| To: | Jonathan Corbet <corbet@xxxxxxx> |
|---|---|
| Subject: | Re: RFC: Fix f_flags races without the BKL |
| From: | Andi Kleen <andi@xxxxxxxxxxxxxx> |
| Date: | Tue, 30 Dec 2008 15:55:55 +0100 |
| Cc: | Andi Kleen <andi@xxxxxxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>, Al Viro <viro@xxxxxxxxxxxxxxxxxx>, bfields@xxxxxxxxxxxx, xfs-masters@xxxxxxxxxxx |
| In-reply-to: | <20081230055956.1747bd86@tpl> |
| References: | <20081229041352.6bbdf57c@tpl> <20081229124151.GA29634@redhat.com> <20081229152732.GH496@one.firstfloor.org> <20081230055956.1747bd86@tpl> |
| User-agent: | Mutt/1.4.2.1i |
On Tue, Dec 30, 2008 at 05:59:56AM -0700, Jonathan Corbet wrote: > On Mon, 29 Dec 2008 16:27:32 +0100 > Andi Kleen <andi@xxxxxxxxxxxxxx> wrote: > > > I would prefer O_LOCK_FLAGS bit too. The global lock is not very nice > > and I don't doubt someone will come up with a workload which > > pounds on it. > > Seems hard to imagine that it would be worse than the longstanding BKL > situation. As long as noone else uses it too BKL is faster than a mutex. -Andi -- ak@xxxxxxxxxxxxxxx |
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