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Message-id: <021801d0dc10$a4d36810$ee7a3830$@samsung.com>
Date: Fri, 21 Aug 2015 20:54:44 +0800
From: Chao Yu <chao2.yu@...sung.com>
To: 'Jaegeuk Kim' <jaegeuk@...nel.org>
Cc: linux-f2fs-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org
Subject: RE: [PATCH 9/9] f2fs: update extent tree in batches
Hi Jaegeuk,
> -----Original Message-----
> From: Jaegeuk Kim [mailto:jaegeuk@...nel.org]
> Sent: Friday, August 21, 2015 1:48 AM
> To: Chao Yu
> Cc: linux-f2fs-devel@...ts.sourceforge.net; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH 9/9] f2fs: update extent tree in batches
>
> Hi Chao,
>
> On Wed, Aug 19, 2015 at 07:21:48PM +0800, Chao Yu wrote:
> > This patch introduce a new helper f2fs_update_extent_tree_range
> > which can update extent nodes in extent tree in batches.
> >
> > Now, we use the function to invalidate blocks in batches instead of
> > invalidating them one by one when truncating blocks.
>
> IMO, it's not clear the benefit of this patch in terms of performance and code
> readability versus risky code changes.
This is only used in truncate path, IMO, in theory, we can gain benefit from
this batch mode operation when truncating frequently.
I will test the patch for numbers.
Thanks,
--
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