Esempio n. 1
0
/*
 * IO write completion.
 */
STATIC void
xfs_end_io(
	struct work_struct *work)
{
	xfs_ioend_t	*ioend = container_of(work, xfs_ioend_t, io_work);
	struct xfs_inode *ip = XFS_I(ioend->io_inode);
	int		error = 0;

	if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
		ioend->io_error = -EIO;
		goto done;
	}
	if (ioend->io_error)
		goto done;

	/*
	 * For unwritten extents we need to issue transactions to convert a
	 * range to normal written extens after the data I/O has finished.
	 */
	if (ioend->io_type == XFS_IO_UNWRITTEN) {
		error = xfs_iomap_write_unwritten(ip, ioend->io_offset,
						  ioend->io_size);
	} else if (ioend->io_append_trans) {
		error = xfs_setfilesize_ioend(ioend);
	} else {
		ASSERT(!xfs_ioend_is_append(ioend));
	}

done:
	if (error)
		ioend->io_error = error;
	xfs_destroy_ioend(ioend);
}
Esempio n. 2
0
/*
 * IO write completion.
 */
STATIC void
xfs_end_io(
	struct work_struct *work)
{
	struct xfs_ioend	*ioend =
		container_of(work, struct xfs_ioend, io_work);
	struct xfs_inode	*ip = XFS_I(ioend->io_inode);
	int			error = ioend->io_bio->bi_error;

	/*
	 * Set an error if the mount has shut down and proceed with end I/O
	 * processing so it can perform whatever cleanups are necessary.
	 */
	if (XFS_FORCED_SHUTDOWN(ip->i_mount))
		error = -EIO;

	/*
	 * For a CoW extent, we need to move the mapping from the CoW fork
	 * to the data fork.  If instead an error happened, just dump the
	 * new blocks.
	 */
	if (ioend->io_type == XFS_IO_COW) {
		if (error)
			goto done;
		if (ioend->io_bio->bi_error) {
			error = xfs_reflink_cancel_cow_range(ip,
					ioend->io_offset, ioend->io_size);
			goto done;
		}
		error = xfs_reflink_end_cow(ip, ioend->io_offset,
				ioend->io_size);
		if (error)
			goto done;
	}

	/*
	 * For unwritten extents we need to issue transactions to convert a
	 * range to normal written extens after the data I/O has finished.
	 * Detecting and handling completion IO errors is done individually
	 * for each case as different cleanup operations need to be performed
	 * on error.
	 */
	if (ioend->io_type == XFS_IO_UNWRITTEN) {
		if (error)
			goto done;
		error = xfs_iomap_write_unwritten(ip, ioend->io_offset,
						  ioend->io_size);
	} else if (ioend->io_append_trans) {
		error = xfs_setfilesize_ioend(ioend, error);
	} else {
		ASSERT(!xfs_ioend_is_append(ioend) ||
		       ioend->io_type == XFS_IO_COW);
	}

done:
	xfs_destroy_ioend(ioend, error);
}
Esempio n. 3
0
/*
 * Schedule IO completion handling on the final put of an ioend.
 *
 * If there is no work to do we might as well call it a day and free the
 * ioend right now.
 */
STATIC void
xfs_finish_ioend(
	struct xfs_ioend	*ioend)
{
	if (atomic_dec_and_test(&ioend->io_remaining)) {
		if (ioend->io_type == IO_UNWRITTEN)
			queue_work(xfsconvertd_workqueue, &ioend->io_work);
		else if (xfs_ioend_is_append(ioend))
			queue_work(xfsdatad_workqueue, &ioend->io_work);
		else
			xfs_destroy_ioend(ioend);
	}
}
STATIC void
xfs_end_io(
	struct work_struct *work)
{
	xfs_ioend_t	*ioend = container_of(work, xfs_ioend_t, io_work);
	struct xfs_inode *ip = XFS_I(ioend->io_inode);
	int		error = 0;

	if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
		ioend->io_error = -EIO;
		goto done;
	}
	if (ioend->io_error)
		goto done;

	/*
	 * For unwritten extents we need to issue transactions to convert a
	 * range to normal written extens after the data I/O has finished.
	 */
	if (ioend->io_type == IO_UNWRITTEN) {
		/*
		 * For buffered I/O we never preallocate a transaction when
		 * doing the unwritten extent conversion, but for direct I/O
		 * we do not know if we are converting an unwritten extent
		 * or not at the point where we preallocate the transaction.
		 */
		if (ioend->io_append_trans) {
			ASSERT(ioend->io_isdirect);

			current_set_flags_nested(
				&ioend->io_append_trans->t_pflags, PF_FSTRANS);
			xfs_trans_cancel(ioend->io_append_trans, 0);
		}

		error = xfs_iomap_write_unwritten(ip, ioend->io_offset,
						 ioend->io_size);
		if (error) {
			ioend->io_error = -error;
			goto done;
		}
	} else if (ioend->io_append_trans) {
		error = xfs_setfilesize(ioend);
		if (error)
			ioend->io_error = -error;
	} else {
		ASSERT(!xfs_ioend_is_append(ioend));
	}

done:
	xfs_destroy_ioend(ioend);
}
Esempio n. 5
0
/*
 * IO write completion.
 */
STATIC void
xfs_end_io(
	struct work_struct *work)
{
	xfs_ioend_t	*ioend = container_of(work, xfs_ioend_t, io_work);
	struct xfs_inode *ip = XFS_I(ioend->io_inode);
	int		error = 0;

	if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
		error = -EIO;
		goto done;
	}
	if (ioend->io_error)
		goto done;

