[PATCH] nbd: Abort request on data reception failure

When reading from nbd device, we need to receive all the data after
receiving reply packet from the server - otherwise such request will never
be ended.

If socket is closed right after accepting reply control packet and in the
middle of waiting for read data, nbd_read_stat() returns NULL and
nbd_end_request() is not called.

This patch fixes it.

Signed-off-by: Michal Feix <michal@feix.cz>
Acked-by: Paul Clements <paul.clements@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 31a0b605f261457f9d07c0c49c04d0b16e958796..bdbade9a5cf50a99e3b2e3fa3f860d71f36bfe82 100644 (file)
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -341,7 +341,8 @@ static struct request *nbd_read_stat(struct nbd_device *lo)
                                        printk(KERN_ERR "%s: Receive data failed (result %d)\n",
                                                        lo->disk->disk_name,
                                                        result);
-                                       goto harderror;
+                                       req->errors++;
+                                       return req;
                                }
                                dprintk(DBG_RX, "%s: request %p: got %d bytes data\n",
                                        lo->disk->disk_name, req, bvec->bv_len);