Ocfs2 uses kiocb.*private as a flag of unsigned long size. In commit a11f7e6 ocfs2: serialize unaligned aio, the unaligned io flag is involved in it to serialize the unaligned aio. As *private is not initialized in init_sync_kiocb() of do_sync_write(), this unaligned io flag may be unexpectly set in an aligned dio. And this will cause OCFS2_I(inode)->ip_unaligned_aio decreased to -1 in ocfs2_dio_end_io(), thus the following unaligned dio will hang forever at ocfs2_aiodio_wait() in ocfs2_file_aio_write().
Signed-off-by: Junxiao Bi <[email protected]> Cc: [email protected] Acked-by: Jeff Moyer <[email protected]> Acked-by: Joel Becker <[email protected]> --- include/linux/aio.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/aio.h b/include/linux/aio.h index 2314ad8..b1a520e 100644 --- a/include/linux/aio.h +++ b/include/linux/aio.h @@ -140,6 +140,7 @@ struct kiocb { (x)->ki_dtor = NULL; \ (x)->ki_obj.tsk = tsk; \ (x)->ki_user_data = 0; \ + (x)->private = NULL; \ } while (0) #define AIO_RING_MAGIC 0xa10a10a1 -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
