From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 4/7] xfs: Sort delayed write buffers before dispatch
Date: Tue, 26 Jan 2010 15:13:17 +1100 [thread overview]
Message-ID: <20100126041317.GB15853@discord.disaster> (raw)
In-Reply-To: <20100125120054.GE8595@infradead.org>
On Mon, Jan 25, 2010 at 07:00:54AM -0500, Christoph Hellwig wrote:
> > @@ -1937,42 +1967,46 @@ xfs_flush_buftarg(
> > xfs_buftarg_t *target,
> > int wait)
> > {
> > - struct list_head tmp;
> > - xfs_buf_t *bp, *n;
> > + xfs_buf_t *bp;
> > int pincount = 0;
> > + LIST_HEAD(tmp_list);
> > + LIST_HEAD(wait_list);
> >
> > xfs_buf_runall_queues(xfsconvertd_workqueue);
> > xfs_buf_runall_queues(xfsdatad_workqueue);
> > xfs_buf_runall_queues(xfslogd_workqueue);
> >
> > set_bit(XBT_FORCE_FLUSH, &target->bt_flags);
> > - pincount = xfs_buf_delwri_split(target, &tmp, 0);
> > + pincount = xfs_buf_delwri_split(target, &tmp_list, 0);
> >
> > /*
> > - * Dropped the delayed write list lock, now walk the temporary list
> > + * Dropped the delayed write list lock, now walk the temporary list.
> > + * All I/O is issued async and then if we need to wait for completion
> > + * we do that after issuing all the IO.
> > */
> > - list_for_each_entry_safe(bp, n, &tmp, b_list) {
> > + list_sort(NULL, &tmp_list, xfs_buf_cmp);
> > + while (!list_empty(&tmp_list)) {
> > + struct xfs_buf *bp;
>
> This now has a bp variable both in functionp-wide scope and a local one
> here. Might be worth to decide for either style.
I removed the second declaration.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2010-01-26 4:12 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-25 6:22 [PATCH 0/7] Delayed write metadata writeback V3 Dave Chinner
2010-01-25 6:22 ` [PATCH 1/7] xfs: Make inode reclaim states explicit Dave Chinner
2010-01-25 11:47 ` Christoph Hellwig
2010-01-25 6:22 ` [PATCH 2/7] xfs: Use delayed write for inodes rather than async Dave Chinner
2010-01-25 11:53 ` Christoph Hellwig
2010-01-25 22:31 ` Dave Chinner
2010-01-26 7:28 ` Dave Chinner
2010-01-26 16:10 ` Christoph Hellwig
2010-02-01 22:59 ` Dave Chinner
2010-01-25 15:29 ` Christoph Hellwig
2010-01-25 6:22 ` [PATCH 3/7] xfs: Don't issue buffer IO direct from AIL push Dave Chinner
2010-01-25 11:59 ` Christoph Hellwig
2010-01-25 6:22 ` [PATCH 4/7] xfs: Sort delayed write buffers before dispatch Dave Chinner
2010-01-25 12:00 ` Christoph Hellwig
2010-01-26 4:13 ` Dave Chinner [this message]
2010-01-25 6:22 ` [PATCH 5/7] xfs: Use delay write promotion for dquot flushing Dave Chinner
2010-01-25 12:03 ` Christoph Hellwig
2010-01-25 6:22 ` [PATCH 6/7] xfs: kill the unused XFS_QMOPT_* flush flags Dave Chinner
2010-01-25 12:04 ` Christoph Hellwig
2010-01-25 6:22 ` [PATCH 7/7] xfs: xfs_fs_write_inode() can fail to write inodes synchronously Dave Chinner
2010-01-25 16:03 ` Christoph Hellwig
2010-01-26 4:51 ` Dave Chinner
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