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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-06-28 17:49:31 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-07-23 10:02:10 +0900
commit60f46b7efc1d6b980511c2644cb89903062f6e98 (patch)
tree6a0093650f858279db262c3b39de721bf3b20098 /fs/nilfs2
parentc8a11c8a1455c380286cfd3d3442e2b60edee49a (diff)
downloadlinux-60f46b7efc1d6b980511c2644cb89903062f6e98.tar.bz2
nilfs2: separate function that updates log position
This moves out section that updates information of the recent log position stored in super blocks from nilfs_commit_super to a new routine named nilfs_set_log_cursor. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2')
-rw-r--r--fs/nilfs2/nilfs.h2
-rw-r--r--fs/nilfs2/super.c30
2 files changed, 19 insertions, 13 deletions
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index 469541711a1f..6718616183b7 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -270,6 +270,8 @@ extern struct nilfs_super_block *
nilfs_read_super_block(struct super_block *, u64, int, struct buffer_head **);
extern int nilfs_store_magic_and_option(struct super_block *,
struct nilfs_super_block *, char *);
+extern void nilfs_set_log_cursor(struct nilfs_super_block *,
+ struct the_nilfs *);
extern int nilfs_commit_super(struct nilfs_sb_info *, int);
extern int nilfs_cleanup_super(struct nilfs_sb_info *);
extern int nilfs_attach_checkpoint(struct nilfs_sb_info *, __u64);
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 4a85dfb70b8e..c5328c8ba1d2 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -237,13 +237,27 @@ static int nilfs_sync_super(struct nilfs_sb_info *sbi, int dupsb)
return err;
}
+void nilfs_set_log_cursor(struct nilfs_super_block *sbp,
+ struct the_nilfs *nilfs)
+{
+ sector_t nfreeblocks;
+
+ /* nilfs->ns_sem must be locked by the caller. */
+ nilfs_count_free_blocks(nilfs, &nfreeblocks);
+ sbp->s_free_blocks_count = cpu_to_le64(nfreeblocks);
+
+ spin_lock(&nilfs->ns_last_segment_lock);
+ sbp->s_last_seq = cpu_to_le64(nilfs->ns_last_seq);
+ sbp->s_last_pseg = cpu_to_le64(nilfs->ns_last_pseg);
+ sbp->s_last_cno = cpu_to_le64(nilfs->ns_last_cno);
+ spin_unlock(&nilfs->ns_last_segment_lock);
+}
+
int nilfs_commit_super(struct nilfs_sb_info *sbi, int dupsb)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
struct nilfs_super_block **sbp = nilfs->ns_sbp;
- sector_t nfreeblocks;
time_t t;
- int err;
/* nilfs->sem must be locked by the caller. */
if (sbp[0]->s_magic != cpu_to_le16(NILFS_SUPER_MAGIC)) {
@@ -255,20 +269,10 @@ int nilfs_commit_super(struct nilfs_sb_info *sbi, int dupsb)
return -EIO;
}
}
- err = nilfs_count_free_blocks(nilfs, &nfreeblocks);
- if (unlikely(err)) {
- printk(KERN_ERR "NILFS: failed to count free blocks\n");
- return err;
- }
- spin_lock(&nilfs->ns_last_segment_lock);
- sbp[0]->s_last_seq = cpu_to_le64(nilfs->ns_last_seq);
- sbp[0]->s_last_pseg = cpu_to_le64(nilfs->ns_last_pseg);
- sbp[0]->s_last_cno = cpu_to_le64(nilfs->ns_last_cno);
- spin_unlock(&nilfs->ns_last_segment_lock);
+ nilfs_set_log_cursor(sbp[0], nilfs);
t = get_seconds();
nilfs->ns_sbwtime[0] = t;
- sbp[0]->s_free_blocks_count = cpu_to_le64(nfreeblocks);
sbp[0]->s_wtime = cpu_to_le64(t);
sbp[0]->s_sum = 0;
sbp[0]->s_sum = cpu_to_le32(crc32_le(nilfs->ns_crc_seed,