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sparc: fix handling of page table constructor failure

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[ Upstream commit 06517c9a336f4c20f2064611bf4b1e7881a95fe1 ]

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/[email protected]
Fixes: 1ae9ae5f7d ("sparc: handle pgtable_page_ctor() fail")
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Reviewed-by: Mike Rapoport <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Cc: David Miller <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Matthew Wilcox (Oracle) 2020-12-14 19:07:59 -08:00 • committed by Greg Kroah-Hartman
commit c3bf90c6aa
1 changed files with 1 additions and 1 deletions
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2
arch/sparc/mm/init_64.c
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@ -2904,7 +2904,7 @@ pgtable_t pte_alloc_one(struct mm_struct *mm)
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);