tree 66d618e98020422874a521142ca2da797c9930f3
parent 8ef386092d7c2891bd7acefb2a87f878f7e9a0d6
author Jeff Mahoney <jeffm@suse.com> 1159684120 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1159688367 -0700

[PATCH] reiserfs: fix is_reusable bitmap check to not traverse the bitmap info array

There is a check in is_reusable to determine if a particular block is a bitmap
block.  It verifies this by going through the array of bitmap block buffer
heads and comparing the block number to each one.

Bitmap blocks are at defined locations on the disk in both old and current
formats.  Simply checking against the known good values is enough.

This is a trivial optimization for a non-production codepath, but this is the
first in a series of patches that will ultimately remove the buffer heads from
that array.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>