diff options
Diffstat (limited to 'drivers/block/drbd/drbd_interval.c')
| -rw-r--r-- | drivers/block/drbd/drbd_interval.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/block/drbd/drbd_interval.c b/drivers/block/drbd/drbd_interval.c index 0d17eaa89a69..14dbe2dd2d33 100644 --- a/drivers/block/drbd/drbd_interval.c +++ b/drivers/block/drbd/drbd_interval.c @@ -122,9 +122,11 @@ drbd_remove_interval(struct rb_root *root, struct drbd_interval *this) * @sector: start sector * @size: size, aligned to 512 bytes * - * Returns the interval overlapping with [sector, sector + size), or NULL. - * When there is more than one overlapping interval in the tree, the interval - * with the lowest start sector is returned. + * Returns an interval overlapping with [sector, sector + size), or NULL if + * there is none. When there is more than one overlapping interval in the + * tree, the interval with the lowest start sector is returned, and all other + * overlapping intervals will be on the right side of the tree, reachable with + * rb_next(). */ struct drbd_interval * drbd_find_overlap(struct rb_root *root, sector_t sector, unsigned int size) |