Btrfs: convert smp_mb__{before,after}_clear_bit

The new call is smp_mb__{before,after}_atomic.  The __ gives us extra
protection from the atomic rays.

Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 1c54e2eb74ab..9630f10f8e1e 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -290,7 +290,7 @@ static int record_root_in_trans(struct btrfs_trans_handle *trans,
                  * done before we pop in the zero below
                  */
                 btrfs_init_reloc_root(trans, root);
-                smp_mb__before_clear_bit();
+                smp_mb__before_atomic();
                 clear_bit(BTRFS_ROOT_IN_TRANS_SETUP, &root->state);
         }
         return 0;
@@ -1060,7 +1060,7 @@ static noinline int commit_fs_roots(struct btrfs_trans_handle *trans,
 
                         /* see comments in should_cow_block() */
                         clear_bit(BTRFS_ROOT_FORCE_COW, &root->state);
-                        smp_mb__after_clear_bit();
+                        smp_mb__after_atomic();
 
                         if (root->commit_root != root->node) {
                                 list_add_tail(&root->dirty_list,