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authorAlan D. Brunelle <Alan.Brunelle@hp.com>2007-08-07 09:30:23 -0400
committerJens Axboe <jens.axboe@oracle.com>2007-08-11 16:34:48 -0400
commitc7149d6bce2561aeaa48caaa1700aa8b3b22008f (patch)
treecfaeda02f5bb62ccf290369b5bd3a5d3f3801cf9 /block/ll_rw_blk.c
parentec05b297f91a443aa26b74059b573bfad49c9ebb (diff)
Fix remap handling by blktrace
This patch provides more information concerning REMAP operations on block IOs. The additional information provides clearer details at the user level, and supports post-processing analysis in btt. o Adds in partition remaps on the same device. o Fixed up the remap information in DM to be in the right order o Sent up mapped-from and mapped-to device information Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/ll_rw_blk.c')
-rw-r--r--block/ll_rw_blk.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 8c2caff87cc3..a15845c164f2 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -3047,6 +3047,10 @@ static inline void blk_partition_remap(struct bio *bio)
3047 3047
3048 bio->bi_sector += p->start_sect; 3048 bio->bi_sector += p->start_sect;
3049 bio->bi_bdev = bdev->bd_contains; 3049 bio->bi_bdev = bdev->bd_contains;
3050
3051 blk_add_trace_remap(bdev_get_queue(bio->bi_bdev), bio,
3052 bdev->bd_dev, bio->bi_sector,
3053 bio->bi_sector - p->start_sect);
3050 } 3054 }
3051} 3055}
3052 3056