f2fs: remove redundant set_page_dirty()

This patch remove redundant set_page_dirty in truncate_blocks
Signed-off-by: NYunlei He <heyunlei@huawei.com>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/file.c

@@ -567,8 +567,7 @@ int truncate_blocks(struct inode *inode, u64 from, bool lock)
 	}
 
 	if (f2fs_has_inline_data(inode)) {
-		if (truncate_inline_inode(ipage, from))
-			set_page_dirty(ipage);
+		truncate_inline_inode(ipage, from);
 		if (from == 0)
 			clear_inode_flag(inode, FI_DATA_EXIST);
 		f2fs_put_page(ipage, 1);