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authorChao Yu <chao2.yu@samsung.com>2014-06-12 09:31:50 +0400
committerJaegeuk Kim <jaegeuk@kernel.org>2014-07-10 01:04:24 +0400
commitca0a81b397b5f153ac2a9880c5e85b08b0447e4e (patch)
treeff170cf8dce25ce8655ecd8490af530cfb409df0 /fs/f2fs
parent5576cd6ca555bd79e76a2d798aec44b28851d369 (diff)
downloadlinux-ca0a81b397b5f153ac2a9880c5e85b08b0447e4e.tar.xz
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: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/file.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 7d8b96275092..36fa50587bb8 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);
}