Date: Fri, 13 Jul 2001 21:00:25 +0900 From: Seigo Tanimura <tanimura@r.dl.itc.u-tokyo.ac.jp> To: bright@sneakerz.org Cc: tanimura@r.dl.itc.u-tokyo.ac.jp, jake@FreeBSD.org, jhb@FreeBSD.org, current@FreeBSD.org Subject: Re: Lock of struct filedesc, file, pgrp, session and sigio Message-ID: <200107131200.f6DC0Pt05497@rina.r.dl.itc.u-tokyo.ac.jp> In-Reply-To: In your message of "Fri, 13 Jul 2001 19:49:25 %2B0900" <200107131049.f6DAnPt95755@rina.r.dl.itc.u-tokyo.ac.jp> References: <20010602125223.J31257@dragon.nuxi.com> <200106040748.f547mUD53783@rina.r.dl.itc.u-tokyo.ac.jp> <200106181004.f5IA4VD63112@rina.r.dl.itc.u-tokyo.ac.jp> <200107020812.f628CfK44241@rina.r.dl.itc.u-tokyo.ac.jp> <20010707164249.C88962@sneakerz.org> <20010709032044.B1894@sneakerz.org> <200107100845.f6A8jqt99404@rina.r.dl.itc.u-tokyo.ac.jp> <20010710035347.Q1894@sneakerz.org> <200107100903.f6A93et02367@rina.r.dl.itc.u-tokyo.ac.jp> <200107111137.f6BBbQt22812@rina.r.dl.itc.u-tokyo.ac.jp> <20010713042504.O6664@sneakerz.org> <200107131049.f6DAnPt95755@rina.r.dl.itc.u-tokyo.ac.jp>
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On Fri, 13 Jul 2001 19:49:25 +0900, Seigo Tanimura <tanimura> said: Alfred> Certain operations, such as: Alfred> kq = (struct kqueue *)fp->f_data; Alfred> should not really require that the file be locked, it's implicitly frozen Alfred> at creation time (i think) Seigo> Yes. Only one exception beats off everything. union_dircheck() in fs/unionfs/union_subr.c may replace f_data with a new vnode. -- Seigo Tanimura <tanimura@r.dl.itc.u-tokyo.ac.jp> <tanimura@FreeBSD.org> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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