btrfs: return void from csum_tree_block
Now that csum_tree_block is not returning any errors, we can make
csum_tree_block return void and simplify callers.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 6f63cc4..6b00dde 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -253,10 +253,8 @@ struct extent_map *btree_get_extent(struct btrfs_inode *inode,
/*
* Compute the csum of a btree block and store the result to provided buffer.
- *
- * Returns error if the extent buffer cannot be mapped.
*/
-static int csum_tree_block(struct extent_buffer *buf, u8 *result)
+static void csum_tree_block(struct extent_buffer *buf, u8 *result)
{
struct btrfs_fs_info *fs_info = buf->fs_info;
const int num_pages = fs_info->nodesize >> PAGE_SHIFT;
@@ -276,8 +274,6 @@ static int csum_tree_block(struct extent_buffer *buf, u8 *result)
}
memset(result, 0, BTRFS_CSUM_SIZE);
crypto_shash_final(shash, result);
-
- return 0;
}
/*
@@ -528,8 +524,7 @@ static int csum_dirty_buffer(struct btrfs_fs_info *fs_info, struct page *page)
offsetof(struct btrfs_header, fsid),
BTRFS_FSID_SIZE) == 0);
- if (csum_tree_block(eb, result))
- return -EINVAL;
+ csum_tree_block(eb, result);
if (btrfs_header_level(eb))
ret = btrfs_check_node(eb);
@@ -640,9 +635,7 @@ static int btree_readpage_end_io_hook(struct btrfs_io_bio *io_bio,
btrfs_set_buffer_lockdep_class(btrfs_header_owner(eb),
eb, found_level);
- ret = csum_tree_block(eb, result);
- if (ret)
- goto err;
+ csum_tree_block(eb, result);
if (memcmp_extent_buffer(eb, result, 0, csum_size)) {
u32 val;