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| Path | csiph.com!eternal-september.org!feeder.eternal-september.org!aioe.org!bofh.it!news.nic.it!robomod |
|---|---|
| From | Pavel Machek <pavel@ucw.cz> |
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2 00/13] MADV_FREE support |
| Date | Sat, 05 Dec 2015 12:20:01 +0100 |
| Message-ID | <qCj2F-kX-3@gated-at.bofh.it> (permalink) |
| References | <qqV3I-27u-7@gated-at.bofh.it> |
| X-Original-To | Minchan Kim <minchan@kernel.org> |
| MIME-Version | 1.0 |
| Content-Type | text/plain; charset=us-ascii |
| Content-Disposition | inline |
| User-Agent | Mutt/1.5.23 (2014-03-12) |
| Sender | robomod@news.nic.it |
| List-ID | <linux-kernel.vger.kernel.org> |
| X-Mailing-List | linux-kernel@vger.kernel.org |
| Approved | robomod@news.nic.it |
| Lines | 23 |
| Organization | linux.* mail to news gateway |
| X-Original-Cc | Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Michael Kerrisk <mtk.manpages@gmail.com>, linux-api@vger.kernel.org, Hugh Dickins <hughd@google.com>, Johannes Weiner <hannes@cmpxchg.org>, Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Jason Evans <je@fb.com>, Daniel Micay <danielmicay@gmail.com>, "Kirill A. Shutemov" <kirill@shutemov.name>, Shaohua Li <shli@kernel.org>, Michal Hocko <mhocko@suse.cz>, yalin.wang2010@gmail.com |
| X-Original-Date | Sat, 5 Dec 2015 12:10:42 +0100 |
| X-Original-Message-ID | <20151205111042.GA11598@amd> |
| X-Original-References | <1446600367-7976-1-git-send-email-minchan@kernel.org> |
| X-Original-Sender | linux-kernel-owner@vger.kernel.org |
| Xref | csiph.com linux.kernel:1284532 |
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On Wed 2015-11-04 10:25:54, Minchan Kim wrote: > MADV_FREE is on linux-next so long time. The reason was two, I think. > > 1. MADV_FREE code on reclaim path was really mess. Could you explain what MADV_FREE does? Comment in code says 'free the page only when there's memory pressure'. So I mark my caches MADV_FREE, no memory pressure, I can keep using it? And if there's memory pressure, what happens? I get zeros? SIGSEGV? Thanks, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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Re: [PATCH v2 00/13] MADV_FREE support Pavel Machek <pavel@ucw.cz> - 2015-12-05 12:20 +0100 Re: [PATCH v2 00/13] MADV_FREE support Daniel Micay <danielmicay@gmail.com> - 2015-12-05 17:00 +0100
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