[patch 1/5] fs: make use of rcu helpers

npiggin
2009-09-15T19:25:59Z

[-- Attachment #1: fs-bdiwb-rcu-fix.patch --]
[-- Type: text/plain, Size: 670 bytes --]

list_add_tail_rcu contains required barriers.

Signed-off-by: Nick Piggin <npiggin@suse.de>
---
fs/fs-writeback.c | 5 -----
1 file changed, 5 deletions(-)

Index: linux-2.6/fs/fs-writeback.c
===================================================================
--- linux-2.6.orig/fs/fs-writeback.c
+++ linux-2.6/fs/fs-writeback.c
@@ -152,11 +152,6 @@ static void bdi_queue_work(struct backin
atomic_set(&work->pending, bdi->wb_cnt);
BUG_ON(!bdi->wb_cnt);

- /*
- * Make sure stores are seen before it appears on the list
- */
- smp_mb();
-
spin_lock(&bdi->wb_lock);
list_add_tail_rcu(&work->list, &bdi->work_list);
spin_unlock(&bdi->wb_lock);