Staging
v0.5.1
v0.5.1
https://github.com/torvalds/linux
Revision 0b1d647a02c5a1b67d45287eeb6cb3b2219c41c3 authored by Pavel Mironchik on 01 September 2006, 04:27:47 UTC, committed by Linus Torvalds on 01 September 2006, 18:39:09 UTC
This patch works around a complex dm-related deadlock/livelock down in the mempool allocator. Alasdair said: Several dm targets suffer from this. Mempools are not yet used correctly everywhere in device-mapper: they can get shared when devices are stacked, and some targets share them across multiple instances. I made fixing this one of the prerequisites for this patch: md-dm-reduce-stack-usage-with-stacked-block-devices.patch which in some cases makes people more likely to hit the problem. There's been some progress on this recently with (unfinished) dm-crypt patches at: http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/ (dm-crypt-move-io-to-workqueue.patch plus dependencies) and: I've no problems with a temporary workaround like that, but Milan Broz (a new Redhat developer in the Czech Republic) has started reviewing all the mempool usage in device-mapper so I'm expecting we'll soon have a proper fix for this associated problems. [He's back from holiday at the start of next week.] For now, this sad-but-safe little patch will allow the machine to recover. [akpm@osdl.org: rewrote changelog] Cc: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 1e5f5e5
Tip revision: 0b1d647a02c5a1b67d45287eeb6cb3b2219c41c3 authored by Pavel Mironchik on 01 September 2006, 04:27:47 UTC
[PATCH] dm: work around mempool_alloc, bio_alloc_bioset deadlocks
[PATCH] dm: work around mempool_alloc, bio_alloc_bioset deadlocks
Tip revision: 0b1d647
File | Mode | Size |
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Documentation | ||
arch | ||
block | ||
crypto | ||
drivers | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
scripts | ||
security | ||
sound | ||
usr | ||
.gitignore | -rw-r--r-- | 521 bytes |
COPYING | -rw-r--r-- | 18.3 KB |
CREDITS | -rw-r--r-- | 87.4 KB |
Kbuild | -rw-r--r-- | 1.2 KB |
MAINTAINERS | -rw-r--r-- | 71.0 KB |
Makefile | -rw-r--r-- | 46.5 KB |
README | -rw-r--r-- | 16.2 KB |
REPORTING-BUGS | -rw-r--r-- | 3.0 KB |
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