提交 9ed57367 编写于 作者: D David Sterba

btrfs: constify input buffer of btrfs_csum_data

The function does not modify the input buffer, also update a typecast in
one caller.
Signed-off-by: NDavid Sterba <dsterba@suse.com>
上级 da353f6b
......@@ -265,7 +265,7 @@ static struct extent_map *btree_get_extent(struct btrfs_inode *inode,
return em;
}
u32 btrfs_csum_data(char *data, u32 seed, size_t len)
u32 btrfs_csum_data(const char *data, u32 seed, size_t len)
{
return btrfs_crc32c(seed, data, len);
}
......@@ -3448,7 +3448,7 @@ static int write_dev_supers(struct btrfs_device *device,
btrfs_set_super_bytenr(sb, bytenr);
crc = ~(u32)0;
crc = btrfs_csum_data((char *)sb +
crc = btrfs_csum_data((const char *)sb +
BTRFS_CSUM_SIZE, crc,
BTRFS_SUPER_INFO_SIZE -
BTRFS_CSUM_SIZE);
......
......@@ -116,7 +116,7 @@ void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid,
int atomic);
int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid);
u32 btrfs_csum_data(char *data, u32 seed, size_t len);
u32 btrfs_csum_data(const char *data, u32 seed, size_t len);
void btrfs_csum_final(u32 crc, u8 *result);
int btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio,
enum btrfs_wq_endio_type metadata);
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册