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Code Issues Releases Activity

Don't assert that the domain free lock is held until we're certain that

Browse Source 
there is a valid reservation.  This can trip erroneously when memory
falls within a domain but doesn't have the reservation initialized because
it does not meet size or alignment requirements.

Reported by:	pho, mjg
Sponsored by:	Netflix, Dell/EMC Isilon
This commit is contained in:
Jeff Roberson 2018-03-07 22:04:27 +00:00
parent dec08e67e4
commit f4af595964
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=330624
1 changed files with 2 additions and 2 deletions
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4
sys/vm/vm_reserv.c
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@ -1044,9 +1044,9 @@ vm_reserv_free_page(vm_page_t m)
vm_reserv_t rv;
rv = vm_reserv_from_page(m);
vm_domain_free_assert_locked(VM_DOMAIN(rv->domain));
if (rv->object == NULL)
return (FALSE);
vm_domain_free_assert_locked(VM_DOMAIN(rv->domain));
vm_reserv_depopulate(rv, m - rv->pages);
return (TRUE);
}
@ -1093,9 +1093,9 @@ vm_reserv_is_page_free(vm_page_t m)
vm_reserv_t rv;
rv = vm_reserv_from_page(m);
vm_domain_free_assert_locked(VM_DOMAIN(rv->domain));
if (rv->object == NULL)
return (false);
vm_domain_free_assert_locked(VM_DOMAIN(rv->domain));
return (popmap_is_clear(rv->popmap, m - rv->pages));
}