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Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas

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From: Miklos Szeredi <miklos@...>
To: <a.p.zijlstra@...>
Cc: <npiggin@...>, <akpm@...>, <mingo@...>, <linux-mm@...>, <linux-kernel@...>, <benh@...>, <jdike@...>, <hugh@...>, <torvalds@...>
Subject: Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas
Date: Thursday, March 8, 2007 - 7:48 am

> However this still leaves the non-linear reclaim (Nick pointed it out as

OK, but that is a completely different problem, not affecting
page_mkclean() or msync().

And it doesn't sound too hard to solve: when current algorithm doesn't
seem to be making progress, then it will have to be done the hard way,
searching for for all nonlinear ptes of a page to unmap.

Miklos
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Messages in current thread:
[patch 0/6] fault vs truncate/invalidate race fix, Nick Piggin, (Wed Feb 21, 12:49 am)
Re: [patch 0/6] fault vs truncate/invalidate race fix, Dave Airlie, (Tue Feb 27, 12:36 am)
Re: [patch 0/6] fault vs truncate/invalidate race fix, Andrew Morton, (Tue Feb 27, 1:32 am)
Re: [patch 0/6] fault vs truncate/invalidate race fix, Nick Piggin, (Tue Feb 27, 4:50 am)
Re: [patch 0/6] fault vs truncate/invalidate race fix, Dave Airlie, (Tue Feb 27, 2:26 am)
Re: [patch 0/6] fault vs truncate/invalidate race fix, Benjamin Herrenschmidt, (Tue Feb 27, 2:54 am)
Re: [patch 0/6] fault vs truncate/invalidate race fix, Dave Airlie, (Sun Mar 18, 7:13 pm)
[patch 4/6] mm: merge populate and nopage into fault (fixes ..., Nick Piggin, (Wed Feb 21, 12:50 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Andrew Morton, (Wed Mar 7, 2:51 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Benjamin Herrenschmidt, (Wed Mar 7, 6:05 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 6:17 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Benjamin Herrenschmidt, (Wed Mar 7, 6:46 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Bill Irwin, (Wed Mar 7, 3:19 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 3:08 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 4:19 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Ingo Molnar, (Wed Mar 7, 4:27 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 4:59 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Ingo Molnar, (Wed Mar 7, 5:22 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 5:52 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Bill Irwin, (Wed Mar 7, 5:32 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Ingo Molnar, (Wed Mar 7, 5:35 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Bill Irwin, (Wed Mar 7, 5:50 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 5:11 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Miklos Szeredi, (Wed Mar 7, 4:38 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Andrew Morton, (Wed Mar 7, 4:47 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Miklos Szeredi, (Wed Mar 7, 4:51 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Andrew Morton, (Wed Mar 7, 5:07 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Peter Zijlstra, (Wed Mar 7, 5:32 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 5:45 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 6:04 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Peter Zijlstra, (Wed Mar 7, 6:06 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Miklos Szeredi, (Wed Mar 7, 6:13 am)
[rfc][patch 7/6] mm: merge page_mkwrite, Nick Piggin, (Wed Mar 7, 6:30 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 6:21 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Peter Zijlstra, (Wed Mar 7, 6:24 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 6:38 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Peter Zijlstra, (Wed Mar 7, 6:47 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 7:00 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Bill Irwin, (Wed Mar 7, 8:22 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 8:36 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Peter Zijlstra, (Wed Mar 7, 7:48 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 8:17 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Peter Zijlstra, (Wed Mar 7, 8:41 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 9:08 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Peter Zijlstra, (Wed Mar 7, 9:19 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 9:36 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Miklos Szeredi, (Wed Mar 7, 9:53 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 10:50 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Peter Zijlstra, (Wed Mar 7, 9:52 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Jeff Dike, (Wed Mar 7, 11:10 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Peter Zijlstra, (Wed Mar 7, 10:34 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 11:01 am)
[RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Peter Zijlstra, (Wed Mar 7, 12:58 pm)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Miklos Szeredi, (Thu Mar 8, 7:21 am)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Nick Piggin, (Thu Mar 8, 7:58 am)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Miklos Szeredi, (Thu Mar 8, 8:09 am)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Peter Zijlstra, (Thu Mar 8, 7:37 am)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Miklos Szeredi, (Thu Mar 8, 7:48 am)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Peter Zijlstra, (Thu Mar 8, 8:11 am)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Nick Piggin, (Thu Mar 8, 8:19 am)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Miklos Szeredi, (Thu Mar 8, 8:25 am)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Linus Torvalds, (Wed Mar 7, 2:00 pm)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Peter Zijlstra, (Wed Mar 7, 2:12 pm)
Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas, Peter Zijlstra, (Wed Mar 7, 2:24 pm)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Miklos Szeredi, (Wed Mar 7, 9:56 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Miklos Szeredi, (Wed Mar 7, 5:25 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 5:18 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Andrew Morton, (Wed Mar 7, 5:26 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 5:38 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Miklos Szeredi, (Wed Mar 7, 5:28 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Andrew Morton, (Wed Mar 7, 4:35 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Bill Irwin, (Wed Mar 7, 5:29 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Andrew Morton, (Wed Mar 7, 5:39 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Bill Irwin, (Wed Mar 7, 6:09 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Ingo Molnar, (Wed Mar 7, 4:53 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 5:28 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Bill Irwin, (Wed Mar 7, 5:44 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Blaisorblade, (Thu Mar 8, 8:39 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 5:49 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Wed Mar 7, 6:02 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Blaisorblade, (Mon Mar 12, 7:01 pm)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Mon Mar 12, 9:19 pm)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Blaisorblade, (Sat Mar 17, 8:17 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Sat Mar 17, 10:50 pm)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Blaisorblade, (Mon Mar 19, 4:44 pm)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Nick Piggin, (Tue Mar 20, 2:00 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Blaisorblade, (Wed Mar 21, 3:45 pm)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Bill Irwin, (Mon Mar 19, 8:04 am)
Re: [patch 4/6] mm: merge populate and nopage into fault (fi..., Jeff Dike, (Sun Mar 18, 9:09 am)
[patch 6/6] mm: remove legacy cruft, Nick Piggin, (Wed Feb 21, 12:50 am)
[patch 5/6] mm: merge nopfn into fault, Nick Piggin, (Wed Feb 21, 12:50 am)
Re: [patch 5/6] mm: merge nopfn into fault, Nick Piggin, (Wed Feb 21, 1:13 am)
[patch 3/6] mm: fix fault vs invalidate race for linear mapp..., Nick Piggin, (Wed Feb 21, 12:50 am)
Re: [patch 3/6] mm: fix fault vs invalidate race for linear ..., Andrew Morton, (Wed Mar 7, 2:36 am)
Re: [patch 3/6] mm: fix fault vs invalidate race for linear ..., Nick Piggin, (Wed Mar 7, 2:57 am)
Re: [patch 3/6] mm: fix fault vs invalidate race for linear ..., Andrew Morton, (Wed Mar 7, 3:08 am)
Re: [patch 3/6] mm: fix fault vs invalidate race for linear ..., Nick Piggin, (Wed Mar 7, 3:25 am)
[patch 2/6] mm: simplify filemap_nopage, Nick Piggin, (Wed Feb 21, 12:49 am)
[patch 1/6] mm: debug check for the fault vs invalidate race, Nick Piggin, (Wed Feb 21, 12:49 am)