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(parent: 5c84ab9) | patch
dm writecache: add cond_resched to avoid CPU hangs
authorMikulas Patocka <mpatocka@redhat.com>
Fri, 27 Mar 2020 11:22:36 +0000 (07:22 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 17 Apr 2020 08:50:17 +0000 (10:50 +0200)
commitbef0d2f5fdcbc39f2c5b321d35d2c8b2f1e99612
tree795b352e06b1b110aa1826935e56f686d520ae10tree | snapshot
parent5c84ab9c96d78dc124cf31d47cf35a8c97c740edcommit | diff
dm writecache: add cond_resched to avoid CPU hangs

commit 1edaa447d958bec24c6a79685a5790d98976fd16 upstream.

Initializing a dm-writecache device can take a long time when the
persistent memory device is large.  Add cond_resched() to a few loops
to avoid warnings that the CPU is stuck.

Cc: stable@vger.kernel.org # v4.18+
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/md/dm-writecache.c diff | blob | history
Domain: System / Kernel;