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| author | Mike Snitzer <snitzer@redhat.com> | 2009-09-04 20:40:25 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-09-04 20:40:25 +0100 |
| commit | 40bea431274c247425e7f5970d796ff7b37a2b22 (patch) | |
| tree | cc9791861c01605d2dca28d3eac9182c301a832c /drivers/md/dm-table.c | |
| parent | a963a956225eb0f8c4d3537f428153c30adf54b8 (diff) | |
| download | linux-40bea431274c247425e7f5970d796ff7b37a2b22.tar.gz | |
dm stripe: expose correct io hints
Set sensible I/O hints for striped DM devices in the topology infrastructure added for 2.6.31 for userspace tools to obtain via sysfs. Add .io_hints to 'struct target_type' to allow the I/O hints portion (io_min and io_opt) of the 'struct queue_limits' to be set by each target and implement this for dm-stripe. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-table.c')
| -rw-r--r-- | drivers/md/dm-table.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index c90e662d2802..1a6cb3c7822e 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1007,6 +1007,10 @@ int dm_calculate_queue_limits(struct dm_table *table, ti->type->iterate_devices(ti, dm_set_device_limits, &ti_limits); + /* Set I/O hints portion of queue limits */ + if (ti->type->io_hints) + ti->type->io_hints(ti, &ti_limits); + /* * Check each device area is consistent with the target's * overall queue limits. |