f2fs: clear page's up-to-date if block was deallocated

If page's on-disk block was deallocated, let's remove up-to-date flag to avoid
further access with wrong contents.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index ae5c41444e8f..62e31b2aa131 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1259,8 +1259,10 @@ int do_write_data_page(struct page *page, struct f2fs_io_info *fio)
         fio->blk_addr = dn.data_blkaddr;
 
         /* This page is already truncated */
-        if (fio->blk_addr == NULL_ADDR)
+        if (fio->blk_addr == NULL_ADDR) {
+                ClearPageUptodate(page);
                 goto out_writepage;
+        }
 
         set_page_writeback(page);
 
@@ -1355,6 +1357,8 @@ done:
         clear_cold_data(page);
 out:
         inode_dec_dirty_pages(inode);
+        if (err)
+                ClearPageUptodate(page);
         unlock_page(page);
         if (need_balance_fs)
                 f2fs_balance_fs(sbi);