	/*
	 * For unwritten extents we need to issue transactions to convert a
	 * range to normal written extens after the data I/O has finished.
	 */
	if (ioend->io_type == IO_UNWRITTEN) {
		error = xfs_iomap_write_unwritten(ip, ioend->io_offset,
						 ioend->io_size);
		if (error) {
			ioend->io_error = -error;
			goto done;
		}
	}

	/*
	 * We might have to update the on-disk file size after extending
	 * writes.
	 */
	error = xfs_setfilesize(ioend);
	ASSERT(!error || error == EAGAIN);

done:
	/*
	 * If we didn't complete processing of the ioend, requeue it to the
	 * tail of the workqueue for another attempt later. Otherwise destroy
	 * it.
	 */
	if (error == EAGAIN) {
		atomic_inc(&ioend->io_remaining);
		xfs_finish_ioend(ioend);
		/* ensure we don't spin on blocked ioends */
		delay(1);
	} else {
		xfs_destroy_ioend(ioend);
	}
}
Esempio n. 6
0
STATIC void
xfs_end_bio(
	struct bio		*bio)
{
	struct xfs_ioend	*ioend = bio->bi_private;
	struct xfs_mount	*mp = XFS_I(ioend->io_inode)->i_mount;

	if (ioend->io_type == XFS_IO_UNWRITTEN)
		queue_work(mp->m_unwritten_workqueue, &ioend->io_work);
	else if (ioend->io_append_trans)
		queue_work(mp->m_data_workqueue, &ioend->io_work);
	else
		xfs_destroy_ioend(ioend, bio->bi_error);
}
STATIC void
xfs_finish_ioend(
	struct xfs_ioend	*ioend)
{
	if (atomic_dec_and_test(&ioend->io_remaining)) {
		struct xfs_mount	*mp = XFS_I(ioend->io_inode)->i_mount;

		if (ioend->io_type == IO_UNWRITTEN)
			queue_work(mp->m_unwritten_workqueue, &ioend->io_work);
		else if (ioend->io_append_trans)
			queue_work(mp->m_data_workqueue, &ioend->io_work);
		else
			xfs_destroy_ioend(ioend);
	}
}
Esempio n. 8
0
/*
 * IO write completion.
 */
STATIC void
xfs_end_io(
	struct work_struct *work)
{
	xfs_ioend_t	*ioend = container_of(work, xfs_ioend_t, io_work);
	struct xfs_inode *ip = XFS_I(ioend->io_inode);
	int		error = 0;

	if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
		ioend->io_error = -EIO;
		goto done;
	}
	if (ioend->io_error)
		goto done;

	/*
	 * For unwritten extents we need to issue transactions to convert a
	 * range to normal written extens after the data I/O has finished.
	 */
	if (ioend->io_type == XFS_IO_UNWRITTEN) {
		error = xfs_iomap_write_unwritten(ip, ioend->io_offset,
						  ioend->io_size);
	} else if (ioend->io_isdirect && xfs_ioend_is_append(ioend)) {
		/*
		 * For direct I/O we do not know if we need to allocate blocks
		 * or not so we can't preallocate an append transaction as that
		 * results in nested reservations and log space deadlocks. Hence
		 * allocate the transaction here. While this is sub-optimal and
		 * can block IO completion for some time, we're stuck with doing
		 * it this way until we can pass the ioend to the direct IO
		 * allocation callbacks and avoid nesting that way.
		 */
		error = xfs_setfilesize_trans_alloc(ioend);
		if (error)
			goto done;
		error = xfs_setfilesize(ioend);
	} else if (ioend->io_append_trans) {
		error = xfs_setfilesize(ioend);
	} else {
		ASSERT(!xfs_ioend_is_append(ioend));
	}

done:
	if (error)
		ioend->io_error = -error;
	xfs_destroy_ioend(ioend);
}
Esempio n. 9
0
/*
 * IO write completion.
 */
STATIC void
xfs_end_io(
	struct work_struct *work)
{
	xfs_ioend_t	*ioend = container_of(work, xfs_ioend_t, io_work);
	struct xfs_inode *ip = XFS_I(ioend->io_inode);
	int		error = 0;

	/*
	 * Set an error if the mount has shut down and proceed with end I/O
	 * processing so it can perform whatever cleanups are necessary.
	 */
	if (XFS_FORCED_SHUTDOWN(ip->i_mount))
		ioend->io_error = -EIO;

	/*
	 * For unwritten extents we need to issue transactions to convert a
	 * range to normal written extens after the data I/O has finished.
	 * Detecting and handling completion IO errors is done individually
	 * for each case as different cleanup operations need to be performed
	 * on error.
	 */
	if (ioend->io_type == XFS_IO_UNWRITTEN) {
		if (ioend->io_error)
			goto done;
		error = xfs_iomap_write_unwritten(ip, ioend->io_offset,
						  ioend->io_size);
	} else if (ioend->io_append_trans) {
		error = xfs_setfilesize_ioend(ioend);
	} else {
		ASSERT(!xfs_ioend_is_append(ioend));
	}

done:
	if (error)
		ioend->io_error = error;
	xfs_destroy_ioend(ioend);
}