From: Brian Foster <bfoster@redhat.com>
To: Dave Chinner <david@fromorbit.com>
Cc: linux-xfs@vger.kernel.org, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 06/26] xfs: synchronous AIL pushing
Date: Fri, 11 Oct 2019 08:40:05 -0400
Message-ID: <20191011124005.GF61257@bfoster> (raw)
In-Reply-To: <20191009032124.10541-7-david@fromorbit.com>
On Wed, Oct 09, 2019 at 02:21:04PM +1100, Dave Chinner wrote:
> From: Dave Chinner <dchinner@redhat.com>
>
> Factor the common AIL deletion code that does all the wakeups into a
> helper so we only have one copy of this somewhat tricky code to
> interface with all the wakeups necessary when the LSN of the log
> tail changes.
>
> Signed-off-by: Dave Chinner <dchinner@redhat.com>
> ---
The patch title looks bogus considering this is a refactoring patch.
Otherwise looks fine..
Brian
> fs/xfs/xfs_inode_item.c | 12 +----------
> fs/xfs/xfs_trans_ail.c | 48 ++++++++++++++++++++++-------------------
> fs/xfs/xfs_trans_priv.h | 4 +++-
> 3 files changed, 30 insertions(+), 34 deletions(-)
>
> diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
> index bb8f076805b9..ab12e526540a 100644
> --- a/fs/xfs/xfs_inode_item.c
> +++ b/fs/xfs/xfs_inode_item.c
> @@ -743,17 +743,7 @@ xfs_iflush_done(
> xfs_clear_li_failed(blip);
> }
> }
> -
> - if (mlip_changed) {
> - if (!XFS_FORCED_SHUTDOWN(ailp->ail_mount))
> - xlog_assign_tail_lsn_locked(ailp->ail_mount);
> - if (list_empty(&ailp->ail_head))
> - wake_up_all(&ailp->ail_empty);
> - }
> - spin_unlock(&ailp->ail_lock);
> -
> - if (mlip_changed)
> - xfs_log_space_wake(ailp->ail_mount);
> + xfs_ail_update_finish(ailp, mlip_changed);
> }
>
> /*
> diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
> index 6ccfd75d3c24..656819523bbd 100644
> --- a/fs/xfs/xfs_trans_ail.c
> +++ b/fs/xfs/xfs_trans_ail.c
> @@ -678,6 +678,27 @@ xfs_ail_push_all_sync(
> finish_wait(&ailp->ail_empty, &wait);
> }
>
> +void
> +xfs_ail_update_finish(
> + struct xfs_ail *ailp,
> + bool do_tail_update) __releases(ailp->ail_lock)
> +{
> + struct xfs_mount *mp = ailp->ail_mount;
> +
> + if (!do_tail_update) {
> + spin_unlock(&ailp->ail_lock);
> + return;
> + }
> +
> + if (!XFS_FORCED_SHUTDOWN(mp))
> + xlog_assign_tail_lsn_locked(mp);
> +
> + if (list_empty(&ailp->ail_head))
> + wake_up_all(&ailp->ail_empty);
> + spin_unlock(&ailp->ail_lock);
> + xfs_log_space_wake(mp);
> +}
> +
> /*
> * xfs_trans_ail_update - bulk AIL insertion operation.
