Btrfs: Handle data checksumming on bios that span multiple ordered extents

Data checksumming is done right before the bio is sent down the IO stack,
which means a single bio might span more than one ordered extent.  In
this case, the checksumming data is split between two ordered extents.

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

1 files changed, 1 insertions, 5 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index f37e09e724f7..4d729d90d2b8 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -351,12 +351,8 @@ int __btrfs_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
 {
         struct btrfs_root *root = BTRFS_I(inode)->root;
         int ret = 0;
-        struct btrfs_ordered_sum *sums;
 
-        ret = btrfs_csum_one_bio(root, bio, &sums);
-        BUG_ON(ret);
-
-        ret = btrfs_add_ordered_sum(inode, sums);
+        ret = btrfs_csum_one_bio(root, inode, bio);
         BUG_ON(ret);
 
         return btrfs_map_bio(root, rw, bio, mirror_num, 1);