From 5c5bf698d4a0b722dd468111acbefa09d9587d5b Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Fri, 6 Mar 2009 08:55:24 +0100
Subject: [PATCH] --- yaml --- r: 132028 b: refs/heads/master c:
 59247eaea50cc68cc6ce3d3fd3855f3301b65c96 h: refs/heads/master v: v3

---
 [refs]                  |  2 +-
 trunk/block/blk-merge.c | 25 +++++++++----------------
 2 files changed, 10 insertions(+), 17 deletions(-)

diff --git a/[refs] b/[refs]
index 2f7abe43352a..eb02ba3bf4f9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a3941ec101a5ec54c1e929730afeb196441a171e
+refs/heads/master: 59247eaea50cc68cc6ce3d3fd3855f3301b65c96
diff --git a/trunk/block/blk-merge.c b/trunk/block/blk-merge.c
index a104593e70c3..5a244f05360f 100644
--- a/trunk/block/blk-merge.c
+++ b/trunk/block/blk-merge.c
@@ -39,14 +39,13 @@ void blk_recalc_rq_sectors(struct request *rq, int nsect)
 }
 
 static unsigned int __blk_recalc_rq_segments(struct request_queue *q,
-					     struct bio *bio,
-					     unsigned int *seg_size_ptr)
+					     struct bio *bio)
 {
 	unsigned int phys_size;
 	struct bio_vec *bv, *bvprv = NULL;
 	int cluster, i, high, highprv = 1;
 	unsigned int seg_size, nr_phys_segs;
-	struct bio *fbio;
+	struct bio *fbio, *bbio;
 
 	if (!bio)
 		return 0;
@@ -87,26 +86,20 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q,
 			seg_size = bv->bv_len;
 			highprv = high;
 		}
+		bbio = bio;
 	}
 
-	if (seg_size_ptr)
-		*seg_size_ptr = seg_size;
+	if (nr_phys_segs == 1 && seg_size > fbio->bi_seg_front_size)
+		fbio->bi_seg_front_size = seg_size;
+	if (seg_size > bbio->bi_seg_back_size)
+		bbio->bi_seg_back_size = seg_size;
 
 	return nr_phys_segs;
 }
 
 void blk_recalc_rq_segments(struct request *rq)
 {
-	unsigned int seg_size = 0, phys_segs;
-
-	phys_segs = __blk_recalc_rq_segments(rq->q, rq->bio, &seg_size);
-
-	if (phys_segs == 1 && seg_size > rq->bio->bi_seg_front_size)
-		rq->bio->bi_seg_front_size = seg_size;
-	if (seg_size > rq->biotail->bi_seg_back_size)
-		rq->biotail->bi_seg_back_size = seg_size;
-
-	rq->nr_phys_segments = phys_segs;
+	rq->nr_phys_segments = __blk_recalc_rq_segments(rq->q, rq->bio);
 }
 
 void blk_recount_segments(struct request_queue *q, struct bio *bio)
@@ -114,7 +107,7 @@ void blk_recount_segments(struct request_queue *q, struct bio *bio)
 	struct bio *nxt = bio->bi_next;
 
 	bio->bi_next = NULL;
-	bio->bi_phys_segments = __blk_recalc_rq_segments(q, bio, NULL);
+	bio->bi_phys_segments = __blk_recalc_rq_segments(q, bio);
 	bio->bi_next = nxt;
 	bio->bi_flags |= (1 << BIO_SEG_VALID);
 }