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Jens Axboe 732fd460bb block: ensure bdi->io_pages is always initialized 
[ Upstream commit de1b0ee490eafdf65fac9eef9925391a8369f2dc ]

If a driver leaves the limit settings as the defaults, then we don't
initialize bdi->io_pages. This means that file systems may need to
work around bdi->io_pages == 0, which is somewhat messy.

Initialize the default value just like we do for ->ra_pages.

Cc: stable@vger.kernel.org
Fixes: 9491ae4aad ("mm: don't cap request size based on read-ahead setting")
Reported-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-09-12 13:40:22 +02:00
..
partitions partitions/aix: append null character to print data from disk 2018-07-27 09:17:41 -06:00
badblocks.c badblocks: fix wrong return value in badblocks_set if badblocks are disabled 2017-11-03 11:29:50 -07:00
bfq-cgroup.c block, bfq: fix overwrite of bfq_group pointer in bfq_find_set_group() 2020-03-25 08:06:08 +01:00
bfq-iosched.c block, bfq: fix use-after-free in bfq_idle_slice_timer_body 2020-04-17 10:48:42 +02:00
bfq-iosched.h block, bfq: inject other-queue I/O into seeky idle queues on NCQ flash 2019-11-20 18:46:44 +01:00
bfq-wf2q.c block, bfq: correctly charge and reset entity service in all cases 2018-11-13 11:08:28 -08:00
bio-integrity.c block: release bip in a right way in error path 2020-07-16 08:17:23 +02:00
bio.c block: do not leak memory in bio_copy_user_iov() 2019-04-17 08:38:51 +02:00
blk-cgroup.c blkcg: make blkcg_print_stat() print stats only for online blkgs 2019-11-12 19:21:19 +01:00
blk-core.c block: ensure bdi->io_pages is always initialized 2020-09-12 13:40:22 +02:00
blk-exec.c blk-mq-sched: remove unused 'can_block' arg from blk_mq_sched_insert_request 2018-01-17 09:49:21 -07:00
blk-flush.c block: fix null pointer dereference in blk_mq_rq_timed_out() 2019-10-05 13:10:08 +02:00
blk-integrity.c block drivers/block: Use octal not symbolic permissions 2018-05-24 13:38:59 -06:00
blk-ioc.c block: Fix use-after-free issue accessing struct io_cq 2020-04-17 10:48:41 +02:00
blk-iolatency.c blk-iolatency: fix STS_AGAIN handling 2019-09-16 08:21:41 +02:00
blk-lib.c block: fix 32 bit overflow in __blkdev_issue_discard() 2020-02-01 09:37:12 +00:00
blk-map.c block: fix memleak when __blk_rq_map_user_iov() is failed 2020-01-12 12:17:22 +01:00
blk-merge.c block: don't use bio->bi_vcnt to figure out segment number 2020-01-27 14:50:23 +01:00
blk-mq-cpumap.c blk-mq: don't keep offline CPUs mapped to hctx 0 2018-04-10 08:38:46 -06:00
blk-mq-debugfs-zoned.c block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n 2018-07-09 09:07:52 -06:00
blk-mq-debugfs.c block, scsi: Change the preempt-only flag into a counter 2019-08-04 09:30:57 +02:00
blk-mq-debugfs.h block: Make struct request_queue smaller for CONFIG_BLK_DEV_ZONED=n 2018-07-09 09:07:52 -06:00
blk-mq-pci.c blk-mq: code clean-up by adding an API to clear set->mq_map 2018-07-09 09:07:53 -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: order adding requests to hctx->dispatch and checking SCHED_RESTART 2020-09-03 11:24:26 +02:00
blk-mq-sched.h block: mq-deadline: Fix write completion handling 2019-01-13 09:51:07 +01:00
blk-mq-sysfs.c blk-mq: make sure that line break can be printed 2019-12-17 20:35:48 +01:00
blk-mq-tag.c blk-mq: Allow blocking queue tag iter callbacks 2018-09-25 20:17:59 -06:00
