Date: Sat, 12 Jun 2010 11:21:37 +0000 (UTC) From: Martin Matuska <mm@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r209096 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201006121121.o5CBLb20083615@svn.freebsd.org>
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Author: mm Date: Sat Jun 12 11:21:37 2010 New Revision: 209096 URL: http://svn.freebsd.org/changeset/base/209096 Log: Fix vdev_probe() starvation brings txg train to a screeching halt OpenSolaris onnv-revision: 9722:e3866bad4e96 Obtained from: OpenSolaris (Bug ID 6844069) Approved by: pjd, delphij (mentor) MFC after: 3 days Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Sat Jun 12 11:20:50 2010 (r209095) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Sat Jun 12 11:21:37 2010 (r209096) @@ -894,11 +894,11 @@ zio_taskq_dispatch(zio_t *zio, enum zio_ zio_type_t t = zio->io_type; /* - * If we're a config writer, the normal issue and interrupt threads - * may all be blocked waiting for the config lock. In this case, - * select the otherwise-unused taskq for ZIO_TYPE_NULL. + * If we're a config writer or a probe, the normal issue and + * interrupt threads may all be blocked waiting for the config lock. + * In this case, select the otherwise-unused taskq for ZIO_TYPE_NULL. */ - if (zio->io_flags & ZIO_FLAG_CONFIG_WRITER) + if (zio->io_flags & (ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_PROBE)) t = ZIO_TYPE_NULL; /*
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