提交 ca0a81b3 编写于 作者: C Chao Yu 提交者: Jaegeuk Kim

f2fs: avoid to truncate non-updated page partially

After we call find_data_page in truncate_partial_data_page, we could not
guarantee this page is updated or not as error may occurred in lower layer.

We'd better check status of the page to avoid this no updated page be
writebacked to device.
Signed-off-by: NChao Yu <chao2.yu@samsung.com>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
上级 5576cd6c
......@@ -380,13 +380,15 @@ static void truncate_partial_data_page(struct inode *inode, u64 from)
return;
lock_page(page);
if (unlikely(page->mapping != inode->i_mapping)) {
f2fs_put_page(page, 1);
return;
}
if (unlikely(!PageUptodate(page) ||
page->mapping != inode->i_mapping))
goto out;
f2fs_wait_on_page_writeback(page, DATA);
zero_user(page, offset, PAGE_CACHE_SIZE - offset);
set_page_dirty(page);
out:
f2fs_put_page(page, 1);
}
......
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