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[PATCH 2/5] writeback: fix bdi_writeback iteration in wakeup_dirtytime_writeback()

Started byTejun Heo <tj@kernel.org>
First post2015-09-29 18:50 +0200
Last post2015-10-02 16:20 +0200
Articles 2 — 2 participants

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  [PATCH 2/5] writeback: fix bdi_writeback iteration in wakeup_dirtytime_writeback() Tejun Heo <tj@kernel.org> - 2015-09-29 18:50 +0200
    Re: [PATCH 2/5] writeback: fix bdi_writeback iteration in  wakeup_dirtytime_writeback() Jan Kara <jack@suse.cz> - 2015-10-02 16:20 +0200

#1235392 — [PATCH 2/5] writeback: fix bdi_writeback iteration in wakeup_dirtytime_writeback()

FromTejun Heo <tj@kernel.org>
Date2015-09-29 18:50 +0200
Subject[PATCH 2/5] writeback: fix bdi_writeback iteration in wakeup_dirtytime_writeback()
Message-ID<qe6gj-3Gy-29@gated-at.bofh.it>
wakeup_dirtytime_writeback() walks and wakes up all wb's of all bdi's;
unfortunately, it was always waking up bdi->wb instead of the wb being
walked.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 001fe6f617b1 ("writeback: make wakeup_dirtytime_writeback() handle multiple bdi_writeback's")
---
 fs/fs-writeback.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 091a364..d0da306 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -1897,8 +1897,8 @@ static void wakeup_dirtytime_writeback(struct work_struct *w)
 		struct wb_iter iter;
 
 		bdi_for_each_wb(wb, bdi, &iter, 0)
-			if (!list_empty(&bdi->wb.b_dirty_time))
-				wb_wakeup(&bdi->wb);
+			if (!list_empty(&wb->b_dirty_time))
+				wb_wakeup(wb);
 	}
 	rcu_read_unlock();
 	schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ);
-- 
2.4.3

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#1238317 — Re: [PATCH 2/5] writeback: fix bdi_writeback iteration in wakeup_dirtytime_writeback()

FromJan Kara <jack@suse.cz>
Date2015-10-02 16:20 +0200
SubjectRe: [PATCH 2/5] writeback: fix bdi_writeback iteration in wakeup_dirtytime_writeback()
Message-ID<qf9lM-5Mt-9@gated-at.bofh.it>
In reply to#1235392
On Tue 29-09-15 12:47:51, Tejun Heo wrote:
> wakeup_dirtytime_writeback() walks and wakes up all wb's of all bdi's;
> unfortunately, it was always waking up bdi->wb instead of the wb being
> walked.  Fix it.

Looks good. You can add:

Reviewed-by: Jan Kara <jack@suse.com>

								Honza

> 
> Signed-off-by: Tejun Heo <tj@kernel.org>
> Fixes: 001fe6f617b1 ("writeback: make wakeup_dirtytime_writeback() handle multiple bdi_writeback's")
> ---
>  fs/fs-writeback.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
> index 091a364..d0da306 100644
> --- a/fs/fs-writeback.c
> +++ b/fs/fs-writeback.c
> @@ -1897,8 +1897,8 @@ static void wakeup_dirtytime_writeback(struct work_struct *w)
>  		struct wb_iter iter;
>  
>  		bdi_for_each_wb(wb, bdi, &iter, 0)
> -			if (!list_empty(&bdi->wb.b_dirty_time))
> -				wb_wakeup(&bdi->wb);
> +			if (!list_empty(&wb->b_dirty_time))
> +				wb_wakeup(wb);
>  	}
>  	rcu_read_unlock();
>  	schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ);
> -- 
> 2.4.3
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> More majordomo info at  http://vger.kernel.org/majordomo-info.html
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-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR
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