From: Jan Kara <jack@suse.com>
Date: Thu, 20 Aug 2015 12:50:07 +0000 (+0200)
Subject: udf: Don't modify filesystem for read-only mounts
X-Git-Tag: omap-for-v4.3/fixes-rc1~108^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9181f8bf5abf4b9d59b12e878895375b84fe32ba;p=pandora-kernel.git

udf: Don't modify filesystem for read-only mounts

When read-write mount of a filesystem is requested but we find out we
can mount the filesystem only in read-only mode, we still modify
LVID in udf_close_lvid(). That is both unnecessary and contrary to
expectation that when we fall back to read-only mount we don't modify
the filesystem.

Make sure we call udf_close_lvid() only if we called udf_open_lvid() so
that filesystem gets modified only if we verified we are allowed to
write to it.

Reported-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Jan Kara <jack@suse.com>
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