Btrfs: cleanup unused arguments of btrfs_csum_data

Argument 'root' is no more used in btrfs_csum_data().

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 15b94089abc4..b9c565028605 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -106,7 +106,6 @@ static int check_compressed_csum(struct inode *inode,
                                  u64 disk_start)
 {
         int ret;
-        struct btrfs_root *root = BTRFS_I(inode)->root;
         struct page *page;
         unsigned long i;
         char *kaddr;
@@ -121,7 +120,7 @@ static int check_compressed_csum(struct inode *inode,
                 csum = ~(u32)0;
 
                 kaddr = kmap_atomic(page);
-                csum = btrfs_csum_data(root, kaddr, csum, PAGE_CACHE_SIZE);
+                csum = btrfs_csum_data(kaddr, csum, PAGE_CACHE_SIZE);
                 btrfs_csum_final(csum, (char *)&csum);
                 kunmap_atomic(kaddr);