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Re: [PATCH 2/1 V2] xfs: remove extraneous buffer flag changes

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: [PATCH 2/1 V2] xfs: remove extraneous buffer flag changes
From: Carlos Maiolino <cmaiolino@xxxxxxxxxx>
Date: Tue, 19 Jul 2016 09:57:05 +0200
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <929bf9d2-968d-6c4a-bca6-24ffc0c54702@xxxxxxxxxxx>
Mail-followup-to: Eric Sandeen <sandeen@xxxxxxxxxxx>, xfs@xxxxxxxxxxx
References: <9810c6bf-9fd7-bf41-13ab-a96bec861457@xxxxxxxxxx> <929bf9d2-968d-6c4a-bca6-24ffc0c54702@xxxxxxxxxxx>
User-agent: Mutt/1.6.1 (2016-04-27)
On Fri, Jul 08, 2016 at 11:28:02PM -0500, Eric Sandeen wrote:
> Fix up a couple places where extra flag manipulation occurs.
> 
> In the first case we clear XBF_ASYNC and then immediately
> reset it - so don't bother clearing in the first place.
> 
> In the 2nd case we are at a point in the function where the
> buffer must already be async, so there is no need to reset it.
> 
> Add consistent spacing around the " | " while we're at it.
> 
> Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>

This makes sense too.

Reviewed-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx>

> ---
> 
> V2: fix subject, sorry!
> 
> diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
> index e71cfbd..5d52e44 100644
> --- a/fs/xfs/xfs_buf.c
> +++ b/fs/xfs/xfs_buf.c
> @@ -1816,7 +1816,7 @@ __xfs_buf_delwri_submit(
>  
>       blk_start_plug(&plug);
>       list_for_each_entry_safe(bp, n, io_list, b_list) {
> -             bp->b_flags &= ~(_XBF_DELWRI_Q | XBF_ASYNC | XBF_WRITE_FAIL);
> +             bp->b_flags &= ~(_XBF_DELWRI_Q | XBF_WRITE_FAIL);
>               bp->b_flags |= XBF_WRITE | XBF_ASYNC;
>  
>               /*
> diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
> index 3425799..6a2f429 100644
> --- a/fs/xfs/xfs_buf_item.c
> +++ b/fs/xfs/xfs_buf_item.c
> @@ -1080,10 +1080,9 @@ xfs_buf_iodone_callback_error(
>        * async write failure at least once, but we also need to set the buffer
>        * up to behave correctly now for repeated failures.
>        */
> -     if (!(bp->b_flags & (XBF_STALE|XBF_WRITE_FAIL)) ||
> +     if (!(bp->b_flags & (XBF_STALE | XBF_WRITE_FAIL)) ||
>            bp->b_last_error != bp->b_error) {
> -             bp->b_flags |= (XBF_WRITE | XBF_ASYNC |
> -                             XBF_DONE | XBF_WRITE_FAIL);
> +             bp->b_flags |= (XBF_WRITE | XBF_DONE | XBF_WRITE_FAIL);
>               bp->b_last_error = bp->b_error;
>               bp->b_retries = 0;
>               bp->b_first_retry_time = jiffies;
> 
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> 
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-- 
Carlos

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