From: Jan Kara Date: Thu, 3 Apr 2014 21:46:32 +0000 (-0700) Subject: fanotify: remove useless bypass_perm check X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3298cf37bee59c66a51da0cea8bae0d0418e27fd;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git fanotify: remove useless bypass_perm check The prepare_for_access_response() function checks whether group->fanotify_data.bypass_perm is set. However this test can never be true because prepare_for_access_response() is called only from fanotify_read() which means fanotify group is alive with an active fd while bypass_perm is set from fanotify_release() when all file descriptors pointing to the group are closed and the group is going away. Signed-off-by: Jan Kara Cc: Eric Paris Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 287a22c04149..70fe65437d21 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -211,14 +211,6 @@ static int prepare_for_access_response(struct fsnotify_group *group, re->fd = fd; mutex_lock(&group->fanotify_data.access_mutex); - - if (atomic_read(&group->fanotify_data.bypass_perm)) { - mutex_unlock(&group->fanotify_data.access_mutex); - kmem_cache_free(fanotify_response_event_cache, re); - FANOTIFY_E(event)->response = FAN_ALLOW; - return 0; - } - list_add_tail(&re->list, &group->fanotify_data.access_list); mutex_unlock(&group->fanotify_data.access_mutex);