Ryan Stone 6969ef6656 Correct a series of errors in the hand-rolled locking for drace_debug.c: ... - Use spinlock_enter()/spinlock_exit() to prevent a thread holding a debug lock from being preempted to prevent other threads waiting on that lock from starvation. - Handle the possibility of CPU migration in between the fetch of curcpu and the call to spinlock_enter() by saving curcpu in a local variable. - Use memory barriers to prevent reordering of loads and stores of the data protected by the lock outside of the critical section - Eliminate false sharing of the locks by moving them into the structures that they protect and aligning them to a cacheline boundary. - Record the owning thread in the lock to make debugging future problems easier. Reviewed by: rpaulo (initial version) MFC after: 2 weeks		2012-12-23 15:50:37 +00:00
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boot/zfs	forgotten file from r240346	2012-09-11 08:45:49 +00:00
compat/opensolaris	Renamed zfs trim stats removing duplicate zio_trim identifier from the name	2012-12-12 16:14:14 +00:00
contrib/opensolaris	Added vfs.zfs.vdev.trim_on_init sysctl which allows full vdev trim on	2012-12-13 17:39:07 +00:00
dev	Correct a series of errors in the hand-rolled locking for drace_debug.c:	2012-12-23 15:50:37 +00:00