Date: 14 Apr 1999 07:51:03 -0000 From: Ville-Pertti Keinonen <will@iki.fi> To: thorpej@nas.nasa.gov Cc: hackers@freebsd.org Subject: Re: read() and pread() syscalls Message-ID: <19990414075103.12740.qmail@ns.oeno.com> In-Reply-To: <199904131616.JAA20900@lestat.nas.nasa.gov> (message from Jason Thorpe on Tue, 13 Apr 1999 09:16:07 -0700)
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> > I don't have a NetBSD machine around, but it might apply to NetBSD, as > > well, unless NetBSD keeps the vnode exclusively locked for the entire > > duration of a VOP_READ, even if it blocks. > > There is no need to keep the _vnode_ locked; the file offset is not stored > in the vnode, but in the struct file that references that vnode. Of course, but my assumption was that current *BSD code does not make any explicit attempts to protect f_offset and that it might, in some cases, be protected as a side-effect of vnode locking. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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