return 1;
}
-static int ordered_bio_endio(struct request *rq, struct bio *bio,
- unsigned int nbytes, int error)
+static void req_bio_endio(struct request *rq, struct bio *bio,
+ unsigned int nbytes, int error)
{
struct request_queue *q = rq->q;
- if (&q->bar_rq != rq)
- return 0;
+ if (&q->bar_rq != rq) {
+ if (error)
+ clear_bit(BIO_UPTODATE, &bio->bi_flags);
+ else if (!test_bit(BIO_UPTODATE, &bio->bi_flags))
+ error = -EIO;
- /*
- * Okay, this is the barrier request in progress, just
- * record the error;
- */
- if (error && !q->orderr)
- q->orderr = error;
+ if (unlikely(nbytes > bio->bi_size)) {
+ printk("%s: want %u bytes done, only %u left\n",
+ __FUNCTION__, nbytes, bio->bi_size);
+ nbytes = bio->bi_size;
+ }
- return 1;
+ bio->bi_size -= nbytes;
+ bio->bi_sector += (nbytes >> 9);
+ if (bio->bi_size == 0)
+ bio_endio(bio, error);
+ } else {
+
+ /*
+ * Okay, this is the barrier request in progress, just
+ * record the error;
+ */
+ if (error && !q->orderr)
+ q->orderr = error;
+ }
}
/**
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);
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;
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;
}
return 0;
end_io:
- bio_endio(bio, nr_sectors << 9, err);
+ bio_endio(bio, err);
return 0;
}
bdevname(bio->bi_bdev, b),
(long long) bio->bi_sector);
end_io:
- bio_endio(bio, bio->bi_size, -EIO);
+ bio_endio(bio, -EIO);
break;
}
if (nr_bytes >= bio->bi_size) {
req->bio = bio->bi_next;
nbytes = bio->bi_size;
- if (!ordered_bio_endio(req, bio, nbytes, error))
- bio_endio(bio, nbytes, error);
+ req_bio_endio(req, bio, nbytes, error);
next_idx = 0;
bio_nbytes = 0;
} else {
* if the request wasn't completed, update state
*/
if (bio_nbytes) {
- if (!ordered_bio_endio(req, bio, bio_nbytes, error))
- bio_endio(bio, bio_nbytes, error);
+ req_bio_endio(req, bio, bio_nbytes, error);
bio->bi_idx += next_idx;
bio_iovec(bio)->bv_offset += nr_bytes;
bio_iovec(bio)->bv_len -= nr_bytes;
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;
* 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);