Date: Wed, 13 Dec 2000 10:52:44 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: Bosko Milekic <bmilekic@FreeBSD.org> Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org Subject: RE: cvs commit: src/sys/sys mbuf.h Message-ID: <XFMail.001213105244.jhb@FreeBSD.org> In-Reply-To: <200012130513.eBD5D4s83055@freefall.freebsd.org>
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On 13-Dec-00 Bosko Milekic wrote: > bmilekic 2000/12/12 21:13:03 PST > > Modified files: > sys/sys mbuf.h > Log: > Eliminate a race in MEXTFREE(). The reference counter decrement and test > was not atomic. We now make sure that we free the ext buf if the reference > count is about to reach 0 but also make sure that nobody else has done it > before us. > > While I'm here, change refcnt to u_int (from long). This fixes a compiler > warning regarding use of atomic_cmpset_long on i386. If you are using atomic_cmpset_long, then use u_long for the refcount instead of u_int please. Eitehr that, or use atomic_cmpset_int. -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.Baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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