]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[PATCH] uml: fix I/O hang when multiple devices are in use
authorJeff Dike <jdike@addtoit.com>
Thu, 29 Mar 2007 08:20:27 +0000 (01:20 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Thu, 29 Mar 2007 15:22:24 +0000 (08:22 -0700)
commit2a9529a0c890007ade5425b75272c3def283f8b1
tree964576fad2872f41e798e109979daad4002007af
parentcb3fecc2f29056e89658e7eb371e7f9be66cda6d
[PATCH] uml: fix I/O hang when multiple devices are in use

Commit 62f96cb01e8de7a5daee472e540f726db2801499 introduced per-devices
queues and locks, which was fine as far as it went, but left in place a
global which controlled access to submitting requests to the host.  This
should have been made per-device as well, since it causes I/O hangs when
multiple block devices are in use.

This patch fixes that by replacing the global with an activity flag in the
device structure in order to tell whether the queue is currently being run.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/um/drivers/ubd_kern.c