From: Gerald Schaefer <geraldsc@de.ibm.com>
Date: Sat, 4 Jun 2005 22:43:33 +0000 (-0700)
Subject: [PATCH] s390: deadlock in appldata
X-Git-Tag: v2.6.12-rc6~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f26d583e41aedad8159acf9533fa287d7209dfbf;p=pandora-kernel.git

[PATCH] s390: deadlock in appldata

The system might hang when using appldata_mem with high I/O traffic and a
large number of devices.  The spinlocks bdev_lock and swaplock are acquired
via calls to si_meminfo() and si_swapinfo() from a tasklet, i.e.  interrupt
context, which can lead to a deadlock.  Replace tasklet with work queue.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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