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dm btree: factor out need_insert() helper 

Eliminates code duplication within insert().

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mike Snitzer 2015-11-23 16:38:25 -05:00
parent 86a49e2dac
commit ba503835ad
1 changed files with 10 additions and 7 deletions
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17
drivers/md/persistent-data/dm-btree.c
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@ -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;