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| author | David Sterba <dsterba@suse.com> | 2017-02-14 18:03:49 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-02-28 14:26:07 +0100 |
| commit | 9ed573674ae607bc616c804657bfaf5b6ea5889d (patch) | |
| tree | ba1978abe3ea592908192ef6570d655165cb002e /fs/btrfs | |
| parent | da353f6b30bc02da29b54f5f024039698fbd23f4 (diff) | |
| download | linux-9ed573674ae607bc616c804657bfaf5b6ea5889d.tar.gz linux-9ed573674ae607bc616c804657bfaf5b6ea5889d.tar.bz2 linux-9ed573674ae607bc616c804657bfaf5b6ea5889d.zip | |
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: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/disk-io.c | 4 | ||||
| -rw-r--r-- | fs/btrfs/disk-io.h | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index a53ff3bff8eb..67d663ab658a 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -265,7 +265,7 @@ out: 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); diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h index 0be2d4fe705b..2e0ec29bfd69 100644 --- a/fs/btrfs/disk-io.h +++ b/fs/btrfs/disk-io.h @@ -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); |