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dm cache: pass cache structure to mode functions 

No functional changes, just a bit cleaner than passing cache_features
structure.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mike Snitzer 2017-10-19 21:01:04 -04:00
parent d1260e2a3f
commit 8e3c382777
1 changed files with 16 additions and 16 deletions
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32
drivers/md/dm-cache-target.c
View File

@ -515,19 +515,19 @@ struct dm_cache_migration {
/*----------------------------------------------------------------*/
static bool writethrough_mode(struct cache_features *f)
static bool writethrough_mode(struct cache *cache)
{
return f->io_mode == CM_IO_WRITETHROUGH;
return cache->features.io_mode == CM_IO_WRITETHROUGH;
}
static bool writeback_mode(struct cache_features *f)
static bool writeback_mode(struct cache *cache)
{
return f->io_mode == CM_IO_WRITEBACK;
return cache->features.io_mode == CM_IO_WRITEBACK;
}
static inline bool passthrough_mode(struct cache_features *f)
static inline bool passthrough_mode(struct cache *cache)
{
return unlikely(f->io_mode == CM_IO_PASSTHROUGH);
return unlikely(cache->features.io_mode == CM_IO_PASSTHROUGH);
}
/*----------------------------------------------------------------*/
@ -544,7 +544,7 @@ static void wake_deferred_writethrough_worker(struct cache *cache)
static void wake_migration_worker(struct cache *cache)
{
if (passthrough_mode(&cache->features))
if (passthrough_mode(cache))
return;
queue_work(cache->wq, &cache->migration_worker);
@ -626,7 +626,7 @@ static unsigned lock_level(struct bio *bio)
static size_t get_per_bio_data_size(struct cache *cache)
{
return writethrough_mode(&cache->features) ? PB_DATA_SIZE_WT : PB_DATA_SIZE_WB;
return writethrough_mode(cache) ? PB_DATA_SIZE_WT : PB_DATA_SIZE_WB;
}
static struct per_bio_data *get_per_bio_data(struct bio *bio, size_t data_size)
@ -1209,7 +1209,7 @@ static bool bio_writes_complete_block(struct cache *cache, struct bio *bio)
static bool optimisable_bio(struct cache *cache, struct bio *bio, dm_oblock_t block)
{
return writeback_mode(&cache->features) &&
return writeback_mode(cache) &&
(is_discarded_oblock(cache, block) || bio_writes_complete_block(cache, bio));
}
@ -1862,7 +1862,7 @@ static int map_bio(struct cache *cache, struct bio *bio, dm_oblock_t block,
* Passthrough always maps to the origin, invalidating any
* cache blocks that are written to.
*/
if (passthrough_mode(&cache->features)) {
if (passthrough_mode(cache)) {
if (bio_data_dir(bio) == WRITE) {
bio_drop_shared_lock(cache, bio);
atomic_inc(&cache->stats.demotion);
@ -1871,7 +1871,7 @@ static int map_bio(struct cache *cache, struct bio *bio, dm_oblock_t block,
remap_to_origin_clear_discard(cache, bio, block);
} else {
if (bio_data_dir(bio) == WRITE && writethrough_mode(&cache->features) &&
if (bio_data_dir(bio) == WRITE && writethrough_mode(cache) &&
!is_dirty(cache, cblock)) {
remap_to_origin_then_cache(cache, bio, block, cblock);
accounted_begin(cache, bio);
@ -2638,7 +2638,7 @@ static int cache_create(struct cache_args *ca, struct cache **result)
goto bad;
}
if (passthrough_mode(&cache->features)) {
if (passthrough_mode(cache)) {
bool all_clean;
r = dm_cache_metadata_all_clean(cache->cmd, &all_clean);
@ -3263,13 +3263,13 @@ static void cache_status(struct dm_target *ti, status_type_t type,
else
DMEMIT("1 ");
if (writethrough_mode(&cache->features))
if (writethrough_mode(cache))
DMEMIT("writethrough ");
else if (passthrough_mode(&cache->features))
else if (passthrough_mode(cache))
DMEMIT("passthrough ");
else if (writeback_mode(&cache->features))
else if (writeback_mode(cache))
DMEMIT("writeback ");
else {
@ -3435,7 +3435,7 @@ static int process_invalidate_cblocks_message(struct cache *cache, unsigned coun
unsigned i;
struct cblock_range range;
if (!passthrough_mode(&cache->features)) {
if (!passthrough_mode(cache)) {
DMERR("%s: cache has to be in passthrough mode for invalidation",
cache_device_name(cache));
return -EPERM;