diff options
Diffstat (limited to 'drivers/block/drbd/drbd_interval.c')
| -rw-r--r-- | drivers/block/drbd/drbd_interval.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_interval.c b/drivers/block/drbd/drbd_interval.c index 5024ffd6143d..873beda6de24 100644 --- a/drivers/block/drbd/drbd_interval.c +++ b/drivers/block/drbd/drbd_interval.c @@ -58,7 +58,7 @@ drbd_insert_interval(struct rb_root *root, struct drbd_interval *this) * drbd_contains_interval - check if a tree contains a given interval * @root: red black tree root * @sector: start sector of @interval - * @interval: may not be a valid pointer + * @interval: may be an invalid pointer * * Returns if the tree contains the node @interval with start sector @start. * Does not dereference @interval until @interval is known to be a valid object @@ -95,6 +95,10 @@ drbd_contains_interval(struct rb_root *root, sector_t sector, void drbd_remove_interval(struct rb_root *root, struct drbd_interval *this) { + /* avoid endless loop */ + if (drbd_interval_empty(this)) + return; + rb_erase_augmented(&this->rb, root, &augment_callbacks); } |