CVS commit: src/sys/kern

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Thu Feb 23 03:00:53 UTC 2023

Modified Files:
        src/sys/kern: subr_pcq.c

Log Message:
pcq(9): Make pcq_put a release operation, in memory ordering.

Otherwise, for example, the following assertion could fail:

        /* publisher */
        nusers = foo->nusers;
        pcq_put(pcq, foo);
        KASSERT(nusers == 0);

        /* user */
        foo = pcq_get(pcq);
        if (foo != NULL)
                atomic_inc_uint(&foo->nusers);

XXX pullup-9
XXX pullup-10


To generate a diff of this commit:
cvs rdiff -u -r1.13 -r1.14 src/sys/kern/subr_pcq.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.