Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx1.redhat.com ([209.132.183.28]:64746 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932268Ab2EJJXu (ORCPT ); Thu, 10 May 2012 05:23:50 -0400 From: David Howells In-Reply-To: <73759631-F1E4-4352-9FE6-E9F576F793FB@gmail.com> References: <73759631-F1E4-4352-9FE6-E9F576F793FB@gmail.com> <20120419140558.17272.74360.stgit@warthog.procyon.org.uk> <16281.1336508382@redhat.com> <20120509002420.GL5091@dastard> To: Andreas Dilger , Dave Chinner Cc: dhowells@redhat.com, "adilger@dilger.ca" , "bfields@fieldses.org" , "smfrench@gmail.com" , "ben@decadent.org.uk" , "Trond.Myklebust@netapp.com" , "roland@hack.frob.com" , "linux-fsdevel@vger.kernel.org" , "linux-nfs@vger.kernel.org" , "linux-cifs@vger.kernel.org" , "samba-technical@lists.samba.org" , "linux-ext4@vger.kernel.org" , "linux-api@vger.kernel.org" , "libc-alpha@sourceware.org" Subject: Re: Extended file stat: Splitting file- and fs-specific info? Date: Thu, 10 May 2012 10:23:14 +0100 Message-ID: <14477.1336641794@redhat.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Andreas Dilger wrote: > The main question I have about these fields is what the difference is > between st_blksize and st_alloc_blksize? I would assume that st_blksize is some ideal I/O size, not the allocation block size. Dave Chinner might be able to answer better as he suggested these I/O information fields. David