Linas Vepstas 95543179f1 [PATCH] elevator: move clearing of unplug flag earlier ... A flag was recently added to the elevator code to avoid performing an unplug when reuests are being re-queued. The goal of this flag was to avoid a deep recursion that can occur when re-queueing requests after a SCSI device/host reset. See http://lkml.org/lkml/2006/5/17/254 However, that fix added the flag near the bottom of a case statement, where an earlier break (in an if statement) could transport one out of the case, without setting the flag. This patch sets the flag earlier in the case statement. I re-discovered the deep recursion recently during testing; I was told that it was a known problem, and the fix to it was in the kernel I was testing. Indeed it was ... but it didn't fix the bug. With the patch below, I no longer see the bug. Signed-off by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Jens Axboe <axboe@suse.de> Cc: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2007-01-23 11:01:17 -08:00
..
as-iosched.c	[PATCH] Allow as-iosched to be unloaded	2006-12-13 13:25:18 +01:00
blktrace.c	[PATCH] Allow NULL pointers in percpu_free	2006-12-07 08:39:22 -08:00
cfq-iosched.c	[PATCH] cfq-iosched: merging problem	2007-01-02 09:46:16 -08:00
deadline-iosched.c	[BLOCK] Cleanup unused variable passing	2006-12-01 10:42:33 +01:00
elevator.c	[PATCH] elevator: move clearing of unplug flag earlier	2007-01-23 11:01:17 -08:00
genhd.c	[PATCH] fault-injection capability for disk IO	2006-12-08 08:29:02 -08:00
ioctl.c	[PATCH] struct path: convert block	2006-12-08 08:28:44 -08:00
Kconfig	[PATCH] Centralise definitions of sector_t and blkcnt_t	2006-12-04 19:41:15 -08:00
Kconfig.iosched
ll_rw_blk.c	[PATCH] fix kernel-doc warnings in 2.6.20-rc1	2006-12-22 08:55:47 -08:00
Makefile
noop-iosched.c	[BLOCK] Cleanup unused variable passing	2006-12-01 10:42:33 +01:00
scsi_ioctl.c	[PATCH] Fixup blk_rq_unmap_user() API	2006-12-19 11:12:46 +01:00