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| author | Jun'ichi "Nick" Nomura <j-nomura@ce.jp.nec.com> | 2006-02-01 03:04:53 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-01 08:53:11 -0800 |
| commit | 3eaf840e0b0046f56602c524c7ba58a82f5526c5 (patch) | |
| tree | de525d358029dd1744aa2570fe8b8f8add5f8dd1 /block | |
| parent | 12f03a49cf0ab5e8511911142d28699499a572c4 (diff) | |
| download | linux-3eaf840e0b0046f56602c524c7ba58a82f5526c5.tar.gz linux-3eaf840e0b0046f56602c524c7ba58a82f5526c5.tar.bz2 linux-3eaf840e0b0046f56602c524c7ba58a82f5526c5.zip | |
[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.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c index d38b4afa37ef..f9fc07efd2da 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 */ |