;
        struct inode *to_tell;
        struct dnotify_struct *dn;
@@ -96,12 +95,9 @@ static int dnotify_handle_event(struct fsnotify_group *group,
 
        to_tell = event->to_tell;
 
-       fsn_mark = fsnotify_find_inode_mark(group, to_tell);
-       if (unlikely(!fsn_mark))
-               return 0;
-       dn_mark = container_of(fsn_mark, struct dnotify_mark, fsn_mark);
+       dn_mark = container_of(mark, struct dnotify_mark, fsn_mark);
 
-       spin_lock(&fsn_mark->lock);
+       spin_lock(&mark->lock);
        prev = &dn_mark->dn;
        while ((dn = *prev) != NULL) {
                if ((dn->dn_mask & test_mask) == 0) {
@@ -115,12 +111,11 @@ static int dnotify_handle_event(struct fsnotify_group *group,
                else {
                        *prev = dn->dn_next;
                        kmem_cache_free(dnotify_struct_cache, dn);
-                       dnotify_recalc_inode_mask(fsn_mark);
+                       dnotify_recalc_inode_mask(mark);
                }
        }
 
-       spin_unlock(&fsn_mark->lock);
-       fsnotify_put_mark(fsn_mark);
+       spin_unlock(&mark->lock);
 
        return 0;
 }
@@ -134,7 +129,6 @@ static bool dnotify_should_send_event(struct fsnotify_group *group,
                                      struct fsnotify_mark *mark, __u32 mask,
                                      void *data, int data_type)
 {
-       struct fsnotify_mark *fsn_mark;
        bool send;
 
        /* !dir_notify_enable should never get here, don't waste time checking
@@ -145,14 +139,8 @@ static bool dnotify_should_send_event(struct fsnotify_group *group,
        if (!S_ISDIR(inode->i_mode))
                return false;
 
-       fsn_mark = fsnotify_find_inode_mark(group, inode);
-       if (!fsn_mark)
-               return false;
-
        mask = (mask & ~FS_EVENT_ON_CHILD);
-       send = (mask & fsn_mark->mask);
-
-       fsnotify_put_mark(fsn_mark); /* matches fsnotify_find_inode_mark */
+       send = (mask & mark->mask);
 
        return send;
 }