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authorDavid S. Miller <davem@davemloft.net>2016-01-13 00:21:27 -0500
committerDavid S. Miller <davem@davemloft.net>2016-01-13 00:21:27 -0500
commitddb5388ffd0ad75d07e7b78181a0b579824ba6f0 (patch)
treebe1e2bd103c69d7bbace3fffd97bc3d714bbc3d7 /drivers/md/persistent-data/dm-btree.c
parentccdf6ce6a8dba374668ae9b4d763e19903611c38 (diff)
parent67990608c8b95d2b8ccc29932376ae73d5818727 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Diffstat (limited to 'drivers/md/persistent-data/dm-btree.c')
-rw-r--r--drivers/md/persistent-data/dm-btree.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c
index b1ced58eb5e1..ea3d3b656fd0 100644
--- a/drivers/md/persistent-data/dm-btree.c
+++ b/drivers/md/persistent-data/dm-btree.c
@@ -754,12 +754,19 @@ static int btree_insert_raw(struct shadow_spine *s, dm_block_t root,
return 0;
}
+static bool need_insert(struct btree_node *node, uint64_t *keys,
+ unsigned level, unsigned index)
+{
+ return ((index >= le32_to_cpu(node->header.nr_entries)) ||
+ (le64_to_cpu(node->keys[index]) != keys[level]));
+}
+
static int insert(struct dm_btree_info *info, dm_block_t root,
uint64_t *keys, void *value, dm_block_t *new_root,
int *inserted)
__dm_written_to_disk(value)
{
- int r, need_insert;
+ int r;
unsigned level, index = -1, last_level = info->levels - 1;
dm_block_t block = root;
struct shadow_spine spine;
@@ -775,10 +782,8 @@ static int insert(struct dm_btree_info *info, dm_block_t root,
goto bad;
n = dm_block_data(shadow_current(&spine));
- need_insert = ((index >= le32_to_cpu(n->header.nr_entries)) ||
- (le64_to_cpu(n->keys[index]) != keys[level]));
- if (need_insert) {
+ if (need_insert(n, keys, level, index)) {
dm_block_t new_tree;
__le64 new_le;
@@ -805,10 +810,8 @@ static int insert(struct dm_btree_info *info, dm_block_t root,
goto bad;
n = dm_block_data(shadow_current(&spine));
- need_insert = ((index >= le32_to_cpu(n->header.nr_entries)) ||
- (le64_to_cpu(n->keys[index]) != keys[level]));
- if (need_insert) {
+ if (need_insert(n, keys, level, index)) {
if (inserted)
*inserted = 1;