blktrace: from-sector redundant in trace_block_remap

Remove redundant from-sector parameter: it's /always/ the bio's sector
passed in.

[ Impact: cleanup ]

Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <49FF517C.7000503@hp.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/block/blk-core.c b/block/blk-core.c
index 07ab75403e1a5d2f753bcf0c904fda2f3bd760ef..a5f747a8312e4518d707f067992639f47d9901d8 100644 (file)
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1275,7 +1275,7 @@ static inline void blk_partition_remap(struct bio *bio)
                bio->bi_bdev = bdev->bd_contains;
 
                trace_block_remap(bdev_get_queue(bio->bi_bdev), bio,
-                                   bdev->bd_dev, bio->bi_sector,
+                                   bdev->bd_dev,
                                    bio->bi_sector - p->start_sect);
        }
 }
@@ -1444,8 +1444,7 @@ static inline void __generic_make_request(struct bio *bio)
                        goto end_io;
 
                if (old_sector != -1)
-                       trace_block_remap(q, bio, old_dev, bio->bi_sector,
-                                           old_sector);
+                       trace_block_remap(q, bio, old_dev, old_sector);
 
                trace_block_bio_queue(q, bio);
 

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 8a994be035ba47a89f677ecf34b473d41684cf52..b01514afb6b5da222a442dba243678a3ded18690 100644 (file)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -657,8 +657,7 @@ static void __map_bio(struct dm_target *ti, struct bio *clone,
                /* the bio has been remapped so dispatch it */
 
                trace_block_remap(bdev_get_queue(clone->bi_bdev), clone,
-                                   tio->io->bio->bi_bdev->bd_dev,
-                                   clone->bi_sector, sector);
+                                   tio->io->bio->bi_bdev->bd_dev, sector);
 
                generic_make_request(clone);
        } else if (r < 0 || r == DM_MAPIO_REQUEUE) {

diff --git a/include/trace/block.h b/include/trace/block.h
index 87f6456fd32e0e45e978b5164ad298dd0a0491f3..8ac945b7746eaa48a631366692c76d8b74ee6bed 100644 (file)
--- a/include/trace/block.h
+++ b/include/trace/block.h
@@ -70,7 +70,7 @@ DECLARE_TRACE(block_split,
 
 DECLARE_TRACE(block_remap,
        TP_PROTO(struct request_queue *q, struct bio *bio, dev_t dev,
-                sector_t to, sector_t from),
-             TP_ARGS(q, bio, dev, to, from));
+                sector_t to),
+             TP_ARGS(q, bio, dev, to));
 
 #endif

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index f8d46d6f5d3446ae385dad7e742851c588eea5c5..e099f8cc1d1c4568624a14a8e23644f9d2911f90 100644 (file)
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -830,7 +830,6 @@ static void blk_add_trace_split(struct request_queue *q, struct bio *bio,
  * @q:         queue the io is for
  * @bio:       the source bio
  * @dev:       target device
- * @to:                target sector
  * @from:      source sector
  *
  * Description:
@@ -839,7 +838,7 @@ static void blk_add_trace_split(struct request_queue *q, struct bio *bio,
  *
  **/
 static void blk_add_trace_remap(struct request_queue *q, struct bio *bio,
-                                      dev_t dev, sector_t to, sector_t from)
+                                      dev_t dev, sector_t from)
 {
        struct blk_trace *bt = q->blk_trace;
        struct blk_io_trace_remap r;
@@ -851,8 +850,9 @@ static void blk_add_trace_remap(struct request_queue *q, struct bio *bio,
        r.device_to   = cpu_to_be32(bio->bi_bdev->bd_dev);
        r.sector_from = cpu_to_be64(from);
 
-       __blk_add_trace(bt, from, bio->bi_size, bio->bi_rw, BLK_TA_REMAP,
-                       !bio_flagged(bio, BIO_UPTODATE), sizeof(r), &r);
+       __blk_add_trace(bt, bio->bi_sector, bio->bi_size, bio->bi_rw,
+                       BLK_TA_REMAP, !bio_flagged(bio, BIO_UPTODATE),
+                       sizeof(r), &r);
 }
 
 /**