5.4-stable review patch. If anyone has any objections, please let me know.
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From: Andrew Donnellan ajd@linux.ibm.com
commit efb78fa86e95832b78ca0ba60f3706788a818938 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- lib/test_meminit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/lib/test_meminit.c +++ b/lib/test_meminit.c @@ -86,7 +86,7 @@ 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();