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sbuf(9): Add NOWAIT dynamic buffer extension mode

Description

sbuf(9): Add NOWAIT dynamic buffer extension mode

The goal is to avoid some kinds of low-memory deadlock when formatting
heap-allocated buffers.

Reviewed by: vangyzen
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21015

(cherry picked from commit 71db411eb627601a5f9a3464f88d75741927ce60)

Details

Provenance
cemAuthored on Aug 7 2019, 7:23 PM
impCommitted on Jul 16 2021, 5:43 PM
Reviewer
vangyzen
Differential Revision
D21015: sbuf(9): Add NOWAIT dynamic buffer extension mode
Parents
R10:4feb5667f59d: pf: bound DIOCGETSTATESV2 memory use
Branches
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