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 <swhiteho@redhat.com>

parent 952043ac

fs/gfs2/rgrp.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -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;
		}