Christoph Hellwig 4246a0b63b block: add a bi_error field to struct bio ... Currently we have two different ways to signal an I/O error on a BIO: (1) by clearing the BIO_UPTODATE flag (2) by returning a Linux errno value to the bi_end_io callback The first one has the drawback of only communicating a single possible error (-EIO), and the second one has the drawback of not beeing persistent when bios are queued up, and are not passed along from child to parent bio in the ever more popular chaining scenario. Having both mechanisms available has the additional drawback of utterly confusing driver authors and introducing bugs where various I/O submitters only deal with one of them, and the others have to add boilerplate code to deal with both kinds of error returns. So add a new bi_error field to store an errno value directly in struct bio and remove the existing mechanisms to clean all this up. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: NeilBrown <neilb@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>		2015-07-29 08:55:15 -06:00
..
partitions	Merge branch 'for-3.20/core' of git://git.kernel.dk/linux-block	2015-02-12 14:13:23 -08:00
Kconfig	block: Add T10 Protection Information functions	2014-09-27 09:14:59 -06:00
Kconfig.iosched	blkcg: make CONFIG_BLK_CGROUP bool	2012-03-06 21:27:21 +01:00
Makefile	block: Add T10 Protection Information functions	2014-09-27 09:14:59 -06:00
bio-integrity.c	block: add a bi_error field to struct bio	2015-07-29 08:55:15 -06:00
bio.c	block: add a bi_error field to struct bio	2015-07-29 08:55:15 -06:00
blk-cgroup.c	blkcg: fix blkcg_policy_data allocation bug	2015-07-09 14:41:11 -06:00
blk-core.c	block: add a bi_error field to struct bio	2015-07-29 08:55:15 -06:00
blk-exec.c	block: move PM request support to IDE	2015-05-05 13:40:42 -06:00
blk-flush.c	blk-mq: support per-distpatch_queue flush machinery	2014-09-25 15:22:45 -06:00
blk-integrity.c	writeback: separate out include/linux/backing-dev-defs.h	2015-06-02 08:33:34 -06:00
blk-ioc.c	block: Substitute rcu_access_pointer() for rcu_dereference_raw()	2014-02-18 12:21:26 -08:00
blk-iopoll.c	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	2014-06-03 12:57:53 -07:00
blk-lib.c	block: add a bi_error field to struct bio	2015-07-29 08:55:15 -06:00
blk-map.c	block: add a bi_error field to struct bio	2015-07-29 08:55:15 -06:00
blk-merge.c	block: only honor SG gap prevention for merges that contain data	2015-05-29 13:10:23 -06:00
blk-mq-cpu.c	blk-mq: add file comments and update copyright notices	2014-05-28 10:15:41 -06:00
blk-mq-cpumap.c	sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask()	2015-05-27 15:22:15 +02:00
blk-mq-sysfs.c	blk-mq: add blk_mq_init_allocated_queue and export blk_mq_register_disk	2015-03-13 08:26:53 -06:00
blk-mq-tag.c	blk-mq: Shared tag enhancements	2015-06-01 14:35:56 -06:00
blk-mq-tag.h	blk-mq: Shared tag enhancements	2015-06-01 14:35:56 -06:00
blk-mq.c	block: add a bi_error field to struct bio	2015-07-29 08:55:15 -06:00
blk-mq.h	blk-mq: release mq's kobjects in blk_release_queue()	2015-01-29 08:30:51 -08:00
blk-settings.c	block: make /sys/block/<dev>/queue/discard_max_bytes writeable	2015-07-17 08:41:53 -06:00
blk-softirq.c	block: fix regression with block enabled tagging	2014-04-09 21:54:06 -06:00
blk-sysfs.c	block: make /sys/block/<dev>/queue/discard_max_bytes writeable	2015-07-17 08:41:53 -06:00
blk-tag.c	block: support different tag allocation policy	2015-01-23 14:15:46 -07:00
blk-throttle.c	blkcg: move block/blk-cgroup.h to include/linux/blk-cgroup.h	2015-06-02 08:33:33 -06:00
blk-timeout.c	blk-mq: Allow requests to never expire	2015-01-08 08:59:01 -07:00
blk.h	blk-mq: make plug work for mutiple disks and queues	2015-05-08 14:17:23 -06:00
bounce.c	block: add a bi_error field to struct bio	2015-07-29 08:55:15 -06:00
bsg-lib.c	bsg: Remove unused function bsg_goose_queue()	2012-12-06 14:33:02 +01:00
bsg.c	block: Simplify bsg complete all	2015-02-04 09:57:52 -07:00
cfq-iosched.c	Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block	2015-06-25 16:00:17 -07:00
cmdline-parser.c	block: remove unrelated header files and export symbol	2014-01-21 20:18:26 -08:00
compat_ioctl.c	block, bdi: an active gendisk always has a request_queue associated with it	2014-09-08 10:00:35 -06:00
deadline-iosched.c	block: Stop abusing csd.list for fifo_time	2014-02-24 14:46:32 -08:00
elevator.c	Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block	2015-06-25 16:00:17 -07:00
genhd.c	block: partition: convert percpu ref	2015-07-17 08:41:53 -06:00
ioctl.c	block: replace trylock with mutex_lock in blkdev_reread_part()	2015-05-20 09:05:45 -06:00
ioprio.c	block: Fix computation of merged request priority	2014-10-31 08:30:43 -06:00
noop-iosched.c	elevator: Fix a race in elevator switching	2013-07-03 13:25:24 +02:00
partition-generic.c	block: partition: convert percpu ref	2015-07-17 08:41:53 -06:00
scsi_ioctl.c	block: fix bogus EFAULT error from SG_IO ioctl	2015-06-27 11:43:34 -06:00
t10-pi.c	block: Add T10 Protection Information functions	2014-09-27 09:14:59 -06:00