int dm_pool_block_is_shared(struct dm_pool_metadata *pmd, dm_block_t b, bool *result)
{
- int r;
+ int r = -EINVAL;
uint32_t ref_count;
down_read(&pmd->root_lock);
- r = dm_sm_get_count(pmd->data_sm, b, &ref_count);
- if (!r)
- *result = (ref_count > 1);
+ if (!pmd->fail_io) {
+ r = dm_sm_get_count(pmd->data_sm, b, &ref_count);
+ if (!r)
+ *result = (ref_count > 1);
+ }
up_read(&pmd->root_lock);
return r;
int dm_pool_inc_data_range(struct dm_pool_metadata *pmd, dm_block_t b, dm_block_t e)
{
- int r = 0;
+ int r = -EINVAL;
pmd_write_lock(pmd);
- r = dm_sm_inc_blocks(pmd->data_sm, b, e);
+ if (!pmd->fail_io)
+ r = dm_sm_inc_blocks(pmd->data_sm, b, e);
pmd_write_unlock(pmd);
return r;
int dm_pool_dec_data_range(struct dm_pool_metadata *pmd, dm_block_t b, dm_block_t e)
{
- int r = 0;
+ int r = -EINVAL;
pmd_write_lock(pmd);
- r = dm_sm_dec_blocks(pmd->data_sm, b, e);
+ if (!pmd->fail_io)
+ r = dm_sm_dec_blocks(pmd->data_sm, b, e);
pmd_write_unlock(pmd);
return r;