The patch titled
Subject: dm: use memweight()
has been added to the -mm tree. Its filename is
dm-use-memweight.patch
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------------------------------------------------------
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Subject: dm: use memweight()
Use memweight() to count the total number of bits set in memory area.
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Alasdair Kergon <agk@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/md/dm-log.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff -puN drivers/md/dm-log.c~dm-use-memweight drivers/md/dm-log.c
--- a/drivers/md/dm-log.c~dm-use-memweight
+++ a/drivers/md/dm-log.c
@@ -571,16 +571,6 @@ static void disk_dtr(struct dm_dirty_log
destroy_log_context(lc);
}
-static int count_bits32(uint32_t *addr, unsigned size)
-{
- int count = 0, i;
-
- for (i = 0; i < size; i++) {
- count += hweight32(*(addr+i));
- }
- return count;
-}
-
static void fail_log_device(struct log_c *lc)
{
if (lc->log_dev_failed)
@@ -629,7 +619,8 @@ static int disk_resume(struct dm_dirty_l
/* copy clean across to sync */
memcpy(lc->sync_bits, lc->clean_bits, size);
- lc->sync_count = count_bits32(lc->clean_bits, lc->bitset_uint32_count);
+ lc->sync_count = memweight(lc->clean_bits,
+ lc->bitset_uint32_count * sizeof(uint32_t));
lc->sync_search = 0;
/* set the correct number of regions in the header */
_
Subject: Subject: dm: use memweight()
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
linux-next.patch
ocfs2-use-find_last_bit.patch
ocfs2-use-bitmap_weight.patch
string-introduce-memweight.patch
string-introduce-memweight-fix.patch
qnx4fs-use-memweight.patch
dm-use-memweight.patch
affs-use-memweight.patch
video-uvc-use-memweight.patch
ocfs2-use-memweight.patch
ext2-use-memweight.patch
ext3-use-memweight.patch
ext4-use-memweight.patch
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