block: dump request state on seeing a corrupted request completion

Currently we just dump a non-informative 'request botched' message.
Lets actually try and print something sane to help debug issues
around this.

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

diff --git a/block/blk-core.c b/block/blk-core.c
index e0a0623..4fdf895 100644 (file)
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2163,7 +2163,7 @@ bool blk_update_request(struct request *req, int error, unsigned int nr_bytes)
         * size, something has gone terribly wrong.
         */
        if (blk_rq_bytes(req) < blk_rq_cur_bytes(req)) {
-               printk(KERN_ERR "blk: request botched\n");
+               blk_dump_rq_flags(req, "request botched");
                req->__data_len = blk_rq_cur_bytes(req);
        }