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dev-cache: Make it possible to pass in a NULL filter.

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This commit is contained in:
Petr Rockai 2012-08-18 22:03:46 +02:00
parent 012d273ede
commit 72d82e21d4
1 changed files with 5 additions and 3 deletions
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8
lib/device/dev-cache.c
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@ -971,21 +971,23 @@ struct dev_iter *dev_iter_create(struct dev_filter *f, int dev_scan)
if (dev_scan && !trust_cache()) { if (dev_scan && !trust_cache()) {
/* Flag gets reset between each command */ /* Flag gets reset between each command */
if (!full_scan_done()) if (!full_scan_done() && f)
persistent_filter_wipe(f); /* Calls _full_scan(1) */ persistent_filter_wipe(f); /* Calls _full_scan(1) */
} else } else
_full_scan(0); _full_scan(0);
di->current = btree_first(_cache.devices); di->current = btree_first(_cache.devices);
di->filter = f; di->filter = f;
di->filter->use_count++; if (di->filter)
di->filter->use_count++;
return di; return di;
} }
void dev_iter_destroy(struct dev_iter *iter) void dev_iter_destroy(struct dev_iter *iter)
{ {
iter->filter->use_count--; if (iter->filter)
iter->filter->use_count--;
dm_free(iter); dm_free(iter);
} }