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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-04-30 18:56:12 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-05-10 22:21:44 +0900 |
| commit | 6c6de1aa65189c37cc3c9af78da756c06a99899b (patch) | |
| tree | 13f6d4a90d81357d581b80b8e400bd0b53b0a3e7 | |
| parent | 1cb2d38cb3e59d58e8321a0592e84b5761afb063 (diff) | |
| download | linux-6c6de1aa65189c37cc3c9af78da756c06a99899b.tar.gz linux-6c6de1aa65189c37cc3c9af78da756c06a99899b.tar.bz2 linux-6c6de1aa65189c37cc3c9af78da756c06a99899b.zip | |
nilfs2: super root size should change depending on inode size
The size of super root structure depends on inode size, so
NILFS_SR_BYTES macro should be a function of the inode size. This
fixes the issue.
Even though a different size value will be written for a possible
future filesystem with extended inode, but fortunately this does not
break disk format compatibility.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
| -rw-r--r-- | fs/nilfs2/segbuf.c | 5 | ||||
| -rw-r--r-- | fs/nilfs2/segment.c | 2 | ||||
| -rw-r--r-- | include/linux/nilfs2_fs.h | 2 |
3 files changed, 6 insertions, 3 deletions
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c index 410ec2b1af4f..850a7c0228fb 100644 --- a/fs/nilfs2/segbuf.c +++ b/fs/nilfs2/segbuf.c @@ -239,12 +239,15 @@ nilfs_segbuf_fill_in_super_root_crc(struct nilfs_segment_buffer *segbuf, u32 seed) { struct nilfs_super_root *raw_sr; + struct the_nilfs *nilfs = segbuf->sb_super->s_fs_info; + unsigned srsize; u32 crc; raw_sr = (struct nilfs_super_root *)segbuf->sb_super_root->b_data; + srsize = NILFS_SR_BYTES(nilfs->ns_inode_size); crc = crc32_le(seed, (unsigned char *)raw_sr + sizeof(raw_sr->sr_sum), - NILFS_SR_BYTES - sizeof(raw_sr->sr_sum)); + srsize - sizeof(raw_sr->sr_sum)); raw_sr->sr_sum = cpu_to_le32(crc); } diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index abbfab974700..8006d0cd4440 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -894,7 +894,7 @@ static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci, bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root; raw_sr = (struct nilfs_super_root *)bh_sr->b_data; - raw_sr->sr_bytes = cpu_to_le16(NILFS_SR_BYTES); + raw_sr->sr_bytes = cpu_to_le16(NILFS_SR_BYTES(isz)); raw_sr->sr_nongc_ctime = cpu_to_le64(nilfs_doing_gc() ? nilfs->ns_nongc_ctime : sci->sc_seg_ctime); diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h index 8768c469e93e..bd8678f8a421 100644 --- a/include/linux/nilfs2_fs.h +++ b/include/linux/nilfs2_fs.h @@ -107,7 +107,7 @@ struct nilfs_super_root { #define NILFS_SR_DAT_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 0) #define NILFS_SR_CPFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 1) #define NILFS_SR_SUFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 2) -#define NILFS_SR_BYTES (sizeof(struct nilfs_super_root)) +#define NILFS_SR_BYTES(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 3) /* * Maximal mount counts |