CVS commit: src/sys/external/bsd/drm2/linux

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Sun Dec 19 01:50:40 UTC 2021

Modified Files:
        src/sys/external/bsd/drm2/linux: linux_dma_fence.c

Log Message:
Issue __insn_barrier in dma_fence_get_rcu.

This way it is safe to use as dma_fence_get_rcu(*p) when concurrent
writes to *p might be happening, so that we load *p only once before
using the value.


To generate a diff of this commit:
cvs rdiff -u -r1.7 -r1.8 src/sys/external/bsd/drm2/linux/linux_dma_fence.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.