From 187372a3b9faff68ed61c291d0135e6739e0dbdf Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 8 Feb 2016 14:40:51 +1100 Subject: direct-io: always call ->end_io if non-NULL This way we can pass back errors to the file system, and allow for cleanup required for all direct I/O invocations. Also allow the ->end_io handlers to return errors on their own, so that I/O completion errors can be passed on to the callers. Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/dax.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'fs/dax.c') diff --git a/fs/dax.c b/fs/dax.c index 4fd6b0c5c6b5..e38b2c589b54 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -267,8 +267,13 @@ ssize_t dax_do_io(struct kiocb *iocb, struct inode *inode, if ((flags & DIO_LOCKING) && iov_iter_rw(iter) == READ) inode_unlock(inode); - if ((retval > 0) && end_io) - end_io(iocb, pos, retval, bh.b_private); + if (end_io) { + int err; + + err = end_io(iocb, pos, retval, bh.b_private); + if (err) + retval = err; + } if (!(flags & DIO_SKIP_DIO_COUNT)) inode_dio_end(inode); -- cgit v1.2.3