From ba503835ad92d8b259b7ebbbf812a9fc57567336 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Mon, 23 Nov 2015 16:38:25 -0500 Subject: dm btree: factor out need_insert() helper Eliminates code duplication within insert(). Signed-off-by: Mike Snitzer --- drivers/md/persistent-data/dm-btree.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) (limited to 'drivers') 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; -- cgit v1.2.3