Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]

From: Peter Zijlstra

Subject: Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock

Date: Monday, May 3, 2010 - 10:11 am

On Mon, 2010-05-03 at 19:02 +0200, Andrea Arcangeli wrote:
quoted text> On Mon, May 03, 2010 at 06:55:12PM +0200, Peter Zijlstra wrote:
> > This does leave me worrying about concurrent faults poking at
> > vma->vm_end without synchronization.
> 
> I didn't check this patch in detail yet. I agree it can be removed and
> I think it can be safely replaced with the page_table_lock.

Sure, it could probably be replaced with the ptl, but a single
anon_vma->lock would I think be better since there's more of them.



--
unsubscribe noticeTo 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/

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]

Messages in current thread:

[PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Rik van Riel, (Mon May 3, 9:18 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Linus Torvalds, (Mon May 3, 9:41 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Rik van Riel, (Mon May 3, 9:53 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Peter Zijlstra, (Mon May 3, 9:55 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Andrea Arcangeli, (Mon May 3, 10:02 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Peter Zijlstra, (Mon May 3, 10:11 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Linus Torvalds, (Mon May 3, 10:17 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Andrea Arcangeli, (Mon May 3, 10:18 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Rik van Riel, (Mon May 3, 10:58 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Andrea Arcangeli, (Mon May 3, 11:13 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Linus Torvalds, (Mon May 3, 11:19 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Rik van Riel, (Mon May 3, 11:38 am)

Re: [PATCH 1/2] mm: Take all anon_vma locks in anon_vma_lock, Mel Gorman, (Tue May 4, 6:12 am)


linux-kernel:
Mel Gorman	Re: [PATCH 1/4] vmstat: remove zone->lock from walk_zones_in_node
Guenter Roeck	Re: [lm-sensors] Location for thermal drivers
David Woodhouse	Re: RFC: Moving firmware blobs out of the kernel.
Siddha, Suresh B	Re: [PATCH 2.6.21 review I] [11/25] x86: default to physical mode on hotplug CPU k...
Peter Zijlstra	Re: [patch 4/6] mm: merge populate and nopage into fault (fixes nonlinear)
git-commits-head:
Linux Kernel Mailing List	[MIPS] Fix potential latency problem due to non-atomic cpu_wait.
Linux Kernel Mailing List	USB: rename USB_SPEED_VARIABLE to USB_SPEED_WIRELESS
Linux Kernel Mailing List	lib/vsprintf.c: fix bug omitting minus sign of numbers (module_param)
Linux Kernel Mailing List	[Bluetooth] Initiate authentication during connection establishment
Linux Kernel Mailing List	[POWERPC] 4xx: Add ppc40x_defconfig
linux-netdev:
MERCEDES	Your mail id has won 950,000.00 in the MERCEDES Benz Online Promo.for claims send:
David Miller	Re: [PATCH] xen/netfront: do not mark packets of length < MSS as GSO
David Miller	Re: skb_segment() questions
Shan Wei	[RFC PATCH net-next 2/5]IPv6:netfilter: Send an ICMPv6 "Fragment Reassembly Timeou...
Stanislaw Gruszka	[PATCH 1/4] bnx2x: use smp_mb() to keep ordering of read write operations
git:
Nicolas Sebrecht	git-svn died of signal 11 (was "3 failures on test t9100 (svn)")
Junio C Hamano	Re: [PATCH 2/2] Add url.<base>.pushInsteadOf: URL rewriting for push only
Martin Langhoff	Re: [PATCH] GIT commit statistics.
Alexandre Julliard	[PATCH] gitweb: Put back shortlog instead of graphiclog in the project list.
Josh Triplett	[PATCH 2/2] Add url.<base>.pushInsteadOf: URL rewriting for push only
openbsd-misc:
Taisto Qvist XX	Re: AMD GEODE LX-800 just works with kernel from install42.iso and kernelpanics wi...
Nico Meijer	Re: gOS Develop Kit with VIA pc-1 Processor Platform VIA C7-D
Andreas Bihlmaier	Re: jetway board sensors (Fintek F71805F)
admin	Drive a 2009 car from R799p/m
Antti Harri	Re: how to create a sha256 hash