Merge tag 'dm-3.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm

Pull device-mapper update from Alasdair G Kergon:
 "The main addition here is a long-desired target framework to allow an
  SSD to be used as a cache in front of a slower device.  Cache tuning
  is delegated to interchangeable policy modules so these can be
  developed independently of the mechanics needed to shuffle the data
  around.

  Other than that, kcopyd users acquire a throttling parameter, ioctl
  buffer usage gets streamlined, more mempool reliance is reduced and
  there are a few other bug fixes and tidy-ups."

* tag 'dm-3.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm: (30 commits)
  dm cache: add cleaner policy
  dm cache: add mq policy
  dm: add cache target
  dm persistent data: add bitset
  dm persistent data: add transactional array
  dm thin: remove cells from stack
  dm bio prison: pass cell memory in
  dm persistent data: add btree_walk
  dm: add target num_write_bios fn
  dm kcopyd: introduce configurable throttling
  dm ioctl: allow message to return data
  dm ioctl: optimize functions without variable params
  dm ioctl: introduce ioctl_flags
  dm: merge io_pool and tio_pool
  dm: remove unused _rq_bio_info_cache
  dm: fix limits initialization when there are no data devices
  dm snapshot: add missing module aliases
  dm persistent data: set some btree fn parms const
  dm: refactor bio cloning
  dm: rename bio cloning functions
  ...

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 4d6e85367b84..00cee02f8fc9 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -280,7 +280,7 @@ static void unpack_block_time(uint64_t v, dm_block_t *b, uint32_t *t)
 	*t = v & ((1 << 24) - 1);
 }
 
-static void data_block_inc(void *context, void *value_le)
+static void data_block_inc(void *context, const void *value_le)
 {
 	struct dm_space_map *sm = context;
 	__le64 v_le;
@@ -292,7 +292,7 @@ static void data_block_inc(void *context, void *value_le)
 	dm_sm_inc_block(sm, b);
 }
 
-static void data_block_dec(void *context, void *value_le)
+static void data_block_dec(void *context, const void *value_le)
 {
 	struct dm_space_map *sm = context;
 	__le64 v_le;
@@ -304,7 +304,7 @@ static void data_block_dec(void *context, void *value_le)
 	dm_sm_dec_block(sm, b);
 }
 
-static int data_block_equal(void *context, void *value1_le, void *value2_le)
+static int data_block_equal(void *context, const void *value1_le, const void *value2_le)
 {
 	__le64 v1_le, v2_le;
 	uint64_t b1, b2;
@@ -318,7 +318,7 @@ static int data_block_equal(void *context, void *value1_le, void *value2_le)
 	return b1 == b2;
 }
 
-static void subtree_inc(void *context, void *value)
+static void subtree_inc(void *context, const void *value)
 {
 	struct dm_btree_info *info = context;
 	__le64 root_le;
@@ -329,7 +329,7 @@ static void subtree_inc(void *context, void *value)
 	dm_tm_inc(info->tm, root);
 }
 
-static void subtree_dec(void *context, void *value)
+static void subtree_dec(void *context, const void *value)
 {
 	struct dm_btree_info *info = context;
 	__le64 root_le;
@@ -341,7 +341,7 @@ static void subtree_dec(void *context, void *value)
 		DMERR("btree delete failed\n");
 }
 
-static int subtree_equal(void *context, void *value1_le, void *value2_le)
+static int subtree_equal(void *context, const void *value1_le, const void *value2_le)
 {
 	__le64 v1_le, v2_le;
 	memcpy(&v1_le, value1_le, sizeof(v1_le));