linux-ext4 - Re: Extended file stat: Splitting file- and fs-specific info?

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Message-Id: <20120510171016.B45BA2C096@topped-with-meat.com>
Date:	Thu, 10 May 2012 10:10:16 -0700 (PDT)
From:	Roland McGrath <roland@...k.frob.com>
To:	David Howells <dhowells@...hat.com>
Cc:	Andreas Dilger <aedilger@...il.com>,
	Dave Chinner <david@...morbit.com>,
	"adilger@...ger.ca" <adilger@...ger.ca>,
	"bfields@...ldses.org" <bfields@...ldses.org>,
	"smfrench@...il.com" <smfrench@...il.com>,
	"ben@...adent.org.uk" <ben@...adent.org.uk>,
	"Trond.Myklebust@...app.com" <Trond.Myklebust@...app.com>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	"linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>,
	"linux-cifs@...r.kernel.org" <linux-cifs@...r.kernel.org>,
	"samba-technical@...ts.samba.org" <samba-technical@...ts.samba.org>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	"linux-api@...r.kernel.org" <linux-api@...r.kernel.org>,
	"libc-alpha@...rceware.org" <libc-alpha@...rceware.org>
Subject: Re: Extended file stat: Splitting file- and fs-specific info?

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

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