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19768f80cf
twx-linux/drivers/block
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Ming Lei 19768f80cf block: null_blk: only set set->nr_maps as 3 if active poll_queues is > 0 
It isn't correct to set set->nr_maps as 3 if g_poll_queues is > 0 since
we can change it via configfs for null_blk device created there, so only
set it as 3 if active poll_queues is > 0.

Fixes divide zero exception reported by Shinichiro.

Fixes: 2bfdbe8b7ebd ("null_blk: allow zero poll queues")
Reported-by: Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Link: https://lore.kernel.org/r/20211224010831.1521805-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-12-23 22:05:50 -07:00
..
aoe block: aoe: fixup coccinelle warnings 2021-10-21 08:54:15 -06:00
drbd drbd: Use struct_group() to zero algs 2021-12-13 16:31:24 -07:00
mtip32xx mtip32xx: convert to generic power management 2021-12-14 06:59:20 -07:00
null_blk block: null_blk: only set set->nr_maps as 3 if active poll_queues is > 0 2021-12-23 22:05:50 -07:00
paride block: remove the gendisk argument to blk_execute_rq 2021-11-29 06:41:29 -07:00
rnbd block: remove the ->rq_disk field in struct request 2021-11-29 06:41:29 -07:00
xen-blkback block: remove GENHD_FL_CD 2021-11-29 06:35:21 -07:00
zram block: remove GENHD_FL_EXT_DEVT 2021-11-29 06:38:35 -07:00
amiflop.c block: remove the ->rq_disk field in struct request 2021-11-29 06:41:29 -07:00
ataflop.c block: remove the ->rq_disk field in struct request 2021-11-29 06:41:29 -07:00
brd.c block: remove GENHD_FL_EXT_DEVT 2021-11-29 06:38:35 -07:00
floppy.c floppy: Add max size check for user space request 2021-12-03 06:32:40 -07:00
Kconfig block: remove the rsxx driver 2021-12-16 10:57:04 -07:00
loop.c loop: make autoclear operation asynchronous 2021-12-13 11:37:31 -07:00
loop.h loop: make autoclear operation asynchronous 2021-12-13 11:37:31 -07:00
Makefile block: remove the rsxx driver 2021-12-16 10:57:04 -07:00
n64cart.c block: rename GENHD_FL_NO_PART_SCAN to GENHD_FL_NO_PART 2021-11-29 06:35:21 -07:00
nbd.c for-5.16/drivers-2021-11-09 2021-11-09 11:24:08 -08:00
pktcdvd.c pktdvd: stop using bdi congestion framework. 2021-12-09 21:31:56 -07:00
ps3disk.c ps3disk: add error handling support for add_disk() 2021-10-30 11:03:37 -06:00
ps3vram.c block: remove GENHD_FL_EXT_DEVT 2021-11-29 06:38:35 -07:00
rbd_types.h libceph, rbd: replace zero-length array with flexible-array 2020-06-01 13:22:53 +02:00
rbd.c block: remove GENHD_FL_EXT_DEVT 2021-11-29 06:38:35 -07:00
sunvdc.c block: remove the ->rq_disk field in struct request 2021-11-29 06:41:29 -07:00
swim3.c block: remove GENHD_FL_EXT_DEVT 2021-11-29 06:38:35 -07:00
swim_asm.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
swim.c block: remove GENHD_FL_EXT_DEVT 2021-11-29 06:38:35 -07:00
sx8.c block: remove the gendisk argument to blk_execute_rq 2021-11-29 06:41:29 -07:00
virtio_blk.c block: remove the gendisk argument to blk_execute_rq 2021-11-29 06:41:29 -07:00
xen-blkfront.c block: remove GENHD_FL_CD 2021-11-29 06:35:21 -07:00
z2ram.c block: remove GENHD_FL_EXT_DEVT 2021-11-29 06:38:35 -07:00