The patch titled
Subject: mm/hugetlb: better checks before using hugetlb_cma
has been added to the -mm tree. Its filename is
mm-hugetlb-avoid-hardcoding-while-checking-if-cma-is-enabled-fix-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-avoid-hardcoding-while-checking-if-cma-is-enabled-fix-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-avoid-hardcoding-while-checking-if-cma-is-enabled-fix-fix.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Subject: mm/hugetlb: better checks before using hugetlb_cma
Link: http://lkml.kernel.org/r/20200721205716.6dbaa56b@xxxxxxxxxxxxxxxx
Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Acked-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hugetlb.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/mm/hugetlb.c~mm-hugetlb-avoid-hardcoding-while-checking-if-cma-is-enabled-fix-fix
+++ a/mm/hugetlb.c
@@ -1238,9 +1238,10 @@ static void free_gigantic_page(struct pa
* If the page isn't allocated using the cma allocator,
* cma_release() returns false.
*/
- if (IS_ENABLED(CONFIG_CMA) &&
- cma_release(hugetlb_cma[page_to_nid(page)], page, 1 << order))
+#ifdef CONFIG_CMA
+ if (cma_release(hugetlb_cma[page_to_nid(page)], page, 1 << order))
return;
+#endif
free_contig_range(page_to_pfn(page), 1 << order);
}
@@ -1251,7 +1252,8 @@ static struct page *alloc_gigantic_page(
{
unsigned long nr_pages = 1UL << huge_page_order(h);
- if (IS_ENABLED(CONFIG_CMA)) {
+#ifdef CONFIG_CMA
+ {
struct page *page;
int node;
@@ -1265,6 +1267,7 @@ static struct page *alloc_gigantic_page(
return page;
}
}
+#endif
return alloc_contig_pages(nr_pages, gfp_mask, nid, nodemask);
}
_
Patches currently in -mm which might be from sfr@xxxxxxxxxxxxxxxx are
mm-hugetlb-avoid-hardcoding-while-checking-if-cma-is-enabled-fix-fix.patch
