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dev-cache: Filter wipe does not guarantee a full /dev scan.

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The code in dev_iter_create assumes that if a filter can be wiped, doing so will
always trigger a call to _full_scan. This is not true for composite filters
though, since they can always be wiped in principle, but there is no way to know
that a component filter inside will exist that actually triggers the scan.
This commit is contained in:
Petr Rockai 2014-09-09 17:14:35 +02:00 committed by Alasdair G Kergon
parent 47ff145e08
commit 1f0c4c811d
1 changed files with 5 additions and 3 deletions
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8
lib/device/dev-cache.c
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@ -1009,9 +1009,11 @@ struct dev_iter *dev_iter_create(struct dev_filter *f, int dev_scan)
if (dev_scan && !trust_cache()) {
/* Flag gets reset between each command */
if (!full_scan_done()) {
if (f && f->wipe)
f->wipe(f); /* Calls _full_scan(1) */
else
if (f && f->wipe) {
f->wipe(f); /* might call _full_scan(1) */
if (!full_scan_done())
_full_scan(1);
} else
_full_scan(1);
}
} else