Konstantin Belousov c79dff0fbe Split the global taskqueue used to process all UFS trim completions, ... into per-mount taskqueue with the private taskqueue processing thread. This allows to drain the taskqueue on unmount, to ensure that all TRIMs are finished before mount structures are freed. But just draining the taskqueue where TRIM biodone geom-up completions are processed is not enough, since ffs_blkfree(), called by the task, might result in more writes. Count inflight delayed blkfree's and pause() unmount until the counter drains as well. Reported by: Nick Evans <nevans@talkpoint.com> Tested by: Nick Evans <nevans@talkpoint.com>, pho Sponsored by: The FreeBSD Foundation MFC after: 2 weeks		2016-03-27 08:21:17 +00:00
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ffs	Split the global taskqueue used to process all UFS trim completions,	2016-03-27 08:21:17 +00:00
ufs	Split the global taskqueue used to process all UFS trim completions,	2016-03-27 08:21:17 +00:00