> *
> @@ -737,15 +758,7 @@ xfs_trans_ail_update_bulk(
> if (!list_empty(&tmp))
> xfs_ail_splice(ailp, cur, &tmp, lsn);
>
> - if (mlip_changed) {
> - if (!XFS_FORCED_SHUTDOWN(ailp->ail_mount))
> - xlog_assign_tail_lsn_locked(ailp->ail_mount);
> - spin_unlock(&ailp->ail_lock);
> -
> - xfs_log_space_wake(ailp->ail_mount);
> - } else {
> - spin_unlock(&ailp->ail_lock);
> - }
> + xfs_ail_update_finish(ailp, mlip_changed);
> }
>
> bool
> @@ -789,10 +802,10 @@ void
> xfs_trans_ail_delete(
> struct xfs_ail *ailp,
> struct xfs_log_item *lip,
> - int shutdown_type) __releases(ailp->ail_lock)
> + int shutdown_type)
> {
> struct xfs_mount *mp = ailp->ail_mount;
> - bool mlip_changed;
> + bool need_update;
>
> if (!test_bit(XFS_LI_IN_AIL, &lip->li_flags)) {
> spin_unlock(&ailp->ail_lock);
> @@ -805,17 +818,8 @@ xfs_trans_ail_delete(
> return;
> }
>
> - mlip_changed = xfs_ail_delete_one(ailp, lip);
> - if (mlip_changed) {
> - if (!XFS_FORCED_SHUTDOWN(mp))
> - xlog_assign_tail_lsn_locked(mp);
> - if (list_empty(&ailp->ail_head))
> - wake_up_all(&ailp->ail_empty);
> - }
> -
> - spin_unlock(&ailp->ail_lock);
> - if (mlip_changed)
> - xfs_log_space_wake(ailp->ail_mount);
> + need_update = xfs_ail_delete_one(ailp, lip);
> + xfs_ail_update_finish(ailp, need_update);
> }
>
> int
> diff --git a/fs/xfs/xfs_trans_priv.h b/fs/xfs/xfs_trans_priv.h
> index 2e073c1c4614..64ffa746730e 100644
> --- a/fs/xfs/xfs_trans_priv.h
> +++ b/fs/xfs/xfs_trans_priv.h
> @@ -92,8 +92,10 @@ xfs_trans_ail_update(
> }
>
> bool xfs_ail_delete_one(struct xfs_ail *ailp, struct xfs_log_item *lip);
> +void xfs_ail_update_finish(struct xfs_ail *ailp, bool do_tail_update)
> + __releases(ailp->ail_lock);
> void xfs_trans_ail_delete(struct xfs_ail *ailp, struct xfs_log_item *lip,
> - int shutdown_type) __releases(ailp->ail_lock);
> + int shutdown_type);
>
> static inline void
> xfs_trans_ail_remove(
> --
> 2.23.0.rc1
>
next prev parent reply index
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-09 3:20 [PATCH V2 00/26] mm, xfs: non-blocking inode reclaim Dave Chinner
2019-10-09 3:20 ` [PATCH 01/26] xfs: Lower CIL flush limit for large logs Dave Chinner
2019-10-11 12:39 ` Brian Foster
2019-10-30 17:08 ` Darrick J. Wong
2019-10-09 3:21 ` [PATCH 02/26] xfs: Throttle commits on delayed background CIL push Dave Chinner
2019-10-11 12:38 ` Brian Foster
2019-10-09 3:21 ` [PATCH 03/26] xfs: don't allow log IO to be throttled Dave Chinner
2019-10-11 9:35 ` Christoph Hellwig
2019-10-11 12:39 ` Brian Foster
2019-10-30 17:14 ` Darrick J. Wong
2019-10-09 3:21 ` [PATCH 04/26] xfs: Improve metadata buffer reclaim accountability Dave Chinner
2019-10-11 12:39 ` Brian Foster
2019-10-11 12:57 ` Christoph Hellwig
2019-10-11 23:14 ` Dave Chinner
2019-10-11 23:13 ` Dave Chinner
2019-10-12 12:05 ` Brian Foster
2019-10-13 3:14 ` Dave Chinner
2019-10-14 13:05 ` Brian Foster
2019-10-30 17:25 ` Darrick J. Wong
2019-10-30 21:43 ` Dave Chinner
2019-10-31 3:06 ` Darrick J. Wong
2019-10-31 20:50 ` Dave Chinner
2019-10-31 21:05 ` Darrick J. Wong
2019-10-31 21:22 ` Christoph Hellwig
2019-11-03 21:26 ` Dave Chinner
2019-11-04 23:08 ` Darrick J. Wong
2019-10-09 3:21 ` [PATCH 05/26] xfs: correctly acount for reclaimable slabs Dave Chinner
2019-10-11 12:39 ` Brian Foster
