deny partial write for loop dev fd

[linux-2.6] / block / ll_rw_blk.c

diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index b55ed0df33f06f3ed87ebb63ce7a7d8195f8b110..a83823fcd74f3f90a42d8a470cad9947c5cdd56f 100644 (file)
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -547,7 +547,7 @@ static void req_bio_endio(struct request *rq, struct bio *bio,
                bio->bi_size -= nbytes;
                bio->bi_sector += (nbytes >> 9);
                if (bio->bi_size == 0)
-                       bio_endio(bio, bio->bi_size, error);
+                       bio_endio(bio, error);
        } else {
 
                /*
@@ -1854,7 +1854,7 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
 
        init_timer(&q->unplug_timer);
 
-       snprintf(q->kobj.name, KOBJ_NAME_LEN, "%s", "queue");
+       kobject_set_name(&q->kobj, "%s", "queue");
        q->kobj.ktype = &queue_ktype;
        kobject_init(&q->kobj);
 
@@ -2401,7 +2401,7 @@ static int __blk_rq_map_user(struct request_queue *q, struct request *rq,
                return bio->bi_size;
 
        /* if it was boucned we must call the end io function */
-       bio_endio(bio, bio->bi_size, 0);
+       bio_endio(bio, 0);
        __blk_rq_unmap_user(orig_bio);
        bio_put(bio);
        return ret;
@@ -2510,7 +2510,7 @@ int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,
                return PTR_ERR(bio);
 
        if (bio->bi_size != len) {
-               bio_endio(bio, bio->bi_size, 0);
+               bio_endio(bio, 0);
                bio_unmap_user(bio);
                return -EINVAL;
        }
@@ -3040,7 +3040,7 @@ out:
        return 0;
 
 end_io:
-       bio_endio(bio, nr_sectors << 9, err);
+       bio_endio(bio, err);
        return 0;
 }
 
@@ -3187,7 +3187,7 @@ static inline void __generic_make_request(struct bio *bio)
                                bdevname(bio->bi_bdev, b),
                                (long long) bio->bi_sector);
 end_io:
-                       bio_endio(bio, bio->bi_size, -EIO);
+                       bio_endio(bio, -EIO);
                        break;
                }
 
@@ -3928,7 +3928,6 @@ queue_max_sectors_store(struct request_queue *q, const char *page, size_t count)
                        max_hw_sectors_kb = q->max_hw_sectors >> 1,
                        page_kb = 1 << (PAGE_CACHE_SHIFT - 10);
        ssize_t ret = queue_var_store(&max_sectors_kb, page, count);
-       int ra_kb;
 
        if (max_sectors_kb > max_hw_sectors_kb || max_sectors_kb < page_kb)
                return -EINVAL;
@@ -3937,14 +3936,6 @@ queue_max_sectors_store(struct request_queue *q, const char *page, size_t count)
         * values synchronously:
         */
        spin_lock_irq(q->queue_lock);
-       /*
-        * Trim readahead window as well, if necessary:
-        */
-       ra_kb = q->backing_dev_info.ra_pages << (PAGE_CACHE_SHIFT - 10);
-       if (ra_kb > max_sectors_kb)
-               q->backing_dev_info.ra_pages =
-                               max_sectors_kb >> (PAGE_CACHE_SHIFT - 10);
-
        q->max_sectors = max_sectors_kb << 1;
        spin_unlock_irq(q->queue_lock);