diff options
Diffstat (limited to 'drivers/md/dm-cache-policy.h')
| -rw-r--r-- | drivers/md/dm-cache-policy.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/md/dm-cache-policy.h b/drivers/md/dm-cache-policy.h index 5524e21..6106ca3 100644 --- a/drivers/md/dm-cache-policy.h +++ b/drivers/md/dm-cache-policy.h @@ -178,7 +178,9 @@ struct dm_cache_policy { int (*remove_cblock)(struct dm_cache_policy *p, dm_cblock_t cblock); /* - * Provide a dirty block to be written back by the core target. + * Provide a dirty block to be written back by the core target. If + * critical_only is set then the policy should only provide work if + * it urgently needs it. * * Returns: * @@ -186,7 +188,8 @@ struct dm_cache_policy { * * -ENODATA: no dirty blocks available */ - int (*writeback_work)(struct dm_cache_policy *p, dm_oblock_t *oblock, dm_cblock_t *cblock); + int (*writeback_work)(struct dm_cache_policy *p, dm_oblock_t *oblock, dm_cblock_t *cblock, + bool critical_only); /* * How full is the cache? |