2019-10-30 17:16 ` Darrick J. Wong
2019-10-09 3:21 ` [PATCH 06/26] xfs: synchronous AIL pushing Dave Chinner
2019-10-11 9:42 ` Christoph Hellwig
2019-10-11 12:40 ` Brian Foster [this message]
2019-10-11 23:15 ` Dave Chinner
2019-10-09 3:21 ` [PATCH 07/26] xfs: tail updates only need to occur when LSN changes Dave Chinner
2019-10-11 9:50 ` Christoph Hellwig
2019-10-11 12:40 ` Brian Foster
2019-10-09 3:21 ` [PATCH 08/26] mm: directed shrinker work deferral Dave Chinner
2019-10-14 8:46 ` Christoph Hellwig
2019-10-14 13:06 ` Brian Foster
2019-10-18 7:59 ` Dave Chinner
2019-10-09 3:21 ` [PATCH 09/26] shrinkers: use defer_work for GFP_NOFS sensitive shrinkers Dave Chinner
2019-10-09 3:21 ` [PATCH 10/26] mm: factor shrinker work calculations Dave Chinner
2019-10-09 3:21 ` [PATCH 11/26] shrinker: defer work only to kswapd Dave Chinner
2019-10-09 3:21 ` [PATCH 12/26] shrinker: clean up variable types and tracepoints Dave Chinner
2019-10-09 3:21 ` [PATCH 13/26] mm: reclaim_state records pages reclaimed, not slabs Dave Chinner
2019-10-09 3:21 ` [PATCH 14/26] mm: back off direct reclaim on excessive shrinker deferral Dave Chinner
2019-10-11 16:21 ` Matthew Wilcox
2019-10-11 23:20 ` Dave Chinner
2019-10-09 3:21 ` [PATCH 15/26] mm: kswapd backoff for shrinkers Dave Chinner
2019-10-09 3:21 ` [PATCH 16/26] xfs: synchronous AIL pushing Dave Chinner
2019-10-11 10:18 ` Christoph Hellwig
2019-10-11 15:29 ` Brian Foster
2019-10-11 23:27 ` Dave Chinner
2019-10-12 12:08 ` Brian Foster
2019-10-09 3:21 ` [PATCH 17/26] xfs: don't block kswapd in inode reclaim Dave Chinner
2019-10-11 15:29 ` Brian Foster
2019-10-09 3:21 ` [PATCH 18/26] xfs: reduce kswapd blocking on inode locking Dave Chinner
2019-10-11 10:29 ` Christoph Hellwig
2019-10-09 3:21 ` [PATCH 19/26] xfs: kill background reclaim work Dave Chinner
2019-10-11 10:31 ` Christoph Hellwig
2019-10-09 3:21 ` [PATCH 20/26] xfs: use AIL pushing for inode reclaim IO Dave Chinner
2019-10-11 17:38 ` Brian Foster
2019-10-09 3:21 ` [PATCH 21/26] xfs: remove mode from xfs_reclaim_inodes() Dave Chinner
2019-10-11 10:39 ` Christoph Hellwig
2019-10-14 13:07 ` Brian Foster
2019-10-09 3:21 ` [PATCH 22/26] xfs: track reclaimable inodes using a LRU list Dave Chinner
2019-10-11 10:42 ` Christoph Hellwig
2019-10-14 13:07 ` Brian Foster
2019-10-09 3:21 ` [PATCH 23/26] xfs: reclaim inodes from the LRU Dave Chinner
2019-10-11 10:56 ` Christoph Hellwig
2019-10-30 23:25 ` Dave Chinner
2019-10-09 3:21 ` [PATCH 24/26] xfs: remove unusued old inode reclaim code Dave Chinner
2019-10-09 3:21 ` [PATCH 25/26] xfs: rework unreferenced inode lookups Dave Chinner
2019-10-11 12:55 ` Christoph Hellwig
2019-10-11 13:39 ` Peter Zijlstra
2019-10-11 23:38 ` Dave Chinner
2019-10-14 13:07 ` Brian Foster
2019-10-17 1:24 ` Dave Chinner
2019-10-17 7:57 ` Brian Foster
2019-10-18 20:29 ` Dave Chinner
2019-10-09 3:21 ` [PATCH 26/26] xfs: use xfs_ail_push_all_sync in xfs_reclaim_inodes Dave Chinner
2019-10-11 9:55 ` Christoph Hellwig
2019-10-09 7:06 ` [PATCH V2 00/26] mm, xfs: non-blocking inode reclaim Christoph Hellwig
2019-10-11 19:03 ` Josef Bacik
2019-10-11 23:48 ` Dave Chinner
2019-10-12 0:19 ` Josef Bacik
2019-10-12 0:48 ` Dave Chinner
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