From 6f5a9da1af5a8c286575c30c2706dc1fbef9164b Mon Sep 17 00:00:00 2001 From: Hisashi Hifumi Date: Fri, 22 Dec 2006 01:11:50 -0800 Subject: [PATCH] jbd: 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 Cc: Jan Kara Cc: "Stephen C. Tweedie" Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/jbd/commit.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'fs/jbd') diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c index 10be51290a27..be4648bc7a2f 100644 --- a/fs/jbd/commit.c +++ b/fs/jbd/commit.c @@ -248,8 +248,12 @@ write_out_data: bufs = 0; goto write_out_data; } - } - else { + } else if (!locked && buffer_locked(bh)) { + __journal_file_buffer(jh, commit_transaction, + BJ_Locked); + jbd_unlock_bh_state(bh); + put_bh(bh); + } else { BUFFER_TRACE(bh, "writeout complete: unfile"); __journal_unfile_buffer(jh); jbd_unlock_bh_state(bh); -- cgit v1.2.3