Date: Sun, 6 Dec 2020 22:45:22 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r368398 - head/sys/vm Message-ID: <202012062245.0B6MjM65032508@repo.freebsd.org>
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Author: markj Date: Sun Dec 6 22:45:22 2020 New Revision: 368398 URL: https://svnweb.freebsd.org/changeset/base/368398 Log: uma: Use atomic load for uz_sleepers This field is updated locklessly. Sponsored by: The FreeBSD Foundation Modified: head/sys/vm/uma_core.c Modified: head/sys/vm/uma_core.c ============================================================================== --- head/sys/vm/uma_core.c Sun Dec 6 21:34:04 2020 (r368397) +++ head/sys/vm/uma_core.c Sun Dec 6 22:45:22 2020 (r368398) @@ -4186,7 +4186,7 @@ uma_zfree_arg(uma_zone_t zone, void *item, void *udata * a little longer for the limits to be reset. */ if (__predict_false(uz_flags & UMA_ZFLAG_LIMIT)) { - if (zone->uz_sleepers > 0) + if (atomic_load_32(&zone->uz_sleepers) > 0) goto zfree_item; }
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