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| author | Joe Thornber <ejt@redhat.com> | 2016-09-15 15:23:46 +0200 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2016-09-22 17:15:02 +0200 |
| commit | 4e781b498ee5008ede91362d91404a362e7a46b3 (patch) | |
| tree | 039f3914f839b455759253fb0395a639a1912dae /drivers/md/dm-cache-policy-internal.h | |
| parent | dm array: add dm_array_new() (diff) | |
| download | linux-4e781b498ee5008ede91362d91404a362e7a46b3.tar.xz linux-4e781b498ee5008ede91362d91404a362e7a46b3.zip | |
dm cache: speed up writing of the hint array
It's far quicker to always delete the hint array and recreate with
dm_array_new() because we avoid the copying caused by mutation.
Also simplifies the policy interface, replacing the walk_hints() with
the simpler get_hint().
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-cache-policy-internal.h')
| -rw-r--r-- | drivers/md/dm-cache-policy-internal.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/md/dm-cache-policy-internal.h b/drivers/md/dm-cache-policy-internal.h index 2816018faa7f..808ee0e2b2c4 100644 --- a/drivers/md/dm-cache-policy-internal.h +++ b/drivers/md/dm-cache-policy-internal.h @@ -48,10 +48,10 @@ static inline int policy_load_mapping(struct dm_cache_policy *p, 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) +static inline uint32_t policy_get_hint(struct dm_cache_policy *p, + dm_cblock_t cblock) { - return p->walk_mappings ? p->walk_mappings(p, fn, context) : 0; + return p->get_hint ? p->get_hint(p, cblock) : 0; } static inline int policy_writeback_work(struct dm_cache_policy *p, |