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-rw-r--r--include/linux/range.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/range.h b/include/linux/range.h
index 6ad0b73cb7ad..876cd5355158 100644
--- a/include/linux/range.h
+++ b/include/linux/range.h
@@ -13,11 +13,19 @@ static inline u64 range_len(const struct range *range)
return range->end - range->start + 1;
}
+/* True if r1 completely contains r2 */
static inline bool range_contains(struct range *r1, struct range *r2)
{
return r1->start <= r2->start && r1->end >= r2->end;
}
+/* True if any part of r1 overlaps r2 */
+static inline bool range_overlaps(const struct range *r1,
+ const struct range *r2)
+{
+ return r1->start <= r2->end && r1->end >= r2->start;
+}
+
int add_range(struct range *range, int az, int nr_range,
u64 start, u64 end);