Commit 8fb980e3 authored by Akinobu Mita's avatar Akinobu Mita Committed by Linus Torvalds
Browse files

dm: use memweight()



Use memweight() to count the total number of bits set in memory area.
Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Cc: Alasdair Kergon <agk@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 9b58f6d4
......@@ -571,16 +571,6 @@ static void disk_dtr(struct dm_dirty_log *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_log *log)
/* 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 */
......
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