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path: root/drivers/md/dm-bufio.c
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Diffstat (limited to 'drivers/md/dm-bufio.c')
-rw-r--r--drivers/md/dm-bufio.c18
1 files changed, 7 insertions, 11 deletions
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index 83cc52eaf..2dd33085b 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -1598,11 +1598,11 @@ struct dm_bufio_client *dm_bufio_client_create(struct block_device *bdev, unsign
c->bdev = bdev;
c->block_size = block_size;
- c->sectors_per_block_bits = ffs(block_size) - 1 - SECTOR_SHIFT;
- c->pages_per_block_bits = (ffs(block_size) - 1 >= PAGE_SHIFT) ?
- ffs(block_size) - 1 - PAGE_SHIFT : 0;
- c->blocks_per_page_bits = (ffs(block_size) - 1 < PAGE_SHIFT ?
- PAGE_SHIFT - (ffs(block_size) - 1) : 0);
+ c->sectors_per_block_bits = __ffs(block_size) - SECTOR_SHIFT;
+ c->pages_per_block_bits = (__ffs(block_size) >= PAGE_SHIFT) ?
+ __ffs(block_size) - PAGE_SHIFT : 0;
+ c->blocks_per_page_bits = (__ffs(block_size) < PAGE_SHIFT ?
+ PAGE_SHIFT - __ffs(block_size) : 0);
c->aux_size = aux_size;
c->alloc_callback = alloc_callback;
@@ -1861,12 +1861,8 @@ static void __exit dm_bufio_exit(void)
cancel_delayed_work_sync(&dm_bufio_work);
destroy_workqueue(dm_bufio_wq);
- for (i = 0; i < ARRAY_SIZE(dm_bufio_caches); i++) {
- struct kmem_cache *kc = dm_bufio_caches[i];
-
- if (kc)
- kmem_cache_destroy(kc);
- }
+ for (i = 0; i < ARRAY_SIZE(dm_bufio_caches); i++)
+ kmem_cache_destroy(dm_bufio_caches[i]);
for (i = 0; i < ARRAY_SIZE(dm_bufio_cache_names); i++)
kfree(dm_bufio_cache_names[i]);