Date: Thu, 6 Jan 2011 09:34:22 +0000 (UTC) From: Martin Matuska <mm@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r217049 - in stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs: . sys Message-ID: <201101060934.p069YMpl009611@svn.freebsd.org>
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Author: mm Date: Thu Jan 6 09:34:22 2011 New Revision: 217049 URL: http://svn.freebsd.org/changeset/base/217049 Log: MFC r216919: MFp4 186485, 186859: Fix a race by defining two tasks in the zio structure as we can still be returning from issue task when interrupt task is used. Reviewed by: pav Approved by: pav Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h ============================================================================== --- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h Thu Jan 6 08:33:48 2011 (r217048) +++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h Thu Jan 6 09:34:22 2011 (r217049) @@ -340,7 +340,8 @@ struct zio { #ifdef _KERNEL /* FreeBSD only. */ - struct ostask io_task; + struct ostask io_task_issue; + struct ostask io_task_interrupt; #endif }; Modified: stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c ============================================================================== --- stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Thu Jan 6 08:33:48 2011 (r217048) +++ stable/8/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Thu Jan 6 09:34:22 2011 (r217049) @@ -947,6 +947,18 @@ zio_taskq_dispatch(zio_t *zio, enum zio_ { spa_t *spa = zio->io_spa; zio_type_t t = zio->io_type; +#ifdef _KERNEL + struct ostask *task; +#endif + + ASSERT(q == ZIO_TASKQ_ISSUE || q == ZIO_TASKQ_INTERRUPT); + +#ifdef _KERNEL + if (q == ZIO_TASKQ_ISSUE) + task = &zio->io_task_issue; + else /* if (q == ZIO_TASKQ_INTERRUPT) */ + task = &zio->io_task_interrupt; +#endif /* * If we're a config writer or a probe, the normal issue and @@ -970,8 +982,13 @@ zio_taskq_dispatch(zio_t *zio, enum zio_ q++; ASSERT3U(q, <, ZIO_TASKQ_TYPES); +#ifdef _KERNEL (void) taskq_dispatch_safe(spa->spa_zio_taskq[t][q], - (task_func_t *)zio_execute, zio, &zio->io_task); + (task_func_t *)zio_execute, zio, task); +#else + (void) taskq_dispatch(spa->spa_zio_taskq[t][q], + (task_func_t *)zio_execute, zio, TQ_SLEEP); +#endif } static boolean_t @@ -2300,9 +2317,16 @@ zio_done(zio_t *zio) * Reexecution is potentially a huge amount of work. * Hand it off to the otherwise-unused claim taskq. */ +#ifdef _KERNEL (void) taskq_dispatch_safe( spa->spa_zio_taskq[ZIO_TYPE_CLAIM][ZIO_TASKQ_ISSUE], - (task_func_t *)zio_reexecute, zio, &zio->io_task); + (task_func_t *)zio_reexecute, zio, + &zio->io_task_issue); +#else + (void) taskq_dispatch( + spa->spa_zio_taskq[ZIO_TYPE_CLAIM][ZIO_TASKQ_ISSUE], + (task_func_t *)zio_reexecute, zio, TQ_SLEEP); +#endif } return (ZIO_PIPELINE_STOP); }
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