[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20230830182753.55367-3-zi.yan@sent.com>
Date: Wed, 30 Aug 2023 14:27:52 -0400
From: Zi Yan <zi.yan@...t.com>
To: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
linux-mips@...r.kernel.org
Cc: Zi Yan <ziy@...dia.com>, Andrew Morton <akpm@...ux-foundation.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
"Matthew Wilcox (Oracle)" <willy@...radead.org>,
David Hildenbrand <david@...hat.com>,
Mike Kravetz <mike.kravetz@...cle.com>,
Muchun Song <muchun.song@...ux.dev>,
"Mike Rapoport (IBM)" <rppt@...nel.org>
Subject: [PATCH 2/3] fs: use nth_page() in place of direct struct page manipulation.
From: Zi Yan <ziy@...dia.com>
When dealing with hugetlb pages, struct page is not guaranteed to be
contiguous on SPARSEMEM without VMEMMAP. Use nth_page() to handle it
properly.
Signed-off-by: Zi Yan <ziy@...dia.com>
---
fs/hugetlbfs/inode.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 316c4cebd3f3..60fce26ff937 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -295,7 +295,7 @@ static size_t adjust_range_hwpoison(struct page *page, size_t offset, size_t byt
size_t res = 0;
/* First subpage to start the loop. */
- page += offset / PAGE_SIZE;
+ page = nth_page(page, offset / PAGE_SIZE);
offset %= PAGE_SIZE;
while (1) {
if (is_raw_hwpoison_page_in_hugepage(page))
@@ -309,7 +309,7 @@ static size_t adjust_range_hwpoison(struct page *page, size_t offset, size_t byt
break;
offset += n;
if (offset == PAGE_SIZE) {
- page++;
+ page = nth_page(page, 1);
offset = 0;
}
}
--
2.40.1
Powered by blists - more mailing lists