Javier González 013b559adf lightnvm: pblk: fix race condition on metadata I/O ... [ Upstream commit d8adaa3b86 ] In pblk, when a new line is allocated, metadata for the previously written line is scheduled. This is done through a fixed memory region that is shared through time and contexts across different lines and therefore protected by a lock. Unfortunately, this lock is not properly covering all the metadata used for sharing this memory regions, resulting in a race condition. This patch fixes this race condition by protecting this metadata properly. Fixes: dd2a434373 ("lightnvm: pblk: sched. metadata on write thread") Signed-off-by: Javier González <javier@cnexlabs.com> Signed-off-by: Matias Bjørling <mb@lightnvm.io> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-11-13 11:08:21 -08:00
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core.c	lightnvm: pass flag on graceful teardown to targets	2018-06-01 07:43:53 -06:00
Kconfig	lightnvm: move NVM_DEBUG to pblk	2018-07-13 08:14:31 -06:00
Makefile	lightnvm: remove rrpc	2018-01-05 08:50:12 -07:00
pblk-cache.c	block: Add and use op_stat_group() for indexing disk_stat fields.	2018-07-18 08:44:20 -06:00
pblk-core.c	lightnvm: pblk: fix race on sysfs line state	2018-11-13 11:08:21 -08:00
pblk-gc.c	lightnvm: pblk: expose generic disk name on pr_* msgs	2018-07-13 08:14:43 -06:00
pblk-init.c	lightnvm: pblk: assume that chunks are closed on 1.2 devices	2018-07-13 08:14:49 -06:00
pblk-map.c	lightnvm: pblk: fail gracefully on line alloc. failure	2018-06-01 07:43:53 -06:00
pblk-rb.c	lightnvm: pblk: expose generic disk name on pr_* msgs	2018-07-13 08:14:43 -06:00
pblk-read.c	block: Add and use op_stat_group() for indexing disk_stat fields.	2018-07-18 08:44:20 -06:00
pblk-recovery.c	lightnvm: pblk: fix two sleep-in-atomic-context bugs	2018-11-13 11:08:21 -08:00
pblk-rl.c	lightnvm: pblk: garbage collect lines with failed writes	2018-06-01 09:02:53 -06:00
pblk-sysfs.c	lightnvm: pblk: fix race on sysfs line state	2018-11-13 11:08:21 -08:00
pblk-write.c	lightnvm: pblk: fix race condition on metadata I/O	2018-11-13 11:08:21 -08:00
pblk.h	lightnvm: pblk: add asynchronous partial read	2018-07-13 08:14:47 -06:00