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Jens Axboe c21de862da block: add cond_resched() to potentially long running ioctl discard loop 
commit c8123f8c9c upstream.

When mkfs issues a full device discard and the device only
supports discards of a smallish size, we can loop in
blkdev_issue_discard() for a long time. If preempt isn't enabled,
this can turn into a softlock situation and the kernel will
start complaining.

Add an explicit cond_resched() at the end of the loop to avoid
that.

Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22 13:34:57 -08:00
..
partitions block/partitions/efi.c: fix bound check 2013-11-21 16:42:27 -08:00
blk-cgroup.c Merge branch 'for-3.12/core' of git://git.kernel.dk/linux-block 2013-09-22 15:00:11 -07:00
blk-cgroup.h Update of blkg_stat and blkg_rwstat may happen in bh context. 2013-11-20 15:33:04 -07:00
blk-core.c Merge branch 'blk-mq/core' into for-3.13/core 2013-11-08 09:08:12 -07:00
blk-exec.c blk-mq: new multi-queue block IO queueing mechanism 2013-10-25 11:56:00 +01:00
blk-flush.c block: submit_bio_wait() conversions 2013-11-24 16:33:41 -07:00
blk-integrity.c scatterlist: introduce sg_unmark_end 2013-03-20 15:43:04 +10:30
blk-ioc.c block: cleanup removing dependency on bootmem headers 2013-11-08 19:43:48 -07:00
blk-iopoll.c block: Replace __get_cpu_var uses 2013-11-08 08:59:58 -07:00
blk-lib.c block: add cond_resched() to potentially long running ioctl discard loop 2014-02-22 13:34:57 -08:00
blk-map.c block: re-use existing 'reading' variable instead of checking direction again 2011-12-21 15:27:24 +01:00
blk-merge.c blk-mq: don't disallow request merges for req->special being set 2013-10-29 12:11:47 -06:00
blk-mq-cpu.c blk-mq: remove newly added instances of __cpuinit 2013-11-14 08:26:02 -07:00
blk-mq-cpumap.c blk-mq: new multi-queue block IO queueing mechanism 2013-10-25 11:56:00 +01:00
blk-mq-sysfs.c block: fix memory leaks on unplugging block device 2013-12-06 09:18:02 -07:00
blk-mq-tag.c percpu_ida: Make percpu_ida_alloc + callers accept task state bitmask 2014-02-13 13:55:36 -08:00
blk-mq-tag.h blk-mq: new multi-queue block IO queueing mechanism 2013-10-25 11:56:00 +01:00
blk-mq.c blk-mq: fix use-after-free of request 2013-12-05 10:50:39 -07:00
blk-mq.h blk-mq: new multi-queue block IO queueing mechanism 2013-10-25 11:56:00 +01:00
blk-settings.c Merge branch 'for-3.13/core' of git://git.kernel.dk/linux-block 2013-11-14 12:08:14 +09:00
blk-softirq.c kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
blk-sysfs.c kernel: remove CONFIG_USE_GENERIC_SMP_HELPERS 2013-11-15 09:32:22 +09:00
blk-tag.c block: Reserve only one queue tag for sync IO if only 3 tags are available 2013-06-28 21:32:27 +02:00
blk-throttle.c block: Use u64_stats_init() to initialize seqcounts 2013-11-13 13:54:08 +01:00
blk-timeout.c Merge branch 'blk-mq/core' into for-3.13/core 2013-11-08 09:08:12 -07:00
blk.h block: __elv_next_request() shouldn't call into the elevator if bypassing 2014-02-22 13:34:56 -08:00
bsg-lib.c bsg: Remove unused function bsg_goose_queue() 2012-12-06 14:33:02 +01:00
bsg.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
cfq-iosched.c block: Use u64_stats_init() to initialize seqcounts 2013-11-13 13:54:08 +01:00
cmdline-parser.c block: support embedded device command line partition 2013-09-11 15:56:57 -07:00
compat_ioctl.c kernel-wide: fix missing validations on __get/__put/__copy_to/__copy_from_user() 2013-09-11 15:58:18 -07:00
deadline-iosched.c block: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...) 2013-09-11 13:22:03 -06:00
elevator.c elevator: acquire q->sysfs_lock in elevator_change() 2013-11-08 09:00:13 -07:00
genhd.c block: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...) 2013-09-11 13:22:03 -06:00
ioctl.c block: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO 2013-11-08 09:05:31 -07:00
Kconfig block: change config option name for cmdline partition parsing 2013-09-30 14:31:02 -07:00
Kconfig.iosched blkcg: make CONFIG_BLK_CGROUP bool 2012-03-06 21:27:21 +01:00
Makefile blk-mq: new multi-queue block IO queueing mechanism 2013-10-25 11:56:00 +01:00
noop-iosched.c elevator: Fix a race in elevator switching 2013-07-03 13:25:24 +02:00
partition-generic.c Revert "loop: cleanup partitions when detaching loop device" 2013-04-08 10:12:11 +02:00
scsi_ioctl.c block: Use rw_copy_check_uvector() 2013-11-08 09:02:14 -07:00