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Martin Wilck 2258351cf0 block: bio_iov_iter_get_pages: fix size of last iovec 
commit b403ea2404889e1227812fa9657667a1deb9c694 upstream.

If the last page of the bio is not "full", the length of the last
vector slot needs to be corrected. This slot has the index
(bio->bi_vcnt - 1), but only in bio->bi_io_vec. In the "bv" helper
array, which is shifted by the value of bio->bi_vcnt at function
invocation, the correct index is (nr_pages - 1).

v2: improved readability following suggestions from Ming Lei.
v3: followed a formatting suggestion from Christoph Hellwig.

Fixes: 2cefe4dbaadf ("block: add bio_iov_iter_get_pages()")
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-03 07:50:42 +02:00
..
partitions
partitions/msdos: Unable to mount UFS 44bsd partitions
2018-04-08 14:26:28 +02:00
badblocks.c
badblocks: fix wrong return value in badblocks_set if badblocks are disabled
2017-12-20 10:10:26 +01:00
bfq-cgroup.c
block, bfq: put async queues for root bfq groups too
2018-04-12 12:32:19 +02:00
bfq-iosched.c
block, bfq: remove wrong lock in bfq_requests_merged
2018-08-03 07:50:26 +02:00
bfq-iosched.h
Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block
2017-09-07 11:59:42 -07:00
bfq-wf2q.c
block, bfq: guarantee update_next_in_service always returns an eligible entity
2017-08-31 08:20:31 -06:00
bio-integrity.c
Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block
2017-09-07 11:59:42 -07:00
bio.c
block: bio_iov_iter_get_pages: fix size of last iovec
2018-08-03 07:50:42 +02:00
blk-cgroup.c
blkcg: init root blkcg_gq under lock
2018-06-21 04:02:44 +09:00
blk-core.c
block: do not use interruptible wait anywhere
2018-07-22 14:28:48 +02:00
blk-exec.c
block: introduce new block status code type
2017-06-09 09:27:32 -06:00
blk-flush.c
block: update comments to reflect REQ_FLUSH -> REQ_PREFLUSH rename
2017-08-25 10:36:54 -06:00
blk-integrity.c
block: switch bios to blk_status_t
2017-06-09 09:27:32 -06:00
blk-ioc.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blk-lib.c
block: cope with WRITE ZEROES failing in blkdev_issue_zeroout()
2018-07-11 16:29:19 +02:00
blk-map.c
blk_rq_map_user_iov: fix error override
2018-02-25 11:07:49 +01:00
blk-merge.c
blk-mq: fix discard merge with scheduler attached
2018-04-26 11:02:15 +02:00
blk-mq-cpumap.c
blk-mq: don't keep offline CPUs mapped to hctx 0
2018-04-19 08:56:20 +02:00
blk-mq-debugfs.c
blk-mq-debugfs: don't allow write on attributes with seq_operations set
2018-04-26 11:02:11 +02:00
blk-mq-debugfs.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blk-mq-pci.c
blk-mq-pci: add a fallback when pci_irq_get_affinity returns NULL
2017-08-18 08:08:14 -06:00
blk-mq-rdma.c
block: Add rdma affinity based queue mapping helper
2017-08-08 14:58:03 -04:00
blk-mq-sched.c
blk-mq-sched: dispatch from scheduler IFF progress is made in ->dispatch
2017-12-20 10:10:27 +01:00
blk-mq-sched.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blk-mq-sysfs.c
blk-mq: untangle debugfs and sysfs
2017-05-04 08:24:13 -06:00
blk-mq-tag.c
blk-mq: Make blk_mq_reinit_tagset() calls easier to read
2017-08-18 08:36:58 -06:00
blk-mq-tag.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blk-mq-virtio.c
blk-mq: provide a default queue mapping for virtio device
2017-02-27 20:54:05 +02:00
blk-mq.c
blk-mq: reinit q->tag_set_list entry only after grace period
2018-06-26 08:06:32 +08:00
blk-mq.h
blk-mq: fix sysfs inflight counter
2018-06-21 04:02:49 +09:00
blk-settings.c
block: Warn if blk_queue_rq_timed_out() is called for a blk-mq queue
2017-08-23 12:02:30 -06:00
blk-softirq.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blk-stat.c
blk-stat: don't use this_cpu_ptr() in a preemptable section
2017-05-10 07:40:18 -06:00
blk-stat.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blk-sysfs.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blk-tag.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blk-throttle.c
block-throttle: avoid double charge
2017-12-29 17:53:47 +01:00
blk-timeout.c
block: Fix a race between blk_cleanup_queue() and timeout handling
2017-11-30 08:40:52 +00:00
blk-wbt.c
blk-wbt: account flush requests correctly
2018-02-22 15:42:29 +01:00
blk-wbt.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blk-zoned.c
blkdev_report_zones_ioctl(): Use vmalloc() to allocate large buffers
2018-06-16 09:45:14 +02:00
blk.h
block: drain queue before waiting for q_usage_counter becoming zero
2018-03-03 10:24:35 +01:00
bounce.c
block: don't let passthrough IO go into .make_request_fn()
2018-01-02 20:31:05 +01:00
bsg-lib.c
bsg-lib: fix use-after-free under memory-pressure
2017-10-04 08:35:04 -06:00
bsg.c
bsg: remove #if 0'ed code
2017-08-29 10:50:30 -06:00
cfq-iosched.c
block/cfq: cache rightmost rb_node
2017-09-08 18:26:49 -07:00
cmdline-parser.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_ioctl.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
deadline-iosched.c
block, scheduler: convert xxx_var_store to void
2017-08-28 10:01:08 -06:00
elevator.c
block: fix warning when I/O elevator is changed as request_queue is being removed
2017-08-28 10:52:44 -06:00
genhd.c
blk-mq: fix sysfs inflight counter
2018-06-21 04:02:49 +09:00
ioctl.c
block: remove the discard_zeroes_data flag
2017-04-08 11:25:38 -06:00
ioprio.c
block: Add fallthrough markers to switch statements
2017-06-21 11:46:07 -06:00
Kconfig
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Kconfig.iosched
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kyber-iosched.c
block: kyber: fix domain token leak during requeue
2018-03-08 22:41:05 -08:00
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mq-deadline.c
mq-deadline: Enable auto-loading when built as module
2017-08-29 10:47:23 -06:00
noop-iosched.c
block: move existing elevator ops to union
2017-01-17 10:03:33 -07:00
opal_proto.h
block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabled
2017-09-11 09:45:52 -06:00
partition-generic.c
blk-mq: fix sysfs inflight counter
2018-06-21 04:02:49 +09:00
scsi_ioctl.c
block: Change argument type of scsi_req_init()
2017-06-20 19:27:14 -06:00
sed-opal.c
block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabled
2017-09-11 09:45:52 -06:00
t10-pi.c
t10-pi: Move opencoded contants to common header
2017-07-03 16:56:25 -06:00