Date: Tue, 11 Apr 2017 17:13:56 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r316708 - stable/11/sys/kern Message-ID: <201704111713.v3BHDuAQ049058@repo.freebsd.org>
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Author: markj Date: Tue Apr 11 17:13:56 2017 New Revision: 316708 URL: https://svnweb.freebsd.org/changeset/base/316708 Log: MFC r315289: When draining a callout, don't clear CALLOUT_ACTIVE while it is running. Modified: stable/11/sys/kern/kern_timeout.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/kern/kern_timeout.c ============================================================================== --- stable/11/sys/kern/kern_timeout.c Tue Apr 11 17:06:52 2017 (r316707) +++ stable/11/sys/kern/kern_timeout.c Tue Apr 11 17:13:56 2017 (r316708) @@ -1254,9 +1254,12 @@ again: if (cc_exec_curr(cc, direct) == c) { /* * Succeed we to stop it or not, we must clear the - * active flag - this is what API users expect. + * active flag - this is what API users expect. If we're + * draining and the callout is currently executing, first wait + * until it finishes. */ - c->c_flags &= ~CALLOUT_ACTIVE; + if ((flags & CS_DRAIN) == 0) + c->c_flags &= ~CALLOUT_ACTIVE; if ((flags & CS_DRAIN) != 0) { /* @@ -1315,6 +1318,7 @@ again: PICKUP_GIANT(); CC_LOCK(cc); } + c->c_flags &= ~CALLOUT_ACTIVE; } else if (use_lock && !cc_exec_cancel(cc, direct) && (drain == NULL)) {
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