diff mbox series

[v2,04/28] mm, hugetlb: use cma_declare_contiguous_multi

Message ID 20250129224157.2046079-5-fvdl@google.com (mailing list archive)
State New
Headers show
Series hugetlb/CMA improvements for large systems | expand

Commit Message

Frank van der Linden Jan. 29, 2025, 10:41 p.m. UTC 
hugetlb_cma is fine with using multiple CMA ranges, as long as it
can get its gigantic pages allocated from them. So, use
cma_declare_contiguous_multi to allow for multiple ranges,
increasing the chances of getting what we want on systems
with gaps in physical memory.

Signed-off-by: Frank van der Linden <fvdl@google.com>
---
 mm/hugetlb.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 3b25b69aa94f..bc8af09a3105 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -7738,9 +7738,8 @@  void __init hugetlb_cma_reserve(int order)
 		 * may be returned to CMA allocator in the case of
 		 * huge page demotion.
 		 */
-		res = cma_declare_contiguous_nid(0, size, 0,
-					PAGE_SIZE << order,
-					HUGETLB_PAGE_ORDER, false, name,
+		res = cma_declare_contiguous_multi(size, PAGE_SIZE << order,
+					HUGETLB_PAGE_ORDER, name,
 					&hugetlb_cma[nid], nid);
 		if (res) {
 			pr_warn("hugetlb_cma: reservation failed: err %d, node %d",