tree 6ec57ed9730f555b29b94aeb6983b4ddbebffe51
parent d75afeb3d302019527331520a2632b6614425b40
author Dave Chinner <dchinner@redhat.com> 1364965890 +1100
committer Ben Myers <bpm@sgi.com> 1367085718 -0500

xfs: buffer type overruns blf_flags field

The buffer type passed to log recvoery in the buffer log item
overruns the blf_flags field. I had assumed that flags field was a
32 bit value, and it turns out it is a unisgned short. Therefore
having 19 flags doesn't really work.

Convert the buffer type field to numeric value, and use the top 5
bits of the flags field for it. We currently have 17 types of
buffers, so using 5 bits gives us plenty of room for expansion in
future....

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>