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authorAlan D. Brunelle <Alan.Brunelle@hp.com>2007-08-07 15:30:23 +0200
committerJens Axboe <jens.axboe@oracle.com>2007-08-11 22:34:48 +0200
commitc7149d6bce2561aeaa48caaa1700aa8b3b22008f (patch)
treecfaeda02f5bb62ccf290369b5bd3a5d3f3801cf9 /block
parentec05b297f91a443aa26b74059b573bfad49c9ebb (diff)
downloadblackbird-op-linux-c7149d6bce2561aeaa48caaa1700aa8b3b22008f.tar.gz
blackbird-op-linux-c7149d6bce2561aeaa48caaa1700aa8b3b22008f.zip
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')
-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)
bio->bi_sector += p->start_sect;
bio->bi_bdev = bdev->bd_contains;
+
+ blk_add_trace_remap(bdev_get_queue(bio->bi_bdev), bio,
+ bdev->bd_dev, bio->bi_sector,
+ bio->bi_sector - p->start_sect);
}
}
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