mempool_free(bvec->bv_page, pool);
}
- bio_endio(bio_orig, bio_orig->bi_size, err);
+ bio_endio(bio_orig, err);
bio_put(bio);
}
-static int bounce_end_io_write(struct bio *bio, unsigned int bytes_done, int err)
+static void bounce_end_io_write(struct bio *bio, int err)
{
- if (bio->bi_size)
- return 1;
-
bounce_end_io(bio, page_pool, err);
- return 0;
}
-static int bounce_end_io_write_isa(struct bio *bio, unsigned int bytes_done, int err)
+static void bounce_end_io_write_isa(struct bio *bio, int err)
{
- if (bio->bi_size)
- return 1;
bounce_end_io(bio, isa_page_pool, err);
- return 0;
}
static void __bounce_end_io_read(struct bio *bio, mempool_t *pool, int err)
bounce_end_io(bio, pool, err);
}
-static int bounce_end_io_read(struct bio *bio, unsigned int bytes_done, int err)
+static void bounce_end_io_read(struct bio *bio, int err)
{
- if (bio->bi_size)
- return 1;
-
__bounce_end_io_read(bio, page_pool, err);
- return 0;
}
-static int bounce_end_io_read_isa(struct bio *bio, unsigned int bytes_done, int err)
+static void bounce_end_io_read_isa(struct bio *bio, int err)
{
- if (bio->bi_size)
- return 1;
-
__bounce_end_io_read(bio, isa_page_pool, err);
- return 0;
}
-static void __blk_queue_bounce(request_queue_t *q, struct bio **bio_orig,
+static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig,
mempool_t *pool)
{
struct page *page;
/*
* is destination page below bounce pfn?
*/
- if (page_to_pfn(page) < q->bounce_pfn)
+ if (page_to_pfn(page) <= q->bounce_pfn)
continue;
/*
if (!bio)
return;
+ blk_add_trace_bio(q, *bio_orig, BLK_TA_BOUNCE);
+
/*
* at least one page was bounced, fill in possible non-highmem
* pages
*bio_orig = bio;
}
-void blk_queue_bounce(request_queue_t *q, struct bio **bio_orig)
+void blk_queue_bounce(struct request_queue *q, struct bio **bio_orig)
{
mempool_t *pool;
+ /*
+ * Data-less bio, nothing to bounce
+ */
+ if (!bio_has_data(*bio_orig))
+ return;
+
/*
* for non-isa bounce case, just check if the bounce pfn is equal
* to or bigger than the highest pfn in the system -- in that case,
pool = isa_page_pool;
}
- blk_add_trace_bio(q, *bio_orig, BLK_TA_BOUNCE);
-
/*
* slow path
*/