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| author | Jiro SEKIBA <jir@unicus.jp> | 2009-07-23 01:33:49 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-09-14 18:27:14 +0900 |
| commit | 1dfa27105a6cf4171c439fd40a004a0a17838115 (patch) | |
| tree | 7d348398a9e623324ca86eafd050b8c12abf3cea /fs/nilfs2/segment.c | |
| parent | 79efdd94111f30c373fce05e4e5822d8ff671c2a (diff) | |
| download | op-kernel-dev-1dfa27105a6cf4171c439fd40a004a0a17838115.zip op-kernel-dev-1dfa27105a6cf4171c439fd40a004a0a17838115.tar.gz | |
nilfs2: stop using periodic write_super callback
This removes nilfs_write_super and commit super block in nilfs
internal thread, instead of periodic write_super callback.
VFS layer calls ->write_super callback periodically. However,
it looks like that calling back is ommited when disk I/O is busy.
And when cleanerd (nilfs GC) is runnig, disk I/O tend to be busy thus
nilfs superblock is not synchronized as nilfs designed.
To avoid it, syncing superblock by nilfs thread instead of pdflush.
Signed-off-by: Jiro SEKIBA <jir@unicus.jp>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/segment.c')
| -rw-r--r-- | fs/nilfs2/segment.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index 51ff3d0..683df89 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -2501,7 +2501,8 @@ static int nilfs_segctor_construct(struct nilfs_sc_info *sci, if (test_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags) && nilfs_discontinued(nilfs)) { down_write(&nilfs->ns_sem); - req->sb_err = nilfs_commit_super(sbi, 0); + req->sb_err = nilfs_commit_super(sbi, + nilfs_altsb_need_update(nilfs)); up_write(&nilfs->ns_sem); } } @@ -2689,6 +2690,7 @@ static int nilfs_segctor_thread(void *arg) } else { DEFINE_WAIT(wait); int should_sleep = 1; + struct the_nilfs *nilfs; prepare_to_wait(&sci->sc_wait_daemon, &wait, TASK_INTERRUPTIBLE); @@ -2709,6 +2711,9 @@ static int nilfs_segctor_thread(void *arg) finish_wait(&sci->sc_wait_daemon, &wait); timeout = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) && time_after_eq(jiffies, sci->sc_timer->expires)); + nilfs = sci->sc_sbi->s_nilfs; + if (sci->sc_super->s_dirt && nilfs_sb_need_update(nilfs)) + set_nilfs_discontinued(nilfs); } goto loop; |
