| From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.14 25/89] f2fs: fix to active page in lru list for read path | Date | Sun, 2 Sep 2018 13:06:38 +0000 |
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From: Chao Yu <yuchao0@huawei.com>
[ Upstream commit 82cf4f132e6d16dca6fc3bd955019246141bc645 ]
If config CONFIG_F2FS_FAULT_INJECTION is on, for both read or write path we will call find_lock_page() to get the page, but for read path, it missed to passing FGP_ACCESSED to allocator to active the page in LRU list, result in being reclaimed in advance incorrectly, fix it.
Reported-by: Xianrong Zhou <zhouxianrong@huawei.com> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> --- fs/f2fs/f2fs.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 3b34004a71c1..54f8520ad7a2 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1766,8 +1766,13 @@ static inline struct page *f2fs_grab_cache_page(struct address_space *mapping, pgoff_t index, bool for_write) { #ifdef CONFIG_F2FS_FAULT_INJECTION - struct page *page = find_lock_page(mapping, index); + struct page *page; + if (!for_write) + page = find_get_page_flags(mapping, index, + FGP_LOCK | FGP_ACCESSED); + else + page = find_lock_page(mapping, index); if (page) return page; -- 2.17.1
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