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smr: add some missed fences.
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Authored by kib on Jan 31 2020, 6:16 PM.
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rS FreeBSD src repository - subversion
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Buildable 29077

Event Timeline

Move release fence before fcmpset, otherwise it is useless.

Noted by jeff.

sys/kern/subr_smr.c
327

what load is this applying to?

336

what is this synchronizing with and why not atomic_fcmpset_rel_int?

This revision was not accepted when it landed; it landed in state Needs Review.Jan 31 2020, 8:31 PM
This revision was automatically updated to reflect the committed changes.
kib updated this revision to Diff 67580.

Remove committed part.