blk-mq-tag.h Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block 2017-11-14 15:32:19 -08:00
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: order adding requests to hctx->dispatch and checking SCHED_RESTART 2020-09-03 11:24:26 +02:00
blk-mq.h blk-mq: free hw queue's resource in hctx's release handler 2019-09-16 08:22:13 +02:00
blk-rq-qos.c blk-wbt: fix performance regression in wbt scale_up/scale_down 2019-10-17 13:45:16 -07:00
blk-rq-qos.h blk-rq-qos: fix first node deletion of rq_qos_del() 2019-10-29 09:20:09 +01:00
blk-settings.c block: keep bdi->io_pages in sync with max_sectors_kb for stacked devices 2020-04-17 10:48:39 +02:00
blk-softirq.c block: fix timeout changes for legacy request drivers 2018-06-19 11:27:18 -06:00
blk-stat.c blk-stat: export helpers for modifying blk_rq_stat 2018-07-09 09:07:54 -06:00
blk-stat.h block: deactivate blk_stat timer in wbt_disable_default() 2019-01-13 09:51:06 +01:00
blk-sysfs.c block: call rq_qos_exit() after queue is frozen 2019-12-01 09:17:06 +01:00
blk-tag.c for-linus-20180616 2018-06-17 05:37:55 +09:00
blk-throttle.c blk-throttle: fix zero wait time for iops throttled group 2019-07-26 09:14:30 +02:00
blk-timeout.c blk-mq: Fix timeout handling in case the timeout handler returns BLK_EH_DONE 2018-06-23 10:25:45 -06:00
blk-wbt.c blk-wbt: fix performance regression in wbt scale_up/scale_down 2019-10-17 13:45:16 -07:00
blk-wbt.h block: remove external dependency on wbt_flags 2018-07-09 09:07:54 -06:00
blk-zoned.c block: Remove a superfluous cast from blkdev_report_zones() 2018-07-09 09:07:52 -06:00
blk.h block: fix null pointer dereference in blk_mq_rq_timed_out() 2019-10-05 13:10:08 +02:00
bounce.c block: copy ioprio in __bio_clone_fast() and bounce 2018-12-01 09:37:32 +01:00
bsg-lib.c block/bsg-lib: use PTR_ERR_OR_ZERO to simplify the flow path 2018-08-01 09:13:03 -06:00
bsg.c block: bsg: move atomic_t ref_count variable to refcount API 2018-08-27 19:17:02 -06:00
cfq-iosched.c cfq: Suppress compiler warnings about comparisons 2018-08-07 17:57:13 -06:00
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 compat_ioctl: block: handle BLKREPORTZONE/BLKRESETZONE 2020-01-09 10:19:01 +01:00
deadline-iosched.c block drivers/block: Use octal not symbolic permissions 2018-05-24 13:38:59 -06:00
elevator.c block: fix deadline elevator drain for zoned block devices 2018-09-26 19:57:24 -06:00
genhd.c block: fix use-after-free on gendisk 2019-05-31 06:46:18 -07:00
ioctl.c block: pass inclusive 'lend' parameter to truncate_inode_pages_range 2018-02-23 15:20:19 -07:00
ioprio.c block: add ioprio_check_cap function 2018-05-31 10:50:54 -04:00
Kconfig block: introduce blk-iolatency io controller 2018-07-09 09:07:54 -06:00
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: make kyber more friendly with merging 2018-05-30 10:47:40 -06:00
Makefile block: introduce blk-iolatency io controller 2018-07-09 09:07:54 -06:00
mq-deadline.c block: mq-deadline: Fix queue restart handling 2019-10-07 18:57:19 +02:00
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 block: fix use-after-free on gendisk 2019-05-31 06:46:18 -07:00
scsi_ioctl.c block: consistently use GFP_NOIO instead of __GFP_NORECLAIM 2018-05-14 08:55:18 -06:00
sed-opal.c block: sed-opal: fix IOC_OPAL_ENABLE_DISABLE_MBR 2019-05-31 06:46:24 -07:00
t10-pi.c block: move dif_prepare/dif_complete functions to block layer 2018-07-30 08:27:02 -06:00