From: Roland McGrath Subject: Re: Extended file stat: Splitting file- and fs-specific info? Date: Thu, 10 May 2012 10:10:16 -0700 (PDT) Message-ID: <20120510171016.B45BA2C096@topped-with-meat.com> References: <73759631-F1E4-4352-9FE6-E9F576F793FB@gmail.com> <20120419140558.17272.74360.stgit@warthog.procyon.org.uk> <16281.1336508382@redhat.com> <20120509002420.GL5091@dastard> <14477.1336641794@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: Andreas Dilger , Dave Chinner , "adilger-m1MBpc4rdrD3fQ9qLvQP4Q@public.gmane.org" , "bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org" , "smfrench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org" , "ben-/+tVBieCtBitmTQ+vhA3Yw@public.gmane.org" , "Trond.Myklebust-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org" , "linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "samba-technical-w/Ol4Ecudpl8XjKLYN78aQ@public.gmane.org" , "linux-ext4-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "libc-alpha-9JcytcrH/bA+uJoB2kUjGw@public.gmane.org" To: David Howells Return-path: In-Reply-To: David Howells's message of Thursday, 10 May 2012 10:23:14 +0100 <14477.1336641794-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Sender: linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-ext4.vger.kernel.org POSIX specifies st_blksize thusly: "A file system-specific preferred I/O block size for this object. In some file system types, this may vary from file to file." Since there is only one available to POSIX applications, it should map to the one that's described as "preferred IO size for general usage". Thanks, Roland