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, 5 insertions, 8 deletions

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 85e072b956d5..3d29d60bdaf8 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -1336,7 +1336,6 @@ static void scrub_recheck_block_checksum(struct btrfs_fs_info *fs_info,
         int page_num;
         u8 calculated_csum[BTRFS_CSUM_SIZE];
         u32 crc = ~(u32)0;
-        struct btrfs_root *root = fs_info->extent_root;
         void *mapped_buffer;
 
         WARN_ON(!sblock->pagev[0]->page);
@@ -1365,12 +1364,11 @@ static void scrub_recheck_block_checksum(struct btrfs_fs_info *fs_info,
 
         for (page_num = 0;;) {
                 if (page_num == 0 && is_metadata)
-                        crc = btrfs_csum_data(root,
+                        crc = btrfs_csum_data(
                                 ((u8 *)mapped_buffer) + BTRFS_CSUM_SIZE,
                                 crc, PAGE_SIZE - BTRFS_CSUM_SIZE);
                 else
-                        crc = btrfs_csum_data(root, mapped_buffer, crc,
-                                              PAGE_SIZE);
+                        crc = btrfs_csum_data(mapped_buffer, crc, PAGE_SIZE);
 
                 kunmap_atomic(mapped_buffer);
                 page_num++;
@@ -1657,7 +1655,6 @@ static int scrub_checksum_data(struct scrub_block *sblock)
         void *buffer;
         u32 crc = ~(u32)0;
         int fail = 0;
-        struct btrfs_root *root = sctx->dev_root;
         u64 len;
         int index;
 
@@ -1674,7 +1671,7 @@ static int scrub_checksum_data(struct scrub_block *sblock)
         for (;;) {
                 u64 l = min_t(u64, len, PAGE_SIZE);
 
-                crc = btrfs_csum_data(root, buffer, crc, l);
+                crc = btrfs_csum_data(buffer, crc, l);
                 kunmap_atomic(buffer);
                 len -= l;
                 if (len == 0)
@@ -1744,7 +1741,7 @@ static int scrub_checksum_tree_block(struct scrub_block *sblock)
         for (;;) {
                 u64 l = min_t(u64, len, mapped_size);
 
-                crc = btrfs_csum_data(root, p, crc, l);
+                crc = btrfs_csum_data(p, crc, l);
                 kunmap_atomic(mapped_buffer);
                 len -= l;
                 if (len == 0)
@@ -1805,7 +1802,7 @@ static int scrub_checksum_super(struct scrub_block *sblock)
         for (;;) {
                 u64 l = min_t(u64, len, mapped_size);
 
-                crc = btrfs_csum_data(root, p, crc, l);
+                crc = btrfs_csum_data(p, crc, l);
                 kunmap_atomic(mapped_buffer);
                 len -= l;
                 if (len == 0)