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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2012-07-30 14:41:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-30 17:25:16 -0700 |
| commit | a75613ec73ec87726a81fe421385a13c25fdcfc4 (patch) | |
| tree | ce929ce5fd0024483fa6ea3464e95e88a042d86c /fs/ocfs2 | |
| parent | 9a601396e8681d9884a9f429cba7ceb2b2a4d21c (diff) | |
| download | linux-3.10-a75613ec73ec87726a81fe421385a13c25fdcfc4.tar.gz linux-3.10-a75613ec73ec87726a81fe421385a13c25fdcfc4.tar.bz2 linux-3.10-a75613ec73ec87726a81fe421385a13c25fdcfc4.zip | |
ocfs2: use memweight()
Use memweight to count the total number of bits set in memory area.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2')
| -rw-r--r-- | fs/ocfs2/localalloc.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c index 210c3523754..a9f78c74d68 100644 --- a/fs/ocfs2/localalloc.c +++ b/fs/ocfs2/localalloc.c @@ -784,14 +784,10 @@ bail: static u32 ocfs2_local_alloc_count_bits(struct ocfs2_dinode *alloc) { - int i; - u8 *buffer; - u32 count = 0; + u32 count; struct ocfs2_local_alloc *la = OCFS2_LOCAL_ALLOC(alloc); - buffer = la->la_bitmap; - for (i = 0; i < le16_to_cpu(la->la_size); i++) - count += hweight8(buffer[i]); + count = memweight(la->la_bitmap, le16_to_cpu(la->la_size)); trace_ocfs2_local_alloc_count_bits(count); return count; |