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vfs: use finstall_refed in openat

Description

vfs: use finstall_refed in openat

This avoids 2 atomic ops in the common case: 1 to grab an extra
reference and 1 to release it.

Details

Provenance
mjgAuthored on Jan 12 2021, 4:11 PM
Parents
R10:530b699a62ad: fd: add finstall_refed
Branches
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