rbd: fix snapshot context reference count for discards
Discards take a reference to the snapshot context of an image when they are created. This reference needs to be cleaned up when the request is done just as it is for regular writes. Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
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@ -2170,7 +2170,8 @@ static void rbd_img_request_destroy(struct kref *kref)
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rbd_dev_parent_put(img_request->rbd_dev);
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}
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if (img_request_write_test(img_request))
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if (img_request_write_test(img_request) ||
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img_request_discard_test(img_request))
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ceph_put_snap_context(img_request->snapc);
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kmem_cache_free(rbd_img_request_cache, img_request);
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