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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-04 21:19:53 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-04 21:19:53 -0800
commite0700ce70921fbe3d1913968c663beb9df2b01a9 (patch)
tree8f8163dbdce74942a6ebe849c43c4fdcf2b52799 /drivers/md/dm-bufio.c
parentac322de6bf5416cb145b58599297b8be73cd86ac (diff)
parentaad9ae4550755edc020b5c511a8b54f0104b2f47 (diff)
downloadlinux-e0700ce70921fbe3d1913968c663beb9df2b01a9.tar.bz2
Merge tag 'dm-4.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer: "Smaller set of DM changes for this merge. I've based these changes on Jens' for-4.4/reservations branch because the associated DM changes required it. - Revert a dm-multipath change that caused a regression for unprivledged users (e.g. kvm guests) that issued ioctls when a multipath device had no available paths. - Include Christoph's refactoring of DM's ioctl handling and add support for passing through persistent reservations with DM multipath. - All other changes are very simple cleanups" * tag 'dm-4.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm switch: simplify conditional in alloc_region_table() dm delay: document that offsets are specified in sectors dm delay: capitalize the start of an delay_ctr() error message dm delay: Use DM_MAPIO macros instead of open-coded equivalents dm linear: remove redundant target name from error messages dm persistent data: eliminate unnecessary return values dm: eliminate unused "bioset" process for each bio-based DM device dm: convert ffs to __ffs dm: drop NULL test before kmem_cache_destroy() and mempool_destroy() dm: add support for passing through persistent reservations dm: refactor ioctl handling Revert "dm mpath: fix stalls when handling invalid ioctls" dm: initialize non-blk-mq queue data before queue is used
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 83cc52eaf56d..2dd33085b331 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]);