From: Rik van Riel <riel@redhat.com>
To: Weijie Yang <weijie.yang@samsung.com>, 'Mel Gorman' <mgorman@suse.de>
Cc: 'Andrew Morton' <akpm@linux-foundation.org>,
'Minchan Kim' <minchan@kernel.org>,
weijie.yang.kh@gmail.com, 'Linux-MM' <linux-mm@kvack.org>,
'linux-kernel' <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH V2 1/2] mm/vmscan: restore sc->gfp_mask after promoting it to __GFP_HIGHMEM
Date: Fri, 14 Feb 2014 09:15:45 -0500 [thread overview]
Message-ID: <52FE2511.1010004@redhat.com> (raw)
In-Reply-To: <000101cf294f$eef39610$ccdac230$%yang@samsung.com>
On 02/14/2014 01:41 AM, Weijie Yang wrote:
> We promote sc->gfp_mask to __GFP_HIGHMEM to forcibly scan highmem if
> there are too many buffer_heads pinning highmem. see: cc715d99e5
>
> This patch restores sc->gfp_mask to its caller original value after
> finishing the scan job, to avoid the impact on other invocations from
> its upper caller, such as vmpressure_prio(), shrink_slab().
>
> Signed-off-by: Weijie Yang <weijie.yang@samsung.com>
Acked-by: Rik van Riel <riel@redhat.com>
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WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Weijie Yang <weijie.yang@samsung.com>, "'Mel Gorman'" <mgorman@suse.de>
Cc: "'Andrew Morton'" <akpm@linux-foundation.org>,
"'Minchan Kim'" <minchan@kernel.org>,
weijie.yang.kh@gmail.com, "'Linux-MM'" <linux-mm@kvack.org>,
"'linux-kernel'" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH V2 1/2] mm/vmscan: restore sc->gfp_mask after promoting it to __GFP_HIGHMEM
Date: Fri, 14 Feb 2014 09:15:45 -0500 [thread overview]
Message-ID: <52FE2511.1010004@redhat.com> (raw)
In-Reply-To: <000101cf294f$eef39610$ccdac230$%yang@samsung.com>
On 02/14/2014 01:41 AM, Weijie Yang wrote:
> We promote sc->gfp_mask to __GFP_HIGHMEM to forcibly scan highmem if
> there are too many buffer_heads pinning highmem. see: cc715d99e5
>
> This patch restores sc->gfp_mask to its caller original value after
> finishing the scan job, to avoid the impact on other invocations from
> its upper caller, such as vmpressure_prio(), shrink_slab().
>
> Signed-off-by: Weijie Yang <weijie.yang@samsung.com>
Acked-by: Rik van Riel <riel@redhat.com>
--
All rights reversed
next prev parent reply other threads:[~2014-02-14 14:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-14 6:41 [PATCH V2 1/2] mm/vmscan: restore sc->gfp_mask after promoting it to __GFP_HIGHMEM Weijie Yang
2014-02-14 6:41 ` Weijie Yang
2014-02-14 11:04 ` Mel Gorman
2014-02-14 11:04 ` Mel Gorman
2014-02-14 14:15 ` Rik van Riel [this message]
2014-02-14 14:15 ` Rik van Riel
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