From d8bd504ab800c8e9aadb983914a33e7166320bec Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 23 Apr 2009 08:54:02 +0100 Subject: [PATCH] GFS2: Fix bug in block allocation The new bitfit algorithm was counting from the wrong end of 64 bit words in the bitfield. This fixes it by using __ffs64 instead of fls64 Signed-off-by: Steven Whitehouse --- fs/gfs2/rgrp.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index f03d024038ea..c9786a46cdfc 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -212,8 +212,7 @@ static u32 gfs2_bitfit(const u8 *buf, const unsigned int len, if (tmp == 0) return BFITNOENT; ptr--; - bit = fls64(tmp); - bit--; /* fls64 always adds one to the bit count */ + bit = __ffs64(tmp); bit /= 2; /* two bits per entry in the bitmap */ return (((const unsigned char *)ptr - buf) * GFS2_NBBY) + bit; } -- 2.20.1