From: Paul Clements <paul.clements@steeleye.com>
Date: Tue, 3 Oct 2006 08:16:01 +0000 (-0700)
Subject: [PATCH] md: use ffz instead of find_first_set to convert multiplier to shift
X-Git-Tag: v2.6.19-rc1~235
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a638b2dc951c4cafea31b34a1db1c3d94809649e;p=pandora-kernel.git

[PATCH] md: use ffz instead of find_first_set to convert multiplier to shift

find_first_set doesn't find the least-significant bit on bigendian machines,
so it is really wrong to use it.

ffs is closer, but takes an 'int' and we have a 'unsigned long'.  So use
ffz(~X) to convert a chunksize into a chunkshift.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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