From d759bfa4e7919b89357de50a2e23817079889195 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Thu, 25 Jul 2013 19:10:59 +0200
Subject: [PATCH] udf: Standardize return values in mount sequence

Change all function used in filesystem discovery during mount to user
standard kernel return values - -errno on error, 0 on success instead
of 1 on failure and 0 on success. This allows us to pass error number
(not just failure / success) so we can abort device scanning earlier
in case of errors like EIO or ENOMEM . Also we will be able to return
EROFS in case writeable mount is requested but writing isn't supported.

Signed-off-by: Jan Kara <jack@suse.cz>
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