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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/md/dm-cache-policy-internal.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/md/dm-cache-policy-internal.h')
-rw-r--r-- | kernel/drivers/md/dm-cache-policy-internal.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/kernel/drivers/md/dm-cache-policy-internal.h b/kernel/drivers/md/dm-cache-policy-internal.h new file mode 100644 index 000000000..2256a1f24 --- /dev/null +++ b/kernel/drivers/md/dm-cache-policy-internal.h @@ -0,0 +1,131 @@ +/* + * Copyright (C) 2012 Red Hat. All rights reserved. + * + * This file is released under the GPL. + */ + +#ifndef DM_CACHE_POLICY_INTERNAL_H +#define DM_CACHE_POLICY_INTERNAL_H + +#include "dm-cache-policy.h" + +/*----------------------------------------------------------------*/ + +/* + * Little inline functions that simplify calling the policy methods. + */ +static inline int policy_map(struct dm_cache_policy *p, dm_oblock_t oblock, + bool can_block, bool can_migrate, bool discarded_oblock, + struct bio *bio, struct policy_result *result) +{ + return p->map(p, oblock, can_block, can_migrate, discarded_oblock, bio, result); +} + +static inline int policy_lookup(struct dm_cache_policy *p, dm_oblock_t oblock, dm_cblock_t *cblock) +{ + BUG_ON(!p->lookup); + return p->lookup(p, oblock, cblock); +} + +static inline void policy_set_dirty(struct dm_cache_policy *p, dm_oblock_t oblock) +{ + if (p->set_dirty) + p->set_dirty(p, oblock); +} + +static inline void policy_clear_dirty(struct dm_cache_policy *p, dm_oblock_t oblock) +{ + if (p->clear_dirty) + p->clear_dirty(p, oblock); +} + +static inline int policy_load_mapping(struct dm_cache_policy *p, + dm_oblock_t oblock, dm_cblock_t cblock, + uint32_t hint, bool hint_valid) +{ + return p->load_mapping(p, oblock, cblock, hint, hint_valid); +} + +static inline int policy_walk_mappings(struct dm_cache_policy *p, + policy_walk_fn fn, void *context) +{ + return p->walk_mappings ? p->walk_mappings(p, fn, context) : 0; +} + +static inline int policy_writeback_work(struct dm_cache_policy *p, + dm_oblock_t *oblock, + dm_cblock_t *cblock) +{ + return p->writeback_work ? p->writeback_work(p, oblock, cblock) : -ENOENT; +} + +static inline void policy_remove_mapping(struct dm_cache_policy *p, dm_oblock_t oblock) +{ + p->remove_mapping(p, oblock); +} + +static inline int policy_remove_cblock(struct dm_cache_policy *p, dm_cblock_t cblock) +{ + return p->remove_cblock(p, cblock); +} + +static inline void policy_force_mapping(struct dm_cache_policy *p, + dm_oblock_t current_oblock, dm_oblock_t new_oblock) +{ + return p->force_mapping(p, current_oblock, new_oblock); +} + +static inline dm_cblock_t policy_residency(struct dm_cache_policy *p) +{ + return p->residency(p); +} + +static inline void policy_tick(struct dm_cache_policy *p) +{ + if (p->tick) + return p->tick(p); +} + +static inline int policy_emit_config_values(struct dm_cache_policy *p, char *result, unsigned maxlen) +{ + ssize_t sz = 0; + if (p->emit_config_values) + return p->emit_config_values(p, result, maxlen); + + DMEMIT("0"); + return 0; +} + +static inline int policy_set_config_value(struct dm_cache_policy *p, + const char *key, const char *value) +{ + return p->set_config_value ? p->set_config_value(p, key, value) : -EINVAL; +} + +/*----------------------------------------------------------------*/ + +/* + * Creates a new cache policy given a policy name, a cache size, an origin size and the block size. + */ +struct dm_cache_policy *dm_cache_policy_create(const char *name, dm_cblock_t cache_size, + sector_t origin_size, sector_t block_size); + +/* + * Destroys the policy. This drops references to the policy module as well + * as calling it's destroy method. So always use this rather than calling + * the policy->destroy method directly. + */ +void dm_cache_policy_destroy(struct dm_cache_policy *p); + +/* + * In case we've forgotten. + */ +const char *dm_cache_policy_get_name(struct dm_cache_policy *p); + +const unsigned *dm_cache_policy_get_version(struct dm_cache_policy *p); + +size_t dm_cache_policy_get_hint_size(struct dm_cache_policy *p); + +/*----------------------------------------------------------------*/ + +#endif /* DM_CACHE_POLICY_INTERNAL_H */ |