Date: Wed, 1 Oct 2014 16:16:01 +0000 (UTC) From: Will Andrews <will@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r272371 - head/sys/sys Message-ID: <201410011616.s91GG1Oh070888@svn.freebsd.org>
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Author: will Date: Wed Oct 1 16:16:01 2014 New Revision: 272371 URL: https://svnweb.freebsd.org/changeset/base/272371 Log: Embellish a comment regarding the reliability of DEBUG_VFS_LOCKS. Submitted by: kib Modified: head/sys/sys/vnode.h Modified: head/sys/sys/vnode.h ============================================================================== --- head/sys/sys/vnode.h Wed Oct 1 16:09:11 2014 (r272370) +++ head/sys/sys/vnode.h Wed Oct 1 16:16:01 2014 (r272371) @@ -503,7 +503,9 @@ extern struct vnodeop_desc *vnodeop_desc * reliable since if the thread sleeps between changing the lock * state and checking it with the assert, some other thread could * change the state. They are good enough for debugging a single - * filesystem using a single-threaded test. + * filesystem using a single-threaded test. Note that the unreliability is + * limited to false negatives; efforts were made to ensure that false + * positives cannot occur. */ void assert_vi_locked(struct vnode *vp, const char *str); void assert_vi_unlocked(struct vnode *vp, const char *str);
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