udf: fix anchor point detection

According to ECMA 167 rev.  3 (see 3/8.4.2.1), Anchor Volume Descriptor
Pointer should be recorded at two or more anchor points located at sectors
256, N, N - 256, where N - is a largest logical sector number at volume
space.

So we should always try to detect N on UDF volume before trying to find
Anchor Volume Descriptor (i.e.  calling to udf_find_anchor()).

That said, all this patch does is updates the s_last_block even if the
udf_vrs() returns positive value.

Originally written and tested by Yuri Per, ported on latest mainline by me.

Signed-off-by: Yuri Per <[email protected]>
Signed-off-by: Pavel Emelyanov <[email protected]>
Cc: Max Lyadvinsky <[email protected]>
Cc: Vladimir Simonov <[email protected]>
Cc: Andrew Neporada <[email protected]>
Cc: Kirill Korotaev <[email protected]>
Signed-off-by: Jan Kara <[email protected]>

0 files changed, 0 insertions, 0 deletions