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Date: Fri, 22 Dec 2006 23:55:06 -0800 From: akpm@...l.org To: hifumi.hisashi@....ntt.co.jp, jack@....cz, linux-ext4@...r.kernel.org, sct@...hat.com, mm-commits@...r.kernel.org Subject: - jbd-wait-for-already-submitted-t_sync_datalist-buffer.patch removed from -mm tree The patch titled jbd: wait for already submitted t_sync_datalist buffer to complete has been removed from the -mm tree. Its filename was jbd-wait-for-already-submitted-t_sync_datalist-buffer.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ Subject: jbd: wait for already submitted t_sync_datalist buffer to complete From: Hisashi Hifumi <hifumi.hisashi@....ntt.co.jp> 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@....ntt.co.jp> Cc: Jan Kara <jack@....cz> Cc: "Stephen C. Tweedie" <sct@...hat.com> Cc: <linux-ext4@...r.kernel.org> Signed-off-by: Andrew Morton <akpm@...l.org> --- fs/jbd/commit.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff -puN fs/jbd/commit.c~jbd-wait-for-already-submitted-t_sync_datalist-buffer fs/jbd/commit.c --- a/fs/jbd/commit.c~jbd-wait-for-already-submitted-t_sync_datalist-buffer +++ a/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); _ Patches currently in -mm which might be from hifumi.hisashi@....ntt.co.jp are origin.patch - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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