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| author | Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp> | 2006-12-06 20:39:17 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 08:39:42 -0800 |
| commit | 126039256cf164f69d8cfa20f1952d00fa61f52f (patch) | |
| tree | cb0467f1d0bd7a80e10946d51a0605df3e274b74 /fs | |
| parent | 702a28b1e64be3dc313f5f0ceb6dc95edfbc5e18 (diff) | |
| download | linux-126039256cf164f69d8cfa20f1952d00fa61f52f.tar.bz2 | |
[PATCH] jbd2: wait for already submitted t_sync_datalist buffer to complete
In the current jbd code, if a buffer on BJ_SyncData list is dirty and not
locked, the buffer is refiled to BJ_Locked list, submitted to the IO and
waited for IO completion.
But the fsstress test showed the case that when a buffer was already
submitted to the IO just before the buffer_dirty(bh) check, the buffer was
not waited for IO completion.
Following patch solves this problem. If it is assumed that a buffer is
submitted to the IO before the buffer_dirty(bh) check and still being
written to disk, this buffer is refiled to BJ_Locked list.
Signed-off-by: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp>
Cc: Jan Kara <jack@ucw.cz>
Cc: "Stephen C. Tweedie" <sct@redhat.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/jbd2/commit.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 70b2ae1ef281..6bd8005e3d34 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -248,8 +248,12 @@ write_out_data: bufs = 0; goto write_out_data; } - } - else { + } else if (!locked && buffer_locked(bh)) { + __jbd2_journal_file_buffer(jh, commit_transaction, + BJ_Locked); + jbd_unlock_bh_state(bh); + put_bh(bh); + } else { BUFFER_TRACE(bh, "writeout complete: unfile"); __jbd2_journal_unfile_buffer(jh); jbd_unlock_bh_state(bh); |