linux-kernel - Re: [PATCH v4 2/6] mm/writeback: Don't check force_wait to handle bdi->work

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Message-ID: <20130621003103.GC11033@localhost>
Date:	Fri, 21 Jun 2013 08:31:03 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Wanpeng Li <liwanp@...ux.vnet.ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Michal Hocko <mhocko@...e.cz>,
	David Rientjes <rientjes@...gle.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Rik van Riel <riel@...hat.com>,
	Andrew Shewmaker <agshew@...il.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Namjae Jeon <linkinjeon@...il.com>, Jan Kara <jack@...e.cz>,
	Tejun Heo <tj@...nel.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/6] mm/writeback: Don't check force_wait to handle
 bdi->work_list

On Fri, Jun 21, 2013 at 07:37:25AM +0800, Wanpeng Li wrote:
> On Thu, Jun 20, 2013 at 09:46:15PM +0800, Fengguang Wu wrote:
> >>  fs/fs-writeback.c |   10 ++--------
> >>  1 files changed, 2 insertions(+), 8 deletions(-)
> >
> >The header file should be changed, too. Otherwise looks fine to me.
> >
> >include/linux/writeback.h:97:long wb_do_writeback(struct bdi_writeback *wb, int force_wait);
> 
> Thanks for your review, Fengguang. ;-)
> 
> The line in header file has already been removed by commit(836f29bbb0:
> fs/fs-writeback.c: : make wb_do_writeback() as static) in -next tree
> since there is just one caller in fs/fs-writeback.c.

Ah OK. I was reading the upstream kernel.. However it still presents a
tricky situation (for Andrew Morton) that commit 836f29bbb0 MUST be
merged before your patch in the next merge window. Otherwise it will
lead to a range of build failure commits.

Thanks,
Fengguang
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