diff options
| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-03-22 17:50:38 +0100 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-05-10 04:32:30 +0200 |
| commit | aaed1d5bfac459ead9aaad324e7fe3326250f50a (patch) | |
| tree | 389f305354db9a45a482ff38e5f0ffab030c76bd /fs/nilfs2/segbuf.c | |
| parent | nilfs2: move pointer to super root block into logs (diff) | |
| download | linux-aaed1d5bfac459ead9aaad324e7fe3326250f50a.tar.xz linux-aaed1d5bfac459ead9aaad324e7fe3326250f50a.zip | |
nilfs2: move out checksum routines to segment buffer code
This moves out checksum routines in log writer to segbuf.c for
cleanup.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/segbuf.c')
| -rw-r--r-- | fs/nilfs2/segbuf.c | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c index a24ca9cc6afb..6bf3b1f3406e 100644 --- a/fs/nilfs2/segbuf.c +++ b/fs/nilfs2/segbuf.c @@ -202,8 +202,8 @@ void nilfs_segbuf_fill_in_segsum(struct nilfs_segment_buffer *segbuf) /* * CRC calculation routines */ -void nilfs_segbuf_fill_in_segsum_crc(struct nilfs_segment_buffer *segbuf, - u32 seed) +static void +nilfs_segbuf_fill_in_segsum_crc(struct nilfs_segment_buffer *segbuf, u32 seed) { struct buffer_head *bh; struct nilfs_segment_summary *raw_sum; @@ -230,8 +230,8 @@ void nilfs_segbuf_fill_in_segsum_crc(struct nilfs_segment_buffer *segbuf, raw_sum->ss_sumsum = cpu_to_le32(crc); } -void nilfs_segbuf_fill_in_data_crc(struct nilfs_segment_buffer *segbuf, - u32 seed) +static void nilfs_segbuf_fill_in_data_crc(struct nilfs_segment_buffer *segbuf, + u32 seed) { struct buffer_head *bh; struct nilfs_segment_summary *raw_sum; @@ -257,6 +257,20 @@ void nilfs_segbuf_fill_in_data_crc(struct nilfs_segment_buffer *segbuf, raw_sum->ss_datasum = cpu_to_le32(crc); } +static void +nilfs_segbuf_fill_in_super_root_crc(struct nilfs_segment_buffer *segbuf, + u32 seed) +{ + struct nilfs_super_root *raw_sr; + u32 crc; + + raw_sr = (struct nilfs_super_root *)segbuf->sb_super_root->b_data; + crc = crc32_le(seed, + (unsigned char *)raw_sr + sizeof(raw_sr->sr_sum), + NILFS_SR_BYTES - sizeof(raw_sr->sr_sum)); + raw_sr->sr_sum = cpu_to_le32(crc); +} + static void nilfs_release_buffers(struct list_head *list) { struct buffer_head *bh, *n; @@ -336,6 +350,23 @@ int nilfs_wait_on_logs(struct list_head *logs) return ret; } +/** + * nilfs_add_checksums_on_logs - add checksums on the logs + * @logs: list of segment buffers storing target logs + * @seed: checksum seed value + */ +void nilfs_add_checksums_on_logs(struct list_head *logs, u32 seed) +{ + struct nilfs_segment_buffer *segbuf; + + list_for_each_entry(segbuf, logs, sb_list) { + if (segbuf->sb_super_root) + nilfs_segbuf_fill_in_super_root_crc(segbuf, seed); + nilfs_segbuf_fill_in_segsum_crc(segbuf, seed); + nilfs_segbuf_fill_in_data_crc(segbuf, seed); + } +} + /* * BIO operations */ |