Mike Christie 6000a368cd [SCSI] block: separate failfast into multiple bits. ... Multipath is best at handling transport errors. If it gets a device error then there is not much the multipath layer can do. It will just access the same device but from a different path. This patch breaks up failfast into device, transport and driver errors. The multipath layers (md and dm mutlipath) only ask the lower levels to fast fail transport errors. The user of failfast, read ahead, will ask to fast fail on all errors. Note that blk_noretry_request will return true if any failfast bit is set. This allows drivers that do not support the multipath failfast bits to continue to fail on any failfast error like before. Drivers like scsi that are able to fail fast specific errors can check for the specific fail fast type. In the next patch I will convert scsi. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>		2008-10-13 09:28:52 -04:00
..
as-iosched.c	block: as/cfq ssd idle check update	2008-10-09 08:56:19 +02:00
blk-barrier.c	block: adjust blkdev_issue_discard for swap	2008-10-09 08:56:17 +02:00
blk-core.c	[SCSI] block: separate failfast into multiple bits.	2008-10-13 09:28:52 -04:00
blk-exec.c	Add some block/ source files to the kernel-api docbook. Fix kernel-doc notation in them as needed. Fix changed function parameter names. Fix typos/spellos. In comments, change REQ_SPECIAL to REQ_TYPE_SPECIAL and REQ_BLOCK_PC to REQ_TYPE_BLOCK_PC.	2008-10-09 08:56:03 +02:00
blk-integrity.c	block: Switch blk_integrity_compare from bdev to gendisk	2008-10-09 08:56:21 +02:00
blk-ioc.c	cfq-iosched: fix RCU race in the cfq io_context destructor handling	2008-05-07 09:28:57 +02:00
blk-map.c	block: make blk_rq_map_user take a NULL user-space buffer	2008-10-09 08:56:11 +02:00
blk-merge.c	block: inherit CPU completion on bio->rq and rq->rq merges	2008-10-09 08:56:09 +02:00
blk-settings.c	block: add lld busy state exporting interface	2008-10-09 08:56:20 +02:00
blk-softirq.c	block: add fault injection mechanism for faking request timeouts	2008-10-09 08:56:17 +02:00
blk-sysfs.c	block: add support for IO CPU affinity	2008-10-09 08:56:09 +02:00
blk-tag.c	block: reserve some tags just for sync IO	2008-10-09 08:56:19 +02:00
blk-timeout.c	block: use rq complete marking in blk_abort_request()	2008-10-09 08:56:17 +02:00
blk.h	block: add fault injection mechanism for faking request timeouts	2008-10-09 08:56:17 +02:00
blktrace.c	blktrace: use BLKTRACE_BDEV_SIZE as the name size for setup structure	2008-10-09 08:56:20 +02:00
bsg.c	block: introduce struct rq_map_data to use reserved pages	2008-10-09 08:56:10 +02:00
cfq-iosched.c	block: as/cfq ssd idle check update	2008-10-09 08:56:19 +02:00
cmd-filter.c	block: move holder_dir from disk to part0	2008-10-09 08:56:08 +02:00
compat_ioctl.c	Add BLKDISCARD ioctl to allow userspace to discard sectors	2008-10-09 08:56:02 +02:00
deadline-iosched.c	deadline-iosched: non-functional fixes	2008-10-09 08:56:03 +02:00
elevator.c	block: change elevator to use __blk_end_request()	2008-10-09 08:56:21 +02:00
genhd.c	block: add fault injection mechanism for faking request timeouts	2008-10-09 08:56:17 +02:00
ioctl.c	block: make partition array dynamic	2008-10-09 08:56:08 +02:00
Kconfig	block: Block layer data integrity support	2008-07-03 13:21:13 +02:00
Kconfig.iosched	update I/O sched Kconfig help texts - CFQ is now default, not AS.	2007-02-17 20:08:22 +01:00
Makefile	block: unify request timeout handling	2008-10-09 08:56:13 +02:00
noop-iosched.c	block: let elv_register() return void	2007-12-18 08:29:28 +01:00
scsi_ioctl.c	block: introduce struct rq_map_data to use reserved pages	2008-10-09 08:56:10 +02:00