Date: Mon, 12 Oct 2009 15:32:00 +0000 (UTC) From: Attilio Rao <attilio@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern kern_lock.c kern_rwlock.c kern_sx.c src/sys/sys rwlock.h sx.h Message-ID: <200910121532.n9CFWqvf038503@repoman.freebsd.org>
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attilio 2009-10-12 15:32:00 UTC FreeBSD src repository Modified files: (Branch: RELENG_8) sys/kern kern_lock.c kern_rwlock.c kern_sx.c sys/sys rwlock.h sx.h Log: SVN rev 197981 on 2009-10-12 15:32:00Z by attilio MFC r197643, r197735: When releasing a read/shared lock we need to use a write memory barrier in order to avoid, on architectures which doesn't have strong ordered writes, CPU instructions reordering. Approved by: re (kib) Revision Changes Path 1.144.2.5 +3 -3 src/sys/kern/kern_lock.c 1.48.2.5 +4 -3 src/sys/kern/kern_rwlock.c 1.67.2.6 +4 -4 src/sys/kern/kern_sx.c 1.21.2.2 +0 -7 src/sys/sys/rwlock.h 1.42.2.2 +1 -8 src/sys/sys/sx.h
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