1/ Use reduce stack usage, because 'gcc' apparently doesn't overlay
different variables that are in separate scopes...
2/ Use test_bit instead of ( .. & 1<< ..) which in this case is buggy.
Thanks to Andrew Morton
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>