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authorJun'ichi "Nick" Nomura <j-nomura@ce.jp.nec.com>2006-02-01 03:04:53 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-01 08:53:11 -0800
commit3eaf840e0b0046f56602c524c7ba58a82f5526c5 (patch)
treede525d358029dd1744aa2570fe8b8f8add5f8dd1 /block
parent12f03a49cf0ab5e8511911142d28699499a572c4 (diff)
downloadlinux-2.6.34-ux500-3eaf840e0b0046f56602c524c7ba58a82f5526c5.tar.gz
[PATCH] device-mapper disk statistics: timing
Record I/O timing statistics The start time is added to struct dm_io, an existing structure allocated privately internally within dm and attached to each incoming bio. We export disk_round_stats() from block/ll_rw_blk.c instead of creating a private clone. Signed-off-by: Jun'ichi "Nick" Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'block')
-rw-r--r--block/ll_rw_blk.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index d38b4afa37e..f9fc07efd2d 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -2579,6 +2579,8 @@ void disk_round_stats(struct gendisk *disk)
disk->stamp = now;
}
+EXPORT_SYMBOL_GPL(disk_round_stats);
+
/*
* queue lock must be held
*/