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MFC r277492 (by will): Add vfs.zfs.reference_tracking_enable sysctl/tunable.
authormav <mav@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Sun, 20 Mar 2016 19:07:12 +0000 (19:07 +0000)
committermav <mav@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Sun, 20 Mar 2016 19:07:12 +0000 (19:07 +0000)
commitf0f6fdeb890996e1c6985433fbacc7a55d4d2ad5
tree18e6d379250d33d5c282df57979781e2dffc4bbe
parent540ba24be1092cfbeafa413929feae5d07a33f50
MFC r277492 (by will): Add vfs.zfs.reference_tracking_enable sysctl/tunable.

This is primarily for developer/debugging use; it enables built-in tagged
tracking of refcounts inside ZFS.  It can only be enabled from the loader,
since it modifies how in-core state is managed.  Default remains disabled.

git-svn-id: svn://svn.freebsd.org/base/stable/10@297073 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/refcount.c