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* [merged mm-stable] lib-test_meminit-allocate-pages-up-to-order-max_order.patch removed from -mm tree
@ 2023-08-11 23:01 Andrew Morton
  0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2023-08-11 23:01 UTC (permalink / raw)
  To: mm-commits, xkernel.wang, stable, glider, ajd, akpm


The quilt patch titled
     Subject: lib/test_meminit: allocate pages up to order MAX_ORDER
has been removed from the -mm tree.  Its filename was
     lib-test_meminit-allocate-pages-up-to-order-max_order.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Andrew Donnellan <ajd@linux.ibm.com>
Subject: lib/test_meminit: allocate pages up to order MAX_ORDER
Date: Fri, 14 Jul 2023 11:52:38 +1000

test_pages() tests the page allocator by calling alloc_pages() with
different orders up to order 10.

However, different architectures and platforms support different maximum
contiguous allocation sizes.  The default maximum allocation order
(MAX_ORDER) is 10, but architectures can use CONFIG_ARCH_FORCE_MAX_ORDER
to override this.  On platforms where this is less than 10, test_meminit()
will blow up with a WARN().  This is expected, so let's not do that.

Replace the hardcoded "10" with the MAX_ORDER macro so that we test
allocations up to the expected platform limit.

Link: https://lkml.kernel.org/r/20230714015238.47931-1-ajd@linux.ibm.com
Fixes: 5015a300a522 ("lib: introduce test_meminit module")
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Xiaoke Wang <xkernel.wang@foxmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/test_meminit.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/lib/test_meminit.c~lib-test_meminit-allocate-pages-up-to-order-max_order
+++ a/lib/test_meminit.c
@@ -93,7 +93,7 @@ static int __init test_pages(int *total_
 	int failures = 0, num_tests = 0;
 	int i;
 
-	for (i = 0; i < 10; i++)
+	for (i = 0; i <= MAX_ORDER; i++)
 		num_tests += do_alloc_pages_order(i, &failures);
 
 	REPORT_FAILURES_IN_FN();
_

Patches currently in -mm which might be from ajd@linux.ibm.com are



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2023-08-11 23:01 [merged mm-stable] lib-test_meminit-allocate-pages-up-to-order-max_order.patch removed from -mm tree Andrew Morton

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