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| author | Hugh Dickins <hughd@google.com> | 2021-06-24 18:39:01 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-11 12:49:28 +0200 |
| commit | be9ab2d00d071f930cc0389a8ce1424fd84d4c6b (patch) | |
| tree | e2e8803664c86dcb30fc846cdfaa06c2cf4ebc95 /mm/page_vma_mapped.c | |
| parent | e17afb6d0b7c74f316dbff33588210190600efc7 (diff) | |
| download | linux-stable-be9ab2d00d071f930cc0389a8ce1424fd84d4c6b.tar.gz linux-stable-be9ab2d00d071f930cc0389a8ce1424fd84d4c6b.tar.bz2 linux-stable-be9ab2d00d071f930cc0389a8ce1424fd84d4c6b.zip | |
mm: page_vma_mapped_walk(): use page for pvmw->page
[ Upstream commit f003c03bd29e6f46fef1b9a8e8d636ac732286d5 ]
Patch series "mm: page_vma_mapped_walk() cleanup and THP fixes".
I've marked all of these for stable: many are merely cleanups, but I
think they are much better before the main fix than after.
This patch (of 11):
page_vma_mapped_walk() cleanup: sometimes the local copy of pvwm->page
was used, sometimes pvmw->page itself: use the local copy "page"
throughout.
Link: https://lkml.kernel.org/r/589b358c-febc-c88e-d4c2-7834b37fa7bf@google.com
Link: https://lkml.kernel.org/r/88e67645-f467-c279-bf5e-af4b5c6b13eb@google.com
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Wang Yugui <wangyugui@e16-tech.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Will Deacon <will@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'mm/page_vma_mapped.c')
| -rw-r--r-- | mm/page_vma_mapped.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c index bb7488e86bea..d146f6d31a62 100644 --- a/mm/page_vma_mapped.c +++ b/mm/page_vma_mapped.c @@ -151,7 +151,7 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw) if (pvmw->pte) goto next_pte; - if (unlikely(PageHuge(pvmw->page))) { + if (unlikely(PageHuge(page))) { /* when pud is not present, pte will be NULL */ pvmw->pte = huge_pte_offset(mm, pvmw->address, PAGE_SIZE << compound_order(page)); @@ -213,8 +213,7 @@ restart: * cannot return prematurely, while zap_huge_pmd() has * cleared *pmd but not decremented compound_mapcount(). */ - if ((pvmw->flags & PVMW_SYNC) && - PageTransCompound(pvmw->page)) { + if ((pvmw->flags & PVMW_SYNC) && PageTransCompound(page)) { spinlock_t *ptl = pmd_lock(mm, pvmw->pmd); spin_unlock(ptl); @@ -230,9 +229,9 @@ restart: return true; next_pte: /* Seek to next pte only makes sense for THP */ - if (!PageTransHuge(pvmw->page) || PageHuge(pvmw->page)) + if (!PageTransHuge(page) || PageHuge(page)) return not_found(pvmw); - end = vma_address_end(pvmw->page, pvmw->vma); + end = vma_address_end(page, pvmw->vma); do { pvmw->address += PAGE_SIZE; if (pvmw->address >= end) |