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Re: [PATCH] Memory management livelock
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From: Alasdair G Kergon
Subject:
Re: [PATCH] Memory management livelock
Date: Friday, October 3, 2008 - 7:36 am
On Fri, Oct 03, 2008 at 10:31:03PM +1000, Nick Piggin wrote:
quoted text
> On Friday 03 October 2008 21:26, Mikulas Patocka wrote: > > LVM does (that is where the bug was discovered). Basically, it scans all > > the block devices with direct IO and if someone else does buffered IO on > > any device simultaneously, it locks up. > Scans all block devices with direct IO? Hmm, why, I wonder? Should > really consider using buffered (posix_fadvise to readahead/dropbehind).
Scan in the sense of it reading a few sectors from each potential LVM device to check whether it contains an LVM label. Alasdair --
agk@redhat.com
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Messages in current thread:
[PATCH] Memory management livelock
, Mikulas Patocka
, (Mon Sep 22, 2:10 pm)
Re: [PATCH] Memory management livelock
, Andrew Morton
, (Mon Sep 22, 5:48 pm)
Re: [PATCH] Memory management livelock
, Mikulas Patocka
, (Tue Sep 23, 3:34 pm)
Re: [PATCH] Memory management livelock
, Andrew Morton
, (Tue Sep 23, 3:49 pm)
Re: [PATCH] Memory management livelock
, Mikulas Patocka
, (Tue Sep 23, 4:11 pm)
Re: [PATCH] Memory management livelock
, Andrew Morton
, (Tue Sep 23, 4:46 pm)
Re: [PATCH] Memory management livelock
, Mikulas Patocka
, (Wed Sep 24, 11:50 am)
[PATCH 1/3] Memory management livelock
, Mikulas Patocka
, (Wed Sep 24, 11:51 am)
[PATCH 2/3] Memory management livelock
, Mikulas Patocka
, (Wed Sep 24, 11:52 am)
[PATCH 3/3] Memory management livelock
, Mikulas Patocka
, (Wed Sep 24, 11:53 am)
Re: [PATCH 2/3] Memory management livelock
, Andrew Morton
, (Wed Oct 1, 10:54 pm)
Re: [PATCH] Memory management livelock
, Nick Piggin
, (Thu Oct 2, 7:32 pm)
Re: [PATCH] Memory management livelock
, Andrew Morton
, (Thu Oct 2, 7:40 pm)
Re: [PATCH] Memory management livelock
, Nick Piggin
, (Thu Oct 2, 7:54 pm)
Re: [PATCH] Memory management livelock
, Nick Piggin
, (Thu Oct 2, 7:59 pm)
Re: [PATCH] Memory management livelock
, Andrew Morton
, (Thu Oct 2, 8:14 pm)
Re: [PATCH] Memory management livelock
, Nick Piggin
, (Thu Oct 2, 8:47 pm)
Re: [PATCH] Memory management livelock
, Andrew Morton
, (Thu Oct 2, 8:56 pm)
Re: [PATCH] Memory management livelock
, Nick Piggin
, (Thu Oct 2, 9:07 pm)
Re: [PATCH] Memory management livelock
, Andrew Morton
, (Thu Oct 2, 9:17 pm)
Re: [PATCH] Memory management livelock
, Nick Piggin
, (Thu Oct 2, 9:29 pm)
Re: [PATCH] Memory management livelock
, Mikulas Patocka
, (Fri Oct 3, 4:26 am)
Re: [PATCH] Memory management livelock
, Mikulas Patocka
, (Fri Oct 3, 4:43 am)
Re: [PATCH] Memory management livelock
, Nick Piggin
, (Fri Oct 3, 5:27 am)
Re: [PATCH] Memory management livelock
, Nick Piggin
, (Fri Oct 3, 5:31 am)
Re: [PATCH] Memory management livelock
, Mikulas Patocka
, (Fri Oct 3, 6:50 am)
Re: [PATCH] Memory management livelock
, Mikulas Patocka
, (Fri Oct 3, 6:53 am)
Re: [PATCH] Memory management livelock
, Alasdair G Kergon
, (Fri Oct 3, 7:36 am)
Re: [PATCH] Memory management livelock
, Alasdair G Kergon
, (Fri Oct 3, 7:50 am)
application syncing options (was Re: [PATCH] Memory manage ...
