From: Rik van Riel <riel@redhat.com>
To: Eric B Munson <emunson@akamai.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>,
Thomas Gleixner <tglx@linutronix.de>,
Christoph Lameter <cl@linux.com>,
Peter Zijlstra <peterz@infradead.org>,
Mel Gorman <mgorman@suse.de>,
David Rientjes <rientjes@google.com>,
Michal Hocko <mhocko@suse.cz>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH V5] Allow compaction of unevictable pages
Date: Fri, 13 Mar 2015 14:56:14 -0400 [thread overview]
Message-ID: <550332CE.7040404@redhat.com> (raw)
In-Reply-To: <1426267597-25811-1-git-send-email-emunson@akamai.com>
On 03/13/2015 01:26 PM, Eric B Munson wrote:
> --- a/mm/compaction.c
> +++ b/mm/compaction.c
> @@ -1046,6 +1046,8 @@ typedef enum {
> ISOLATE_SUCCESS, /* Pages isolated, migrate */
> } isolate_migrate_t;
>
> +int sysctl_compact_unevictable;
> +
> /*
> * Isolate all pages that can be migrated from the first suitable block,
> * starting at the block pointed to by the migrate scanner pfn within
I suspect that the use cases where users absolutely do not want
unevictable pages migrated are special cases, and it may make
sense to enable sysctl_compact_unevictable by default.
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WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Eric B Munson <emunson@akamai.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <vbabka@suse.cz>,
Thomas Gleixner <tglx@linutronix.de>,
Christoph Lameter <cl@linux.com>,
Peter Zijlstra <peterz@infradead.org>,
Mel Gorman <mgorman@suse.de>,
David Rientjes <rientjes@google.com>,
Michal Hocko <mhocko@suse.cz>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH V5] Allow compaction of unevictable pages
Date: Fri, 13 Mar 2015 14:56:14 -0400 [thread overview]
Message-ID: <550332CE.7040404@redhat.com> (raw)
In-Reply-To: <1426267597-25811-1-git-send-email-emunson@akamai.com>
On 03/13/2015 01:26 PM, Eric B Munson wrote:
> --- a/mm/compaction.c
> +++ b/mm/compaction.c
> @@ -1046,6 +1046,8 @@ typedef enum {
> ISOLATE_SUCCESS, /* Pages isolated, migrate */
> } isolate_migrate_t;
>
> +int sysctl_compact_unevictable;
> +
> /*
> * Isolate all pages that can be migrated from the first suitable block,
> * starting at the block pointed to by the migrate scanner pfn within
I suspect that the use cases where users absolutely do not want
unevictable pages migrated are special cases, and it may make
sense to enable sysctl_compact_unevictable by default.
next prev parent reply other threads:[~2015-03-13 18:56 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-13 17:26 [PATCH V5] Allow compaction of unevictable pages Eric B Munson
2015-03-13 17:26 ` Eric B Munson
2015-03-13 18:56 ` Rik van Riel [this message]
2015-03-13 18:56 ` Rik van Riel
2015-03-13 19:09 ` Eric B Munson
2015-03-13 20:19 ` Michal Hocko
2015-03-13 20:19 ` Michal Hocko
2015-03-16 10:14 ` Vlastimil Babka
2015-03-16 10:14 ` Vlastimil Babka
[not found] ` <5506ACEC.9010403-AlSwsSmVLrQ@public.gmane.org>
2015-03-16 13:49 ` Eric B Munson
2015-03-16 13:49 ` Eric B Munson
[not found] ` <20150316134956.GA15324-JqFfY2XvxFXQT0dZR+AlfA@public.gmane.org>
2015-03-18 14:40 ` Vlastimil Babka
2015-03-18 14:40 ` Vlastimil Babka
2015-03-18 14:40 ` Vlastimil Babka
2015-03-18 15:40 ` Steven Rostedt
2015-03-18 15:40 ` Steven Rostedt
2015-03-13 23:18 ` David Rientjes
2015-03-13 23:18 ` David Rientjes
2015-03-13 23:43 ` Rik van Riel
2015-03-13 23:43 ` Rik van Riel
2015-03-16 15:39 ` Christoph Lameter
2015-03-16 15:39 ` Christoph Lameter
2015-03-13 20:02 ` Michal Hocko
2015-03-13 20:02 ` Michal Hocko
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