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vm_fault: Stop specifying VM_ALLOC_ZERO

Description

vm_fault: Stop specifying VM_ALLOC_ZERO

Now vm_page_alloc() and friends will unconditionally preserve PG_ZERO,
so there is no point in setting this flag.

Eliminate a local variable and add a comment explaining why we
prioritize the allocation when the process is doomed.

No functional change intended.

Reviewed by: kib, alc
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32036

Details

Provenance
markjAuthored on Oct 20 2021, 12:27 AM
Reviewer
kib
Differential Revision
D32036: vm_fault: Stop specifying VM_ALLOC_ZERO
Parents
R10:6d3c78d97028: Rewrite the vm_page_alloc manual page
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