+ sparc-fix-handling-of-page-table-constructor-failure.patch added to -mm tree

+ sparc-fix-handling-of-page-table-constructor-failure.patch added to -mm tree

[akpm]

The patch titled
     Subject: sparc: fix handling of page table constructor failure
has been added to the -mm tree.  Its filename is
     sparc-fix-handling-of-page-table-constructor-failure.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/sparc-fix-handling-of-page-table-constructor-failure.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/sparc-fix-handling-of-page-table-constructor-failure.patch

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** 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: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: sparc: fix handling of page table constructor failure

The page has just been allocated, so its refcount is 1.  free_unref_page()
is for use on pages which have a zero refcount.  Use __free_page() like
the other implementations of pte_alloc_one().

Link: https://lkml.kernel.org/r/20201125034655.27687-1-willy@infradead.org
Fixes: 1ae9ae5f7df7 ("sparc: handle pgtable_page_ctor() fail")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/sparc/mm/init_64.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/sparc/mm/init_64.c~sparc-fix-handling-of-page-table-constructor-failure
+++ a/arch/sparc/mm/init_64.c
@@ -2894,7 +2894,7 @@ pgtable_t pte_alloc_one(struct mm_struct
 	if (!page)
 		return NULL;
 	if (!pgtable_pte_page_ctor(page)) {
-		free_unref_page(page);
+		__free_page(page);
 		return NULL;
 	}
 	return (pte_t *) page_address(page);
_

Patches currently in -mm which might be from willy@infradead.org are

sparc-fix-handling-of-page-table-constructor-failure.patch
mm-move-free_unref_page-to-mm-internalh.patch
mm-page-flags-fix-comment.patch
mm-page_alloc-add-__free_pages-documentation.patch
mm-support-thps-in-zero_user_segments.patch
mm-make-pagecache-tagged-lookups-return-only-head-pages.patch
mm-shmem-use-pagevec_lookup-in-shmem_unlock_mapping.patch
mm-swap-optimise-get_shadow_from_swap_cache.patch
mm-add-fgp_entry.patch
mm-filemap-rename-find_get_entry-to-mapping_get_entry.patch
mm-filemap-add-helper-for-finding-pages.patch
mm-filemap-add-helper-for-finding-pages-fix.patch
mm-filemap-add-mapping_seek_hole_data.patch
mm-filemap-add-mapping_seek_hole_data-fix.patch
iomap-use-mapping_seek_hole_data.patch
mm-add-and-use-find_lock_entries.patch
mm-add-and-use-find_lock_entries-fix.patch
mm-add-an-end-parameter-to-find_get_entries.patch
mm-add-an-end-parameter-to-pagevec_lookup_entries.patch
mm-remove-nr_entries-parameter-from-pagevec_lookup_entries.patch
mm-pass-pvec-directly-to-find_get_entries.patch
mm-remove-pagevec_lookup_entries.patch
mm-truncateshmem-handle-truncates-that-split-thps.patch
mm-filemap-return-only-head-pages-from-find_get_entries.patch