, david
, (Fri Oct 3, 8:52 am)
RFC: one-bit mutexes (was: Re: [PATCH 2/3] Memory manageme ...
, Mikulas Patocka
, (Sun Oct 5, 3:11 pm)
[PATCH 1/3] bit mutexes
, Mikulas Patocka
, (Sun Oct 5, 3:14 pm)
[PATCH 2/3] Fix fsync livelock
, Mikulas Patocka
, (Sun Oct 5, 3:14 pm)
[PATCH 3/3] Fix fsync-vs-write misbehavior
, Mikulas Patocka
, (Sun Oct 5, 3:16 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Arjan van de Ven
, (Sun Oct 5, 3:33 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Mikulas Patocka
, (Sun Oct 5, 4:02 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Arjan van de Ven
, (Sun Oct 5, 4:07 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Mikulas Patocka
, (Sun Oct 5, 4:18 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Arjan van de Ven
, (Sun Oct 5, 4:28 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Mikulas Patocka
, (Sun Oct 5, 5:01 pm)
Re: application syncing options (was Re: [PATCH] Memory ma ...
, Mikulas Patocka
, (Sun Oct 5, 5:04 pm)
Re: application syncing options (was Re: [PATCH] Memory ma ...
, david
, (Sun Oct 5, 5:19 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Arjan van de Ven
, (Sun Oct 5, 5:30 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Dave Chinner
, (Sun Oct 5, 7:51 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Mikulas Patocka
, (Sun Oct 5, 8:30 pm)
Re: application syncing options (was Re: [PATCH] Memory ma ...
, Mikulas Patocka
, (Sun Oct 5, 8:42 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Arjan van de Ven
, (Sun Oct 5, 9:20 pm)
Re: [PATCH 2/3] Fix fsync livelock
, Mikulas Patocka
, (Mon Oct 6, 6:00 am)
Re: [PATCH 2/3] Fix fsync livelock
, Arjan van de Ven
, (Mon Oct 6, 6:50 am)
Re: [PATCH 2/3] Fix fsync livelock
, Mikulas Patocka
, (Mon Oct 6, 1:44 pm)
Re: application syncing options (was Re: [PATCH] Memory ma ...
, david
, (Mon Oct 6, 8:37 pm)
Re: application syncing options (was Re: [PATCH] Memory ma ...
, Mikulas Patocka
, (Tue Oct 7, 8:44 am)
Re: application syncing options (was Re: [PATCH] Memory ma ...
, david
, (Tue Oct 7, 10:16 am)
Re: [PATCH 2/3] Fix fsync livelock
, Pavel Machek
, (Wed Oct 8, 3:56 am)
[PATCH] documentation: explain memory barriers
, Randy Dunlap
, (Wed Oct 8, 6:12 pm)
Re: [PATCH] documentation: explain memory barriers
, Chris Snook
, (Wed Oct 8, 6:17 pm)
Re: [PATCH] documentation: explain memory barriers
, Andrew Morton
, (Wed Oct 8, 6:31 pm)
Re: [PATCH] documentation: explain memory barriers
, Valdis.Kletnieks
, (Wed Oct 8, 6:50 pm)
Re: [PATCH] documentation: explain memory barriers
, Chris Snook
, (Wed Oct 8, 10:51 pm)
Re: [PATCH] documentation: explain memory barriers
, Valdis.Kletnieks
, (Wed Oct 8, 11:52 pm)
Re: [PATCH] documentation: explain memory barriers
, Ben Hutchings
, (Thu Oct 9, 2:58 am)
Re: [PATCH] documentation: explain memory barriers
, Nick Piggin
, (Thu Oct 9, 10:29 am)
Re: [PATCH] documentation: explain memory barriers
, Nick Piggin
, (Thu Oct 9, 10:35 am)
Re: [PATCH] documentation: explain memory barriers
, Nick Piggin
, (Thu Oct 9, 2:27 pm)
Re: RFC: one-bit mutexes (was: Re: [PATCH 2/3] Memory mana ...
, Nick Piggin
, (Sat Oct 11, 5:06 am)
Re: RFC: one-bit mutexes (was: Re: [PATCH 2/3] Memory mana ...
, Mikulas Patocka
, (Mon Oct 20, 1:14 pm)
Re: RFC: one-bit mutexes (was: Re: [PATCH 2/3] Memory mana ...
, Nick Piggin
, (Mon Oct 20, 6:51 pm)
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