diff options
author | Christoph Hellwig <hch@lst.de> | 2016-02-08 14:40:51 +1100 |
---|---|---|
committer | Dave Chinner <david@fromorbit.com> | 2016-02-08 14:40:51 +1100 |
commit | 187372a3b9faff68ed61c291d0135e6739e0dbdf (patch) | |
tree | 7eeed8ee2944dbdcc60ec49cf08f1b1604400b3e /fs | |
parent | 36f90b0a2ddd60823fe193a85e60ff1906c2a9b3 (diff) | |
download | linux-stable-187372a3b9faff68ed61c291d0135e6739e0dbdf.tar.gz linux-stable-187372a3b9faff68ed61c291d0135e6739e0dbdf.tar.bz2 linux-stable-187372a3b9faff68ed61c291d0135e6739e0dbdf.zip |
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 <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/dax.c | 9 | ||||
-rw-r--r-- | fs/direct-io.c | 9 | ||||
-rw-r--r-- | fs/ext4/inode.c | 9 | ||||
-rw-r--r-- | fs/ocfs2/aops.c | 7 | ||||
-rw-r--r-- | fs/xfs/xfs_aops.c | 13 |
5 files changed, 34 insertions, 13 deletions
@@ -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); diff --git a/fs/direct-io.c b/fs/direct-io.c index 1b2f7ffc8b84..9c6f885cc518 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -253,8 +253,13 @@ static ssize_t dio_complete(struct dio *dio, loff_t offset, ssize_t ret, if (ret == 0) ret = transferred; - if (dio->end_io && dio->result) - dio->end_io(dio->iocb, offset, transferred, dio->private); + if (dio->end_io) { + int err; + + err = dio->end_io(dio->iocb, offset, ret, dio->private); + if (err) + ret = err; + } if (!(dio->flags & DIO_SKIP_DIO_COUNT)) inode_dio_end(dio->inode); diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 83bc8bfb3bea..9db04dd9b88a 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3161,14 +3161,17 @@ out: } #endif -static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset, +static int ext4_end_io_dio(struct kiocb *iocb, loff_t offset, ssize_t size, void *private) { ext4_io_end_t *io_end = iocb->private; + if (size <= 0) + return 0; + /* if not async direct IO just return */ if (!io_end) - return; + return 0; ext_debug("ext4_end_io_dio(): io_end 0x%p " "for inode %lu, iocb 0x%p, offset %llu, size %zd\n", @@ -3179,6 +3182,8 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset, io_end->offset = offset; io_end->size = size; ext4_put_io_end(io_end); + + return 0; } /* diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index 794fd1587f34..5dcc5f5a842e 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -620,7 +620,7 @@ bail: * particularly interested in the aio/dio case. We use the rw_lock DLM lock * to protect io on one node from truncation on another. */ -static void ocfs2_dio_end_io(struct kiocb *iocb, +static int ocfs2_dio_end_io(struct kiocb *iocb, loff_t offset, ssize_t bytes, void *private) @@ -628,6 +628,9 @@ static void ocfs2_dio_end_io(struct kiocb *iocb, struct inode *inode = file_inode(iocb->ki_filp); int level; + if (bytes <= 0) + return 0; + /* this io's submitter should not have unlocked this before we could */ BUG_ON(!ocfs2_iocb_is_rw_locked(iocb)); @@ -644,6 +647,8 @@ static void ocfs2_dio_end_io(struct kiocb *iocb, level = ocfs2_iocb_rw_locked_level(iocb); ocfs2_rw_unlock(inode, level); } + + return 0; } static int ocfs2_releasepage(struct page *page, gfp_t wait) diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 379c089fb051..295aaffea78e 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -1645,7 +1645,7 @@ out_end_io: * case the completion can be called in interrupt context, whereas if we have an * ioend we will always be called in task context (i.e. from a workqueue). */ -STATIC void +STATIC int xfs_end_io_direct_write( struct kiocb *iocb, loff_t offset, @@ -1655,15 +1655,19 @@ xfs_end_io_direct_write( struct inode *inode = file_inode(iocb->ki_filp); struct xfs_ioend *ioend = private; + if (size <= 0) + return 0; + trace_xfs_gbmap_direct_endio(XFS_I(inode), offset, size, ioend ? ioend->io_type : 0, NULL); if (!ioend) { ASSERT(offset + size <= i_size_read(inode)); - return; + return 0; } __xfs_end_io_direct_write(inode, ioend, offset, size); + return 0; } static inline ssize_t @@ -1672,10 +1676,7 @@ xfs_vm_do_dio( struct kiocb *iocb, struct iov_iter *iter, loff_t offset, - void (*endio)(struct kiocb *iocb, - loff_t offset, - ssize_t size, - void *private), + dio_iodone_t endio, int flags) { struct block_device *bdev; |