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Commit 5ff1108c authored by Ilya Dryomov's avatar Ilya Dryomov
Browse files

rbd: update mapping size only on refresh 



There is no sense in trying to update the mapping size before it's even
been set.

Signed-off-by: default avatarIlya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: default avatarAlex Elder <elder@linaro.org>
parent 52bb1f9b

drivers/block/rbd.c

+7 −12
Original line number Diff line number Diff line
@@ -971,12 +971,6 @@ static int rbd_header_from_disk(struct rbd_device *rbd_dev, 
	header->snap_names = snap_names;

	header->snap_sizes = snap_sizes;



	/* Make sure mapping size is consistent with header info */



	if (rbd_dev->spec->snap_id == CEPH_NOSNAP || first_time)

		if (rbd_dev->mapping.size != header->image_size)

			rbd_dev->mapping.size = header->image_size;



	return 0;

out_2big:

	ret = -EIO;
@@ -3522,9 +3516,14 @@ static int rbd_dev_refresh(struct rbd_device *rbd_dev) 
	if (ret)

		return ret;



	/* If it's a mapped snapshot, validate its EXISTS flag */



	if (rbd_dev->spec->snap_id == CEPH_NOSNAP) {

		if (rbd_dev->mapping.size != rbd_dev->header.image_size)

			rbd_dev->mapping.size = rbd_dev->header.image_size;

	} else {

		/* validate mapped snapshot's EXISTS flag */

		rbd_exists_validate(rbd_dev);

	}



	up_write(&rbd_dev->header_rwsem);



	if (mapping_size != rbd_dev->mapping.size) {
@@ -4507,10 +4506,6 @@ static int rbd_dev_v2_header_info(struct rbd_device *rbd_dev) 
					"is EXPERIMENTAL!");

	}



	if (rbd_dev->spec->snap_id == CEPH_NOSNAP)

		if (rbd_dev->mapping.size != rbd_dev->header.image_size)

			rbd_dev->mapping.size = rbd_dev->header.image_size;



	ret = rbd_dev_v2_snap_context(rbd_dev);

	dout("rbd_dev_v2_snap_context returned %d\n", ret);