Btrfs: Lower contention on the csum mutex

This takes the csum mutex deeper in the call chain and releases it
more often.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 33b990878d84..65107894a5bb 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -415,10 +415,8 @@ static noinline int add_pending_csums(struct btrfs_trans_handle *trans,
         btrfs_set_trans_block_group(trans, inode);
         list_for_each(cur, list) {
                 sum = list_entry(cur, struct btrfs_ordered_sum, list);
-                mutex_lock(&BTRFS_I(inode)->csum_mutex);
                 btrfs_csum_file_blocks(trans, BTRFS_I(inode)->root,
                                        inode, sum);
-                mutex_unlock(&BTRFS_I(inode)->csum_mutex);
         }
         return 0;
 }