The patch titled Subject: ipc/mqueue: remove unnecessary rb_init_node() calls has been removed from the -mm tree. Its filename was ipc-mqueue-remove-unnecessary-rb_init_node-calls.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Michel Lespinasse <walken@xxxxxxxxxx> Subject: ipc/mqueue: remove unnecessary rb_init_node() calls d6629859 ("ipc/mqueue: improve performance of send/recv") and ce2d52cc ("ipc/mqueue: add rbtree node caching support") introduced an rbtree of message priorities, and usage of rb_init_node() to initialize the corresponding nodes. As it turns out, rb_init_node() is unnecessary here, as the nodes are fully initialized on insertion by rb_link_node() and the code doesn't access nodes that aren't inserted on the rbtree. Removing the rb_init_node() calls as I removed that function during rbtree API cleanups (the only other use of it was in a place that similarly didn't require it). Signed-off-by: Michel Lespinasse <walken@xxxxxxxxxx> Acked-by: Doug Ledford <dledford@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- ipc/mqueue.c | 3 --- 1 file changed, 3 deletions(-) diff -puN ipc/mqueue.c~ipc-mqueue-remove-unnecessary-rb_init_node-calls ipc/mqueue.c --- a/ipc/mqueue.c~ipc-mqueue-remove-unnecessary-rb_init_node-calls +++ a/ipc/mqueue.c @@ -142,7 +142,6 @@ static int msg_insert(struct msg_msg *ms leaf = kmalloc(sizeof(*leaf), GFP_ATOMIC); if (!leaf) return -ENOMEM; - rb_init_node(&leaf->rb_node); INIT_LIST_HEAD(&leaf->msg_list); info->qsize += sizeof(*leaf); } @@ -1013,7 +1012,6 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqd if (!info->node_cache && new_leaf) { /* Save our speculative allocation into the cache */ - rb_init_node(&new_leaf->rb_node); INIT_LIST_HEAD(&new_leaf->msg_list); info->node_cache = new_leaf; info->qsize += sizeof(*new_leaf); @@ -1121,7 +1119,6 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, if (!info->node_cache && new_leaf) { /* Save our speculative allocation into the cache */ - rb_init_node(&new_leaf->rb_node); INIT_LIST_HEAD(&new_leaf->msg_list); info->node_cache = new_leaf; info->qsize += sizeof(*new_leaf); _ Patches currently in -mm which might be from walken@xxxxxxxxxx are origin.patch prio_tree-remove-fix.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html