From fb65d2284c117cfc28d30217d25a14a8e7a75a94 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 8 May 2013 22:50:04 -0500 Subject: [PATCH] rbd: define rbd_dev_unparent() Define rbd_dev_unparent() to encapsulate cleaning up parent data structures from a layered rbd image. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- drivers/block/rbd.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index d861c71b4005..9c2b20a88be2 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1837,6 +1837,17 @@ static void rbd_obj_request_destroy(struct kref *kref) kmem_cache_free(rbd_obj_request_cache, obj_request); } +/* It's OK to call this for a device with no parent */ + +static void rbd_spec_put(struct rbd_spec *spec); +static void rbd_dev_unparent(struct rbd_device *rbd_dev) +{ + rbd_dev_remove_parent(rbd_dev); + rbd_spec_put(rbd_dev->parent_spec); + rbd_dev->parent_spec = NULL; + rbd_dev->parent_overlap = 0; +} + /* * Caller is responsible for filling in the list of object requests * that comprises the image request, and the Linux request pointer @@ -4491,10 +4502,7 @@ static void rbd_dev_unprobe(struct rbd_device *rbd_dev) { struct rbd_image_header *header; - rbd_dev_remove_parent(rbd_dev); - rbd_spec_put(rbd_dev->parent_spec); - rbd_dev->parent_spec = NULL; - rbd_dev->parent_overlap = 0; + rbd_dev_unparent(rbd_dev); /* Free dynamic fields from the header, then zero it out */ @@ -4570,7 +4578,7 @@ static int rbd_dev_probe_parent(struct rbd_device *rbd_dev) return 0; out_err: if (parent) { - rbd_spec_put(rbd_dev->parent_spec); + rbd_dev_unparent(rbd_dev); kfree(rbd_dev->header_name); rbd_dev_destroy(parent); } else { -- 2.20.1