drop vmerge accounting
Remove hw_segments field from struct bio and struct request. Without virtual
merge accounting they have no purpose.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/fs/bio.c b/fs/bio.c
index 4ac7c59..bee4dec 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -208,14 +208,6 @@
return bio->bi_phys_segments;
}
-inline int bio_hw_segments(struct request_queue *q, struct bio *bio)
-{
- if (unlikely(!bio_flagged(bio, BIO_SEG_VALID)))
- blk_recount_segments(q, bio);
-
- return bio->bi_hw_segments;
-}
-
/**
* __bio_clone - clone a bio
* @bio: destination bio
@@ -350,7 +342,7 @@
*/
while (bio->bi_phys_segments >= q->max_phys_segments
- || bio->bi_hw_segments >= q->max_hw_segments) {
+ || bio->bi_phys_segments >= q->max_hw_segments) {
if (retried_segments)
return 0;
@@ -399,7 +391,6 @@
bio->bi_vcnt++;
bio->bi_phys_segments++;
- bio->bi_hw_segments++;
done:
bio->bi_size += len;
return len;
@@ -1381,7 +1372,6 @@
EXPORT_SYMBOL(__bio_clone);
EXPORT_SYMBOL(bio_clone);
EXPORT_SYMBOL(bio_phys_segments);
-EXPORT_SYMBOL(bio_hw_segments);
EXPORT_SYMBOL(bio_add_page);
EXPORT_SYMBOL(bio_add_pc_page);
EXPORT_SYMBOL(bio_get_nr_vecs);