linux-kernel - Re: [PATCH] tmpfs: avoid a little creat and stat slowdown

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Message-ID: <alpine.LSU.2.11.1511131645300.1539@eggly.anvils>
Date:	Fri, 13 Nov 2015 16:51:40 -0800 (PST)
From:	Hugh Dickins <hughd@...gle.com>
To:	"Huang, Ying" <ying.huang@...ux.intel.com>
cc:	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Josef Bacik <jbacik@...com>, Yu Zhao <yuzhao@...gle.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] tmpfs: avoid a little creat and stat slowdown

On Fri, 13 Nov 2015, Huang, Ying wrote:
> 
> c435a390574d is the direct parent of afa2db2fb6f1 in its original git.
> 43819159da2b is your patch applied on top of v4.3-rc7.  The comparison
> of 43819159da2b with v4.3-rc7 is as follow:
...
> So you patch improved 11.9% from its base v4.3-rc7.  I think other
> difference are caused by other changes.  Sorry for confusing.

Thanks for getting back on this: that's rather what I was hoping to hear.

Of course, no user will care which commit is responsible for a slowdown,
and we may need to look further; but I couldn't make sense of it before,
so this was a relief.

Hugh
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