From: Daniel Micay <danielmicay@gmail.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>,
Andrew Morton <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Linux API <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>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
Shaohua Li <shli@kernel.org>, Michal Hocko <mhocko@suse.cz>,
yalin wang <yalin.wang2010@gmail.com>
Subject: Re: [PATCH v3 01/17] mm: support madvise(MADV_FREE)
Date: Fri, 13 Nov 2015 01:45:52 -0500 [thread overview]
Message-ID: <56458720.4010400@gmail.com> (raw)
In-Reply-To: <20151113063802.GF5235@bbox>
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> And now I am thinking if we use access bit, we could implment MADV_FREE_UNDO
> easily when we need it. Maybe, that's what you want. Right?
Yes, but why the access bit instead of the dirty bit for that? It could
always be made more strict (i.e. access bit) in the future, while going
the other way won't be possible. So I think the dirty bit is really the
more conservative choice since if it turns out to be a mistake it can be
fixed without a backwards incompatible change.
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next prev parent reply other threads:[~2015-11-13 6:45 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-12 4:32 [PATCH v3 00/17] MADFV_FREE support Minchan Kim
2015-11-12 4:32 ` [PATCH v3 01/17] mm: support madvise(MADV_FREE) Minchan Kim
2015-11-12 4:49 ` Andy Lutomirski
2015-11-12 5:21 ` Daniel Micay
2015-11-13 6:15 ` Minchan Kim
2015-11-13 6:16 ` Daniel Micay
[not found] ` <56458056.8020105-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-11-13 6:38 ` Minchan Kim
2015-11-13 6:45 ` Daniel Micay [this message]
2015-11-13 7:03 ` Minchan Kim
2015-11-13 8:13 ` Daniel Micay
2015-11-13 19:46 ` Andy Lutomirski
2015-11-16 2:13 ` Minchan Kim
2015-11-16 3:14 ` yalin wang
[not found] ` <1447302793-5376-2-git-send-email-minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-12 11:26 ` Kirill A. Shutemov
[not found] ` <20151112112620.GB22481-sVvlyX1904swdBt8bTSxpkEMvNT87kid@public.gmane.org>
2015-11-13 6:17 ` Minchan Kim
2015-11-12 4:32 ` [PATCH v3 02/17] mm: define MADV_FREE for some arches Minchan Kim
2015-11-12 4:32 ` [PATCH v3 03/17] arch: uapi: asm: mman.h: Let MADV_FREE have same value for all architectures Minchan Kim
2015-11-12 11:27 ` Kirill A. Shutemov
2015-11-13 6:18 ` Minchan Kim
[not found] ` <564895F3.8090300@hotmail.com>
2015-11-15 14:23 ` Chen Gang
2015-11-12 4:33 ` [PATCH v3 04/17] mm: free swp_entry in madvise_free Minchan Kim
2015-11-12 4:33 ` [PATCH v3 05/17] mm: move lazily freed pages to inactive list Minchan Kim
2015-11-12 4:33 ` [PATCH v3 06/17] mm: clear PG_dirty to mark page freeable Minchan Kim
2015-11-12 4:33 ` [PATCH v3 07/17] mm: mark stable page dirty in KSM Minchan Kim
2015-11-12 4:33 ` [PATCH v3 08/17] x86: add pmd_[dirty|mkclean] for THP Minchan Kim
2015-11-12 4:33 ` [PATCH v3 09/17] sparc: " Minchan Kim
2015-11-12 4:33 ` [PATCH v3 10/17] powerpc: " Minchan Kim
2015-11-12 4:33 ` [PATCH v3 11/17] arm: add pmd_mkclean " Minchan Kim
2015-11-12 4:33 ` [PATCH v3 12/17] arm64: " Minchan Kim
2015-11-12 4:33 ` [PATCH v3 13/17] mm: don't split THP page when syscall is called Minchan Kim
2015-11-12 4:33 ` [PATCH v3 14/17] mm: introduce wrappers to add new LRU Minchan Kim
2015-11-12 4:33 ` [PATCH v3 15/17] mm: introduce lazyfree LRU list Minchan Kim
[not found] ` <1447302793-5376-1-git-send-email-minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-12 4:33 ` [PATCH v3 16/17] mm: support MADV_FREE on swapless system Minchan Kim
2015-11-12 4:33 ` [PATCH v3 17/17] mm: add knob to tune lazyfreeing Minchan Kim
[not found] ` <1447302793-5376-18-git-send-email-minchan-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-12 19:44 ` Shaohua Li
[not found] ` <20151112194453.GA50352-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2015-11-13 6:20 ` Minchan Kim
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