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vm: Add KPI to dynamically register pagers

Description

vm: Add KPI to dynamically register pagers

Pager is allowed to inherit part of its implementation from the existing
pager, which is done by copying non-NULL virtual method slots.

Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D30168

Details

Provenance
kibAuthored on May 7 2021, 7:06 PM
Reviewer
markj
Differential Revision
D30168: Add KPI to dynamically register pager type
Parents
R10:7079449b0b56: sys/vm: remove several other uses of OBJT_SWAP_TMPFS
Branches
Unknown
Tags
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