From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx142.postini.com [74.125.245.142]) by kanga.kvack.org (Postfix) with SMTP id 05AB26B0062 for ; Tue, 27 Nov 2012 11:03:07 -0500 (EST) From: Jeff Moyer Subject: O_DIRECT on tmpfs (again) Date: Tue, 27 Nov 2012 11:03:03 -0500 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org List-ID: To: Hugh Dickins Cc: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Hi Hugh and others, In 2007, there were some discussions on whether to allow opens to specify O_DIRECT for files backed by tmpfs.[1][2] On the surface, it sounds like a completely crazy thing to do. However, distributions like Fedora are now defaulting to using a tmpfs /tmp. I'm not aware of any applications that open temp files using O_DIRECT, but I wanted to get some new discussion going on whether this is a reasonable thing to expect to work. Thoughts? Cheers, Jeff [1] https://lkml.org/lkml/2007/1/4/55 [2] http://thread.gmane.org/gmane.linux.kernel/482031 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org