Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Ilya Dryomov d5ce4c31d6 block: cope with WRITE ZEROES failing in blkdev_issue_zeroout() ... sd_config_write_same() ignores ->max_ws_blocks == 0 and resets it to permit trying WRITE SAME on older SCSI devices, unless ->no_write_same is set. Because REQ_OP_WRITE_ZEROES is implemented in terms of WRITE SAME, blkdev_issue_zeroout() may fail with -EREMOTEIO: $ fallocate -zn -l 1k /dev/sdg fallocate: fallocate failed: Remote I/O error $ fallocate -zn -l 1k /dev/sdg # OK $ fallocate -zn -l 1k /dev/sdg # OK The following calls succeed because sd_done() sets ->no_write_same in response to a sense that would become BLK_STS_TARGET/-EREMOTEIO, causing __blkdev_issue_zeroout() to fall back to generating ZERO_PAGE bios. This means blkdev_issue_zeroout() must cope with WRITE ZEROES failing and fall back to manually zeroing, unless BLKDEV_ZERO_NOFALLBACK is specified. For BLKDEV_ZERO_NOFALLBACK case, return -EOPNOTSUPP if sd_done() has just set ->no_write_same thus indicating lack of offload support. Fixes: c20cfc27a4 ("block: stop using blkdev_issue_write_same for zeroing") Cc: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2017-10-25 12:28:23 -06:00
..
partitions
badblocks.c
bfq-cgroup.c
bfq-iosched.c	block, bfq: fix unbalanced decrements of burst size	2017-10-09 09:54:58 -06:00
bfq-iosched.h
bfq-wf2q.c
bio-integrity.c	block: remove unnecessary NULL checks in bioset_integrity_free()	2017-10-06 13:03:12 -06:00
bio.c	block: fix Sphinx kernel-doc warning	2017-10-16 13:00:12 -06:00
blk-cgroup.c	blkcg: check pol->cpd_free_fn before free cpd	2017-10-10 09:04:47 -06:00
blk-core.c	block: set request_list for request	2017-10-10 13:48:16 -06:00
blk-exec.c
blk-flush.c
blk-integrity.c
blk-ioc.c
blk-lib.c	block: cope with WRITE ZEROES failing in blkdev_issue_zeroout()	2017-10-25 12:28:23 -06:00
blk-map.c
blk-merge.c
blk-mq-cpumap.c
blk-mq-debugfs.c	block: remove QUEUE_FLAG_STACKABLE	2017-10-05 15:22:59 -06:00
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-rdma.c
blk-mq-sched.c
blk-mq-sched.h
blk-mq-sysfs.c
blk-mq-tag.c
blk-mq-tag.h
blk-mq-virtio.c
blk-mq.c	block: set request_list for request	2017-10-10 13:48:16 -06:00
blk-mq.h
blk-settings.c
blk-softirq.c
blk-stat.c	blk-stat: delete useless code	2017-10-10 13:48:14 -06:00
blk-stat.h
blk-sysfs.c
blk-tag.c
blk-throttle.c	blk-throttle: fix null pointer dereference while throttling writeback IOs	2017-10-10 13:09:34 -06:00
blk-timeout.c	blk-mq: attempt to fix atomic flag memory ordering	2017-10-04 11:20:11 -06:00
blk-wbt.c	block,bfq: Disable writeback throttling	2017-10-09 08:29:21 -06:00
blk-wbt.h
blk-zoned.c
blk.h	blk-mq: document the need to have STARTED and COMPLETED share a byte	2017-10-04 11:22:24 -06:00
bounce.c
bsg-lib.c
bsg.c
cfq-iosched.c
cmdline-parser.c
compat_ioctl.c
deadline-iosched.c
elevator.c	block: remove QUEUE_FLAG_STACKABLE	2017-10-05 15:22:59 -06:00
genhd.c
ioctl.c	block: move CAP_SYS_ADMIN check in blkdev_roset()	2017-10-25 12:25:00 -06:00
ioprio.c
Kconfig
Kconfig.iosched
kyber-iosched.c	kyber: fix hang on domain token wait queue	2017-10-17 16:18:11 -06:00
Makefile
mq-deadline.c
noop-iosched.c
opal_proto.h
partition-generic.c
scsi_ioctl.c
sed-opal.c
t10-pi.c