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Commit c2923c3a authored by Akinobu Mita's avatar Akinobu Mita Committed by Linus Torvalds
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hpfs: use hweight32 



Use hweight32 instead of counting for each bit

Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e3c96f53

fs/hpfs/super.c

+2 −5
Original line number Diff line number Diff line
@@ -119,11 +119,8 @@ unsigned hpfs_count_one_bitmap(struct super_block *s, secno secno) 
	unsigned i, count;

	if (!(bits = hpfs_map_4sectors(s, secno, &qbh, 4))) return 0;

	count = 0;

	for (i = 0; i < 2048 / sizeof(unsigned); i++) {

		unsigned b; 

		if (!bits[i]) continue;

		for (b = bits[i]; b; b>>=1) count += b & 1;

	}

	for (i = 0; i < 2048 / sizeof(unsigned); i++)

		count += hweight32(bits[i]);

	hpfs_brelse4(&qbh);

	return count;

}