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| author | Gvozden Neskovic <[email protected]> | 2016-12-03 00:59:35 +0100 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2016-12-02 16:59:35 -0700 |
| commit | e8a2014436147d07442e52f854e197082748fca6 (patch) | |
| tree | 45eabe29ed4c7848ffe15f81e09d1e948096828b /module/zfs/spa_misc.c | |
| parent | baf67d15a59025fb53fc60bf439ef291397366e8 (diff) | |
Cache ddt_get_dedup_dspace() value if there was no ddt changes
Save and reuse ddt dspace calculation when there have been no ddt changes.
This avoids unnecessary traversal of 168KiB of ddt histograms.
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Gvozden Neskovic <[email protected]>
Closes #5425
Diffstat (limited to 'module/zfs/spa_misc.c')
| -rw-r--r-- | module/zfs/spa_misc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/module/zfs/spa_misc.c b/module/zfs/spa_misc.c index 6ec05214e..909002cf5 100644 --- a/module/zfs/spa_misc.c +++ b/module/zfs/spa_misc.c @@ -635,6 +635,9 @@ spa_add(const char *name, nvlist_t *config, const char *altroot) spa->spa_min_ashift = INT_MAX; spa->spa_max_ashift = 0; + /* Reset cached value */ + spa->spa_dedup_dspace = ~0ULL; + /* * As a pool is being created, treat all features as disabled by * setting SPA_FEATURE_DISABLED for all entries in the feature |