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: Chao Yu <[email protected]> --- fs/f2fs/file.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 9c49c59..fc569ca 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -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); } -- 1.7.9.5 ------------------------------------------------------------------------------ HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions Find What Matters Most in Your Big Data with HPCC Systems Open Source. Fast. Scalable. Simple. Ideal for Dirty Data. Leverages Graph Analysis for Fast Processing & Easy Data Exploration http://p.sf.net/sfu/hpccsystems _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
