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From: Christoph Hellwig <hch@infradead.org>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 08/14] xfs: convert log grant heads to atomic variables
Date: Wed, 1 Dec 2010 07:59:20 -0500	[thread overview]
Message-ID: <20101201125920.GF612@infradead.org> (raw)
In-Reply-To: <1290994712-21376-9-git-send-email-david@fromorbit.com>

On Mon, Nov 29, 2010 at 12:38:26PM +1100, Dave Chinner wrote:
> From: Dave Chinner <dchinner@redhat.com>
> 
> Convert the log grant heads to atomic64_t types in preparation for
> converting the accounting algorithms to atomic operations. his patch
> just converts the variables; the algorithmic changes are in a
> separate patch for clarity.
> 
> Signed-off-by: Dave Chinner <dchinner@redhat.com>
> ---
>  fs/xfs/linux-2.6/xfs_trace.h |   18 +++++++------
>  fs/xfs/xfs_log.c             |   54 +++++++++++++++++++++--------------------
>  fs/xfs/xfs_log_priv.h        |    4 +-
>  fs/xfs/xfs_log_recover.c     |    8 +++---
>  4 files changed, 44 insertions(+), 40 deletions(-)
> 
> diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h
> index d2cdc85..68c3bdd 100644
> --- a/fs/xfs/linux-2.6/xfs_trace.h
> +++ b/fs/xfs/linux-2.6/xfs_trace.h
> @@ -768,8 +768,8 @@ DECLARE_EVENT_CLASS(xfs_loggrant_class,
>  		__field(unsigned int, flags)
>  		__field(void *, reserveq)
>  		__field(void *, writeq)
> -		__field(xfs_lsn_t, grant_reserve_lsn)
> -		__field(xfs_lsn_t, grant_write_lsn)
> +		__field(xfs_lsn_t, grant_reserve_head)
> +		__field(xfs_lsn_t, grant_write_head)

What about just naming them _head from the beginning?  That would
be a tad cleaner.  Same for the actual variables in the log, even
if they change the type here.

Otherwise looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>

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  reply	other threads:[~2010-12-01 12:57 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-29  1:38 [PATCH 0/14] xfs: grant lock scaling and removal V2 Dave Chinner
2010-11-29  1:38 ` [PATCH 01/14] xfs: convert log grant ticket queues to list heads Dave Chinner
2010-11-30 22:59   ` Christoph Hellwig
2010-11-29  1:38 ` [PATCH 02/14] xfs: clean up log space grant functions Dave Chinner
2010-12-01 12:30   ` Christoph Hellwig
2010-12-02  1:48     ` Dave Chinner
2010-12-02 11:40       ` Christoph Hellwig
2010-12-03  6:45         ` Dave Chinner
2010-11-29  1:38 ` [PATCH 03/14] xfs: convert log grant heads to LSN notation Dave Chinner
2010-12-01 12:42   ` Christoph Hellwig
2010-12-02  1:49     ` Dave Chinner
2010-12-01 13:05   ` Christoph Hellwig
2010-12-02  2:01     ` Dave Chinner
2010-12-02 11:47       ` Christoph Hellwig
2010-11-29  1:38 ` [PATCH 04/14] xfs: use wait queues directly for log grant queues Dave Chinner
2010-12-01 12:34   ` Christoph Hellwig
2010-12-02  2:02     ` Dave Chinner
2010-11-29  1:38 ` [PATCH 05/14] xfs: make AIL tail pushing independent of the grant lock Dave Chinner
2010-12-01 12:45   ` Christoph Hellwig
2010-12-02  2:04     ` Dave Chinner
2010-11-29  1:38 ` [PATCH 06/14] xfs: convert l_last_sync_lsn to an atomic variable Dave Chinner
2010-12-01 12:54   ` Christoph Hellwig
2010-11-29  1:38 ` [PATCH 07/14] xfs: convert l_tail_lsn " Dave Chinner
2010-12-01 12:56   ` Christoph Hellwig
2010-11-29  1:38 ` [PATCH 08/14] xfs: convert log grant heads to atomic variables Dave Chinner
2010-12-01 12:59   ` Christoph Hellwig [this message]
2010-12-02  2:04     ` Dave Chinner
2010-11-29  1:38 ` [PATCH 09/14] xfs: introduce new locks for the log grant ticket wait queues Dave Chinner
2010-12-01 13:12   ` Christoph Hellwig
2010-12-02  2:10     ` Dave Chinner
2010-12-02 11:48       ` Christoph Hellwig
2010-11-29  1:38 ` [PATCH 10/14] xfs: convert grant head manipulations to lockless algorithm Dave Chinner
2010-12-01 13:15   ` Christoph Hellwig
2010-12-02  2:11     ` Dave Chinner
2010-11-29  1:38 ` [PATCH 11/14] xfs: remove log grant lock Dave Chinner
2010-12-01 13:15   ` Christoph Hellwig
2010-11-29  1:38 ` [PATCH 12/14] xfs: kill useless spinlock_destroy macro Dave Chinner
2010-12-01 13:19   ` Christoph Hellwig
2010-11-29  1:38 ` [PATCH 13/14] xfs: replace use of sv_t with waitqueues in the log Dave Chinner
2010-12-01 13:20   ` Christoph Hellwig
2010-11-29  1:38 ` [PATCH 14/14] xfs: remove sv wrappers Dave Chinner
2010-12-01 13:20   ` Christoph Hellwig

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