Date: Sat, 6 Nov 2010 11:17:30 +0000 (UTC) From: Lawrence Stewart <lstewart@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r214869 - stable/7/sys/kern Message-ID: <201011061117.oA6BHU1J029084@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: lstewart Date: Sat Nov 6 11:17:30 2010 New Revision: 214869 URL: http://svn.freebsd.org/changeset/base/214869 Log: MFC r206026: - Factor code to destroy an ALQ out of alq_close() into a private alq_destroy(). - Use the new alq_destroy() to properly handle a failure case in alq_open(). Sponsored by: FreeBSD Foundation Reviewed by: dwmalone, jeff, rpaulo, rwatson (as part of a larger patch) Modified: stable/7/sys/kern/kern_alq.c Directory Properties: stable/7/sys/ (props changed) stable/7/sys/cddl/contrib/opensolaris/ (props changed) stable/7/sys/contrib/dev/acpica/ (props changed) stable/7/sys/contrib/pf/ (props changed) Modified: stable/7/sys/kern/kern_alq.c ============================================================================== --- stable/7/sys/kern/kern_alq.c Sat Nov 6 11:09:04 2010 (r214868) +++ stable/7/sys/kern/kern_alq.c Sat Nov 6 11:17:30 2010 (r214869) @@ -103,6 +103,7 @@ static void ald_deactivate(struct alq *) /* Internal queue functions */ static void alq_shutdown(struct alq *); +static void alq_destroy(struct alq *); static int alq_doio(struct alq *); @@ -265,6 +266,18 @@ alq_shutdown(struct alq *alq) crfree(alq->aq_cred); } +void +alq_destroy(struct alq *alq) +{ + /* Drain all pending IO. */ + alq_shutdown(alq); + + mtx_destroy(&alq->aq_mtx); + free(alq->aq_first, M_ALD); + free(alq->aq_entbuf, M_ALD); + free(alq, M_ALD); +} + /* * Flush all pending data to disk. This operation will block. */ @@ -423,8 +436,11 @@ alq_open(struct alq **alqp, const char * alp->ae_next = alq->aq_first; - if ((error = ald_add(alq)) != 0) + if ((error = ald_add(alq)) != 0) { + alq_destroy(alq); return (error); + } + *alqp = alq; return (0); @@ -530,22 +546,9 @@ alq_flush(struct alq *alq) void alq_close(struct alq *alq) { - /* - * If we're already shuting down someone else will flush and close - * the vnode. - */ - if (ald_rem(alq) != 0) - return; - - /* - * Drain all pending IO. - */ - alq_shutdown(alq); - - mtx_destroy(&alq->aq_mtx); - free(alq->aq_first, M_ALD); - free(alq->aq_entbuf, M_ALD); - free(alq, M_ALD); + /* Only flush and destroy alq if not already shutting down. */ + if (ald_rem(alq) == 0) + alq_destroy(alq); } static int
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201011061117.oA6BHU1J029084>