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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2009-12-15 16:48:24 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-16 07:20:18 -0800 |
| commit | 868d64812ae84e8f094e0bcf95157c7d79d625ec (patch) | |
| tree | d4788544d0ea0143022150eb765f52cb2801073d /fs/qnx4/bitmap.c | |
| parent | ca120b20c32ffabf0e1d4319f65360e920fb4fe2 (diff) | |
| download | lwn-868d64812ae84e8f094e0bcf95157c7d79d625ec.tar.gz lwn-868d64812ae84e8f094e0bcf95157c7d79d625ec.zip | |
qnx4: use hweight8
Use hweight8 instead of counting for each bit
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Anders Larsen <al@alarsen.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/qnx4/bitmap.c')
| -rw-r--r-- | fs/qnx4/bitmap.c | 17 |
1 files changed, 1 insertions, 16 deletions
diff --git a/fs/qnx4/bitmap.c b/fs/qnx4/bitmap.c index a17440bce018..22e0d60e53ef 100644 --- a/fs/qnx4/bitmap.c +++ b/fs/qnx4/bitmap.c @@ -28,22 +28,7 @@ static void count_bits(register const char *bmPart, register int size, } do { b = *bmPart++; - if ((b & 1) == 0) - tot++; - if ((b & 2) == 0) - tot++; - if ((b & 4) == 0) - tot++; - if ((b & 8) == 0) - tot++; - if ((b & 16) == 0) - tot++; - if ((b & 32) == 0) - tot++; - if ((b & 64) == 0) - tot++; - if ((b & 128) == 0) - tot++; + tot += 8 - hweight8(b); size--; } while (size != 0); *tf = tot; |