The patch titled
Subject: mm-gup-do-not-migrate-zero-page-fix
has been added to the -mm tree. Its filename is
mm-gup-do-not-migrate-zero-page-fix.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-gup-do-not-migrate-zero-page-fix.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-gup-do-not-migrate-zero-page-fix.patch
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------------------------------------------------------
From: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
Subject: mm-gup-do-not-migrate-zero-page-fix
add is_pinnable_page() stub
Link: https://lkml.kernel.org/r/CA+CK2bBjC8=cRsL5VhWkcevPsqSXWhsANVjsFNMERLT8vWtiQw@xxxxxxxxxxxxxx
Signed-off-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 7 +++++++
1 file changed, 7 insertions(+)
--- a/include/linux/mm.h~mm-gup-do-not-migrate-zero-page-fix
+++ a/include/linux/mm.h
@@ -1121,12 +1121,19 @@ static inline bool is_zone_movable_page(
return page_zonenum(page) == ZONE_MOVABLE;
}
+#ifdef CONFIG_MIGRATION
/* MIGRATE_CMA and ZONE_MOVABLE do not allow pin pages */
static inline bool is_pinnable_page(struct page *page)
{
return !(is_zone_movable_page(page) || is_migrate_cma_page(page)) ||
is_zero_pfn(page_to_pfn(page));
}
+#else
+static inline bool is_pinnable_page(struct page *page)
+{
+ return true;
+}
+#endif
#ifdef CONFIG_DEV_PAGEMAP_OPS
void free_devmap_managed_page(struct page *page);
_
Patches currently in -mm which might be from pasha.tatashin@xxxxxxxxxx are
mm-gup-dont-pin-migrated-cma-pages-in-movable-zone.patch
mm-gup-check-every-subpage-of-a-compound-page-during-isolation.patch
mm-gup-return-an-error-on-migration-failure.patch
mm-gup-check-for-isolation-errors.patch
mm-cma-rename-pf_memalloc_nocma-to-pf_memalloc_pin.patch
mm-apply-per-task-gfp-constraints-in-fast-path.patch
mm-honor-pf_memalloc_pin-for-all-movable-pages.patch
mm-gup-do-not-migrate-zero-page.patch
mm-gup-do-not-migrate-zero-page-fix.patch
mm-gup-migrate-pinned-pages-out-of-movable-zone.patch
memory-hotplugrst-add-a-note-about-zone_movable-and-page-pinning.patch
mm-gup-change-index-type-to-long-as-it-counts-pages.patch
mm-gup-longterm-pin-migration-cleanup.patch
selftests-vm-gup_test-fix-test-flag.patch
selftests-vm-gup_test-test-faulting-in-kernel-and-verify-pinnable-pages.patch
