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Move querying for atomic device params before cache start

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This needs to be done in caller application context. As part of asynchronous
management API rework, volume_open callback was moved to kernel worker thread
context. To work around this, atomic parameters are now read before cache
attach/load/probe and provided to bottom volume via volume params.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
This commit is contained in:
Adam Rutkowski
2019-04-01 17:23:34 -04:00
parent 21abb82081
commit 9670adf751
8 changed files with 37 additions and 23 deletions
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18
modules/cas_cache/volume/vol_atomic_dev_bottom.c
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@@ -986,26 +986,22 @@ void cas_atomic_close_object(ocf_volume_t volume)
block_dev_close_object(volume);
}
int cas_atomic_open_object(ocf_volume_t volume)
int cas_atomic_open_object(ocf_volume_t volume, void *volume_params)
{
int result;
uint8_t type;
struct bd_object *bdobj = NULL;
result = block_dev_open_object(volume);
if (!volume_params)
return -EINVAL;
result = block_dev_open_object(volume, volume_params);
if (result)
return result;
bdobj = bd_object(volume);
result = cas_blk_identify_type_by_bdev(bdobj->btm_bd,
&type, &bdobj->atomic_params);
if (type != ATOMIC_DEVICE_VOLUME) {
cas_atomic_close_object(volume);
result = -OCF_ERR_INVAL_VOLUME_TYPE;
goto end;
}
memcpy(&bdobj->atomic_params, volume_params,
sizeof(bdobj->atomic_params));
bdobj->workqueue = create_workqueue("CAS_AT_ZER");
if (!bdobj->workqueue) {