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| author | Lai Jiangshan <laijs@cn.fujitsu.com> | 2014-09-18 16:49:42 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-09-18 17:00:17 +0200 |
| commit | e9f05b4cfed38d0e57b0a705a7f480cfbe0c3247 (patch) | |
| tree | 9b0a98ac1bb1cc83947c5b9843ab72f89a8644ac /drivers/block | |
| parent | drbd: compute the end before rb_insert_augmented() (diff) | |
| download | linux-e9f05b4cfed38d0e57b0a705a7f480cfbe0c3247.tar.xz linux-e9f05b4cfed38d0e57b0a705a7f480cfbe0c3247.zip | |
drbd: use RB_DECLARE_CALLBACKS() to define augment callbacks
The original code are the same as RB_DECLARE_CALLBACKS().
CC: Michel Lespinasse <walken@google.com>
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Andreas Gruenbacher <agruen@linbit.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/drbd/drbd_interval.c | 36 |
1 files changed, 2 insertions, 34 deletions
diff --git a/drivers/block/drbd/drbd_interval.c b/drivers/block/drbd/drbd_interval.c index 04a14e0f8878..51b25ad85251 100644 --- a/drivers/block/drbd/drbd_interval.c +++ b/drivers/block/drbd/drbd_interval.c @@ -37,40 +37,8 @@ compute_subtree_last(struct drbd_interval *node) return max; } -static void augment_propagate(struct rb_node *rb, struct rb_node *stop) -{ - while (rb != stop) { - struct drbd_interval *node = rb_entry(rb, struct drbd_interval, rb); - sector_t subtree_last = compute_subtree_last(node); - if (node->end == subtree_last) - break; - node->end = subtree_last; - rb = rb_parent(&node->rb); - } -} - -static void augment_copy(struct rb_node *rb_old, struct rb_node *rb_new) -{ - struct drbd_interval *old = rb_entry(rb_old, struct drbd_interval, rb); - struct drbd_interval *new = rb_entry(rb_new, struct drbd_interval, rb); - - new->end = old->end; -} - -static void augment_rotate(struct rb_node *rb_old, struct rb_node *rb_new) -{ - struct drbd_interval *old = rb_entry(rb_old, struct drbd_interval, rb); - struct drbd_interval *new = rb_entry(rb_new, struct drbd_interval, rb); - - new->end = old->end; - old->end = compute_subtree_last(old); -} - -static const struct rb_augment_callbacks augment_callbacks = { - augment_propagate, - augment_copy, - augment_rotate, -}; +RB_DECLARE_CALLBACKS(static, augment_callbacks, struct drbd_interval, rb, + sector_t, end, compute_subtree_last); /** * drbd_insert_interval - insert a new interval into a tree |