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Date: Tue, 14 Jan 2014 09:19:35 +0900 From: Minchan Kim <minchan@...nel.org> To: Andrew Morton <akpm@...ux-foundation.org> Cc: linux-kernel@...r.kernel.org, Nitin Gupta <ngupta@...are.org>, Jerome Marchand <jmarchan@...hat.com>, Sergey Senozhatsky <sergey.senozhatsky@...il.com> Subject: Re: [PATCH 4/7] zram: use atomic operation for stat On Mon, Jan 13, 2014 at 03:58:14PM -0800, Andrew Morton wrote: > On Mon, 13 Jan 2014 20:18:59 +0900 Minchan Kim <minchan@...nel.org> wrote: > > > Some of fields in zram->stats are protected by zram->lock which > > is rather coarse-grained so let's use atomic operation without > > explict locking. > > Confused. The patch didn't remove any locking, so it made the code > slower. True but it could make remove dependency of zram->lock for 32bit stat so further patches can remove messy code and enhance write performance. So, it's preparing patch for further step. Should I rewrite the description to explain this? > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Kind regards, Minchan Kim -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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