dm persistent data: set some btree fn parms const

[mirror_ubuntu-zesty-kernel.git] / drivers / md / dm-thin-metadata.c

diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 693e149e97271dbe3fa3b646cfac018533892835..00cee02f8fc9b299788941c9b4147abdfc56c83c 100644 (file)
--- 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));
@@ -408,7 +408,7 @@ static void __setup_btree_details(struct dm_pool_metadata *pmd)
 
        pmd->tl_info.tm = pmd->tm;
        pmd->tl_info.levels = 1;
-       pmd->tl_info.value_type.context = &pmd->info;
+       pmd->tl_info.value_type.context = &pmd->bl_info;
        pmd->tl_info.value_type.size = sizeof(__le64);
        pmd->tl_info.value_type.inc = subtree_inc;
        pmd->tl_info.value_type.dec = subtree_dec;