I have patched "Contiguous Memory Allocator" of Linux kernel.
This fix of patch is for cma_init_reserved_mem function in
mm/cma.c source file as creating area without specific name.
Without fix may be a problem a lot of cma as next cma2147483647 naming.
Without fix may be a problem huge memory systems.
I think after "cma2147483647" naming is "cma-2147483648".
Thanks for interesting,
Ercan
--- START PATCH ---
From 5d3d01a3a0f7339617d1df945c0bd0ec1ab91ae3 Mon Sep 17 00:00:00 2001
From: Ercan Ersoy <ercanersoy@xxxxxxxxxxxxxx>
Date: Sun, 9 Jan 2022 10:01:14 +0300
Subject: [PATCH 2/2] Fix assgining cma_area_count
Fix assigning to cma->name in cma_init_reserved_mem function
in mm/cma.c source file.
Signed-off-by: Ercan Ersoy <ercanersoy@xxxxxxxxxxxxxx>
---
mm/cma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/cma.c b/mm/cma.c
index bc9ca8f3c487..03f01d1f1b57 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -199,7 +199,7 @@ int __init cma_init_reserved_mem(phys_addr_t base,
phys_addr_t size,
if (name)
snprintf(cma->name, CMA_MAX_NAME, name);
else
- snprintf(cma->name, CMA_MAX_NAME, "cma%d\n", cma_area_count);
+ snprintf(cma->name, CMA_MAX_NAME, "cma%u\n", cma_area_count);
cma->base_pfn = PFN_DOWN(base);
cma->count = size >> PAGE_SHIFT;
--
2.30.2
--- END PATCH ---
