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Martin K. Petersen f3f5da624e block: Do a full clone when splitting discard bios ... This fixes a data corruption bug when using discard on top of MD linear, raid0 and raid10 personalities. Commit 20d0189b10 "block: Introduce new bio_split()" permits sharing the bio_vec between the two resulting bios. That is fine for read/write requests where the bio_vec is immutable. For discards, however, we need to be able to attach a payload and update the bio_vec so the page can get mapped to a scatterlist entry. Therefore the bio_vec can not be shared when splitting discards and we must do a full clone. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Reported-by: Seunguk Shin <seunguk.shin@samsung.com> Tested-by: Seunguk Shin <seunguk.shin@samsung.com> Cc: Seunguk Shin <seunguk.shin@samsung.com> Cc: Jens Axboe <axboe@fb.com> Cc: Kent Overstreet <kent.overstreet@gmail.com> Cc: <stable@vger.kernel.org> # v3.14+ Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>		10 years ago
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partitions	Merge branch 'for-3.20/core' of git://git.kernel.dk/linux-block	10 years ago
Kconfig	block: Add T10 Protection Information functions	11 years ago
Kconfig.iosched	blkcg: make CONFIG_BLK_CGROUP bool	13 years ago
Makefile	block: Add T10 Protection Information functions	11 years ago
bio-integrity.c	bio integrity: do not assume bio_integrity_pool exists if bioset exists	10 years ago
bio.c	block: Do a full clone when splitting discard bios	10 years ago
blk-cgroup.c	blkcg: fix gendisk reference leak in blkg_conf_prep()	10 years ago
blk-core.c	block: use FIELD_SIZEOF to calculate size of a field	10 years ago
blk-exec.c	block: move PM request support to IDE	10 years ago
blk-flush.c	blk-mq: support per-distpatch_queue flush machinery	11 years ago
blk-integrity.c	writeback: separate out include/linux/backing-dev-defs.h	10 years ago
blk-ioc.c	block: Substitute rcu_access_pointer() for rcu_dereference_raw()	11 years ago
blk-iopoll.c	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	11 years ago
blk-lib.c	block: Quiesce zeroout wrapper	10 years ago
blk-map.c	blk_rq_map_user(): use import_single_range()	10 years ago
blk-merge.c	block: only honor SG gap prevention for merges that contain data	10 years ago
blk-mq-cpu.c	blk-mq: add file comments and update copyright notices	11 years ago
blk-mq-cpumap.c	sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask()	10 years ago
blk-mq-sysfs.c	blk-mq: add blk_mq_init_allocated_queue and export blk_mq_register_disk	10 years ago
blk-mq-tag.c	blk-mq: Shared tag enhancements	10 years ago
blk-mq-tag.h	blk-mq: Shared tag enhancements	10 years ago
blk-mq.c	blk-mq: set default timeout as 30 seconds	10 years ago
blk-mq.h	blk-mq: release mq's kobjects in blk_release_queue()	10 years ago
blk-settings.c	block: fix blk_stack_limits() regression due to lcm() change	10 years ago
blk-softirq.c	block: fix regression with block enabled tagging	11 years ago
blk-sysfs.c	Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block	10 years ago
blk-tag.c	block: support different tag allocation policy	10 years ago
blk-throttle.c	blkcg: move block/blk-cgroup.h to include/linux/blk-cgroup.h	10 years ago
blk-timeout.c	blk-mq: Allow requests to never expire	10 years ago
blk.h	blk-mq: make plug work for mutiple disks and queues	10 years ago
bounce.c	Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block	10 years ago
bsg-lib.c	bsg: Remove unused function bsg_goose_queue()	12 years ago
bsg.c	block: Simplify bsg complete all	10 years ago
cfq-iosched.c	Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block	10 years ago
cmdline-parser.c	block: remove unrelated header files and export symbol	11 years ago
compat_ioctl.c	block, bdi: an active gendisk always has a request_queue associated with it	11 years ago
deadline-iosched.c	block: Stop abusing csd.list for fifo_time	11 years ago
elevator.c	Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block	10 years ago
genhd.c	Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block	10 years ago
ioctl.c	block: replace trylock with mutex_lock in blkdev_reread_part()	10 years ago
ioprio.c	block: Fix computation of merged request priority	10 years ago
noop-iosched.c	elevator: Fix a race in elevator switching	12 years ago
partition-generic.c	block: Fix dev_t minor allocation lifetime	11 years ago
scsi_ioctl.c	block: fix bogus EFAULT error from SG_IO ioctl	10 years ago
t10-pi.c	block: Add T10 Protection Information functions	11 years ago