Date: Mon, 03 Feb 2003 16:23:20 -0500 (EST) From: John Baldwin <jhb@FreeBSD.org> To: Poul-Henning Kamp <phk@FreeBSD.org> Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org Subject: RE: cvs commit: src/sys/fs/msdosfs msdosfs_conv.c src/sys/fs/nwf Message-ID: <XFMail.20030203162320.jhb@FreeBSD.org> In-Reply-To: <200302031949.h13JnZqq029320@repoman.freebsd.org>
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On 03-Feb-2003 Poul-Henning Kamp wrote: > phk 2003/02/03 11:49:35 PST > > Modified files: > sys/fs/msdosfs msdosfs_conv.c > sys/fs/nwfs nwfs_subr.c > sys/fs/smbfs smbfs_subr.c > sys/i386/ibcs2 ibcs2_xenix.c > sys/i386/isa clock.c > sys/kern kern_time.c subr_clock.c > sys/pc98/pc98 clock.c > sys/sys kernel.h > Log: > Split the global timezone structure into two integer fields to > prevent the compiler from optimizing assignments into byte-copy > operations which might make access to the individual fields non-atomic. > > Use the individual fields throughout, and don't bother locking them with > Giant: it is no longer needed. Umm, what's to prevent, say, a sparc64 CPU from being interrupted in between the load, modify, and store instructions? -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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