ubd: cleanup completion path

ubd had its own block request partial completion mechanism, which is
unnecessary as block layer already does it.  Kill ubd_end_request()
and ubd_finish() and replace them with direct call to
blk_end_request().

[ Impact: cleanup ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 1 insertions, 22 deletions

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index f934225fd8ef..36ca9fa89d05 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -451,23 +451,6 @@ static void do_ubd_request(struct request_queue * q);
 
 /* Only changed by ubd_init, which is an initcall. */
 static int thread_fd = -1;
-
-static void ubd_end_request(struct request *req, int bytes, int error)
-{
-        blk_end_request(req, error, bytes);
-}
-
-/* Callable only from interrupt context - otherwise you need to do
- * spin_lock_irq()/spin_lock_irqsave() */
-static inline void ubd_finish(struct request *req, int bytes)
-{
-        if(bytes < 0){
-                ubd_end_request(req, 0, -EIO);
-                return;
-        }
-        ubd_end_request(req, bytes, 0);
-}
-
 static LIST_HEAD(restart);
 
 /* XXX - move this inside ubd_intr. */
@@ -475,7 +458,6 @@ static LIST_HEAD(restart);
 static void ubd_handler(void)
 {
         struct io_thread_req *req;
-        struct request *rq;
         struct ubd *ubd;
         struct list_head *list, *next_ele;
         unsigned long flags;
@@ -492,10 +474,7 @@ static void ubd_handler(void)
                         return;
                 }
 
-                rq = req->req;
-                rq->nr_sectors -= req->length >> 9;
-                if(rq->nr_sectors == 0)
-                        ubd_finish(rq, rq->hard_nr_sectors << 9);
+                blk_end_request(req->req, 0, req->length);
                 kfree(req);
         }
         reactivate_fd(thread_fd, UBD_IRQ);