OGAWA Hirofumi fba822722e [PATCH 1/2] iosched: fix typo and barrier() ... On rmmod path, cfq/as waits to make sure all io-contexts was freed. However, it's using complete(), not wait_for_completion(). I think barrier() is not enough in here. To avoid the following case, this patch replaces barrier() with smb_wmb(). cpu0 visibility cpu1 [ioc_gnone=NULL,ioc_count=1] ioc_gnone = &all_gone NULL,ioc_count=1 atomic_read(&ioc_count) NULL,ioc_count=1 wait_for_completion() NULL,ioc_count=0 atomic_sub_and_test() NULL,ioc_count=0 if ( && ioc_gone) [ioc_gone==NULL, so doesn't call complete()] &all_gone,ioc_count=0 Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Jens Axboe <axboe@suse.de>		2006-04-18 09:44:06 +02:00
..
as-iosched.c	[PATCH 1/2] iosched: fix typo and barrier()	2006-04-18 09:44:06 +02:00
blktrace.c	[PATCH] Block queue IO tracing support (blktrace) as of 2006-03-23	2006-03-23 20:00:26 +01:00
cfq-iosched.c	[PATCH 1/2] iosched: fix typo and barrier()	2006-04-18 09:44:06 +02:00
deadline-iosched.c	[PATCH] fix rmmod problems with elevator attributes, clean them up	2006-03-18 22:27:18 -05:00
elevator.c	[PATCH] Don't pass boot parameters to argv_init[]	2006-03-31 12:18:53 -08:00
genhd.c	[PATCH] Simplify proc/devices and fix early termination regression	2006-03-31 12:18:53 -08:00
ioctl.c	[PATCH] Block queue IO tracing support (blktrace) as of 2006-03-23	2006-03-23 20:00:26 +01:00
Kconfig	[PATCH] config: fix CONFIG_LFS option	2006-03-31 12:18:55 -08:00
Kconfig.iosched	[BLOCK] iosched: fix setting of default io scheduler	2005-11-04 08:44:58 +01:00
ll_rw_blk.c	Documentation: fix minor kernel-doc warnings	2006-04-02 13:59:55 +02:00
Makefile	[PATCH] Block queue IO tracing support (blktrace) as of 2006-03-23	2006-03-23 20:00:26 +01:00
noop-iosched.c	[BLOCK] noop-iosched: reimplementation of request dispatching	2005-11-12 10:56:52 +01:00
scsi_ioctl.c	[SCSI] unify SCSI_IOCTL_SEND_COMMAND implementations	2006-04-13 10:13:15 -05:00