From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [PATCH 2/4] sysfs: Implement sysfs manged shadow directory support. Date: Mon, 30 Jul 2007 23:04:51 +0900 Message-ID: <46ADF003.3010100@suse.de> References: <1182446577.8138.29.camel@localhost> <20070621211637.GB10583@suse.de> <20070622001328.GA14113@suse.de> <20070625212339.GA13398@kroah.com> <46A3B449.3090409@gmail.com> <20070722202508.GA18018@suse.de> <46A425F9.1030008@gmail.com> <46AD8E92.7080002@suse.de> <46ADDC7F.1090306@sw.ru> <46ADE24E.8020502@suse.de> <46ADEE35.8000109@sw.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <46ADEE35.8000109-3ImXcnM4P+0@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Kirill Korotaev Cc: Linux Containers , Greg KH , Greg KH , Dave Hansen , "Eric W. Biederman" List-Id: containers.vger.kernel.org Kirill Korotaev wrote: > Tejun Heo wrote: >> I thought something like supermount plus some twists or fuse based sysfs >> proxy would fit better. Dunno whether or how uevent and polling stuff >> can work that way tho. Note that sysfs no longer keeps dentries and >> inodes pinned. It might make the shared dentry stuff harder. > > We simply don't share sysfs dentries/inodes between containers. > It's not that frequently used time critical fs to be super-optimized... :) OIC, dentries and inodes are not shared. Good then. Agreed that sysfs doesn't need to be super-optimized as long as big machines aren't penalized too much (both memory and cpu cycle wise). > I don't like the idea with fuse, since sysfs exports kernel-related stuff, > so doing it via user-space would be pain. Yeah, it would be cumbersome to setup but it's also fast and easy to toy with for prototypes at least. Thanks. -- tejun