Date: Mon, 3 Nov 2014 11:34:48 +0100 From: Attilio Rao <attilio@freebsd.org> To: Konstantin Belousov <kostikbel@gmail.com> Cc: "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org> Subject: Re: svn commit: r273966 - in head: share/man/man9 sys/kern sys/sys Message-ID: <CAJ-FndBY55kfCeqDTmas7qOEKsAxQ9mFYGy767oDb%2B0LPgzX_Q@mail.gmail.com> In-Reply-To: <20141102224934.GG53947@kib.kiev.ua> References: <20141102163728.GX53947@kib.kiev.ua> <CAJ-FndAeh_i9F98Tq-ZXgX%2Badq4mOgoadSoYJ6hmvYpBtmkvow@mail.gmail.com> <20141102165916.GY53947@kib.kiev.ua> <CAJ-FndAbhBFQ1gD64Wi210zH-0kfxjkkUJRNYHnFnmW%2BKAhm2w@mail.gmail.com> <20141102174958.GZ53947@kib.kiev.ua> <CAJ-FndC_3Te6Y7N0%2B8ZddH8i72cxH%2BACHm=EShHp=QDoX4xSow@mail.gmail.com> <20141102191029.GA53947@kib.kiev.ua> <CAJ-FndBz25uka6Zz%2Bx_bRykJCUQLCPxJoPHidc5FuTtZ=Kfb9w@mail.gmail.com> <20141102213819.GF53947@kib.kiev.ua> <CAJ-FndASC832PTqaVfYqPvFxOdvroxbyT4LaJ8Job6xhiXcE=w@mail.gmail.com> <20141102224934.GG53947@kib.kiev.ua>
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On Sun, Nov 2, 2014 at 11:49 PM, Konstantin Belousov <kostikbel@gmail.com> wrote: > On Sun, Nov 02, 2014 at 11:37:57PM +0100, Attilio Rao wrote: >> On Sun, Nov 2, 2014 at 10:38 PM, Konstantin Belousov >> <kostikbel@gmail.com> wrote: >> > On Sun, Nov 02, 2014 at 10:17:26PM +0100, Attilio Rao wrote: >> >> I think that your initial patch (what is in head now) is a better approach. >> >> I would just make it a lockinit() flag to make it less alien to the KPI. >> >> >> > >> > Ok. >> > >> > Can you explain what would the proposed lockinit() flag do ? What should >> > it change comparing with the current code ? >> >> You now provide LK_NODDLKTREAT on a call basis. >> The lockinit() flag would embed this into the lock attribute and make >> it always real, without the need for the callers to provide >> LK_NODDLKTREAT on a call basis. > > Am I reading your proposal right ? Do you mean, that for all vnodes, > I should disable exclusive starvation avoidance at all ? I completely > disagree with this. No, I'm saying that we should support doing this at the KPI level. Not that you should enable this for all the vnodes. Attilio -- Peace can only be achieved by understanding - A. Einstein
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