On 25/02/2017 18:45, Andriy Gapon wrote: > Author: avg > Date: Sat Feb 25 16:45:53 2017 > New Revision: 314273 > URL: https://svnweb.freebsd.org/changeset/base/314273 > > Log: > zfs: call spa_deadman on a taskqueue thread > > callout(9) prohibits callout functions from sleeping. > illumos mutexes are emulated using sx(9). > spa_deadman() calls vdev_deadman() and the latter acquires vq_lock. > > As a result we can get a more confusing panic instead of a specific > panic or no panic: > sleepq_add: td 0xfffff80019669960 to sleep on wchan 0xfffff8001cff4d88 with > sleeping prohibited > > This change adds another level of indirection where the deadman > callout schedules spa_deadman() to be executed on taskqueue_thread. > > While there, use callout_schedule(0 instead of callout_reset() > in spa_sync(). > > Discussed with: mav > MFC after: 1 week > Differential Revision: https://reviews.freebsd.org/D9762
Sponsored by: Panzura -- Andriy Gapon _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
