From: Hugh Dickins <hughd@google.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Hugh Dickins <hughd@google.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Yang Shi <shy828301@gmail.com>,
Wang Yugui <wangyugui@e16-tech.com>,
Matthew Wilcox <willy@infradead.org>,
Alistair Popple <apopple@nvidia.com>,
Ralph Campbell <rcampbell@nvidia.com>, Zi Yan <ziy@nvidia.com>,
Peter Xu <peterx@redhat.com>, Will Deacon <will@kernel.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: [PATCH 01/11] mm: page_vma_mapped_walk(): use page for pvmw->page
Date: Wed, 9 Jun 2021 23:34:40 -0700 (PDT) [thread overview]
Message-ID: <88e67645-f467-c279-bf5e-af4b5c6b13eb@google.com> (raw)
In-Reply-To: <589b358c-febc-c88e-d4c2-7834b37fa7bf@google.com>
page_vma_mapped_walk() cleanup: sometimes the local copy of pvwm->page was
used, sometimes pvmw->page itself: use the local copy "page" throughout.
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>
---
mm/page_vma_mapped.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c
index e37bd43904af..a6dbf714ca15 100644
--- a/mm/page_vma_mapped.c
+++ b/mm/page_vma_mapped.c
@@ -156,7 +156,7 @@ 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(page));
if (!pvmw->pte)
@@ -217,8 +217,7 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw)
* 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);
@@ -234,9 +233,9 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw)
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)
--
2.26.2
next prev parent reply other threads:[~2021-06-10 6:34 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-10 6:31 [PATCH 00/11] mm: page_vma_mapped_walk() cleanup and THP fixes Hugh Dickins
2021-06-10 6:34 ` Hugh Dickins [this message]
2021-06-10 8:12 ` [PATCH 01/11] mm: page_vma_mapped_walk(): use page for pvmw->page Alistair Popple
2021-06-10 8:55 ` Kirill A. Shutemov
2021-06-10 14:14 ` Peter Xu
2021-06-10 22:35 ` Hugh Dickins
2021-06-10 6:36 ` [PATCH 02/11] mm: page_vma_mapped_walk(): settle PageHuge on entry Hugh Dickins
2021-06-10 8:57 ` Kirill A. Shutemov
2021-06-10 14:17 ` Peter Xu
2021-06-10 22:45 ` Hugh Dickins
2021-06-10 6:38 ` [PATCH 03/11] mm: page_vma_mapped_walk(): use pmd_read_atomic() Hugh Dickins
2021-06-10 9:06 ` Kirill A. Shutemov
2021-06-10 12:15 ` Jason Gunthorpe
2021-06-11 6:37 ` Hugh Dickins
2021-06-11 15:36 ` Jason Gunthorpe
2021-06-11 19:05 ` Hugh Dickins
2021-06-11 19:42 ` Jason Gunthorpe
2021-06-15 9:46 ` Will Deacon
2021-06-16 0:42 ` Jason Gunthorpe
2021-06-16 10:27 ` Will Deacon
2021-06-11 19:33 ` Hugh Dickins
2021-06-10 6:40 ` [PATCH 04/11] mm: page_vma_mapped_walk(): use pmde for *pvmw->pmd Hugh Dickins
2021-06-10 9:10 ` Kirill A. Shutemov
2021-06-10 14:31 ` Peter Xu
2021-06-10 6:42 ` [PATCH 05/11] mm: page_vma_mapped_walk(): prettify PVMW_MIGRATION block Hugh Dickins
2021-06-10 9:16 ` Kirill A. Shutemov
2021-06-10 14:48 ` Peter Xu
2021-06-10 6:44 ` [PATCH 06/11] mm: page_vma_mapped_walk(): crossing page table boundary Hugh Dickins
2021-06-10 9:32 ` Kirill A. Shutemov
2021-06-10 23:02 ` Hugh Dickins
2021-06-11 11:23 ` Kirill A. Shutemov
2021-06-10 6:46 ` [PATCH 07/11] mm: page_vma_mapped_walk(): add a level of indentation Hugh Dickins
2021-06-10 9:34 ` Kirill A. Shutemov
2021-06-10 6:48 ` [PATCH 08/11] mm: page_vma_mapped_walk(): use goto instead of while (1) Hugh Dickins
2021-06-10 9:39 ` Kirill A. Shutemov
2021-06-10 6:50 ` [PATCH 09/11] mm: page_vma_mapped_walk(): get vma_address_end() earlier Hugh Dickins
2021-06-10 9:40 ` Kirill A. Shutemov
2021-06-10 6:52 ` [PATCH 10/11] mm/thp: fix page_vma_mapped_walk() if THP mapped by ptes Hugh Dickins
2021-06-10 9:42 ` Kirill A. Shutemov
2021-06-10 6:54 ` [PATCH 11/11] mm/thp: another PVMW_SYNC fix in page_vma_mapped_walk() Hugh Dickins
2021-06-10 9:43 ` Kirill A. Shutemov
2021-06-11 18:29 ` Hugh Dickins
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