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Thu, 1 Mar 2018 10:35:05 GMT (envelope-from avg@FreeBSD.org) Received: (from avg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w21AZ5eC079723; Thu, 1 Mar 2018 10:35:05 GMT (envelope-from avg@FreeBSD.org) Message-Id: <201803011035.w21AZ5eC079723@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: avg set sender to avg@FreeBSD.org using -f From: Andriy Gapon Date: Thu, 1 Mar 2018 10:35:05 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r330237 - in stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs: . sys X-SVN-Group: stable-11 X-SVN-Commit-Author: avg X-SVN-Commit-Paths: in stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs: . sys X-SVN-Commit-Revision: 330237 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Mar 2018 10:35:06 -0000 Author: avg Date: Thu Mar 1 10:35:05 2018 New Revision: 330237 URL: https://svnweb.freebsd.org/changeset/base/330237 Log: MFC r329314: MFV r329313: 8857 zio_remove_child() panic due to already destroyed parent zio PR: 223803 Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h Thu Mar 1 10:31:51 2018 (r330236) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h Thu Mar 1 10:35:05 2018 (r330237) @@ -200,6 +200,9 @@ enum zio_flag { (((zio)->io_flags & ZIO_FLAG_VDEV_INHERIT) | \ ZIO_FLAG_CANFAIL) +#define ZIO_CHILD_BIT(x) (1 << (x)) +#define ZIO_CHILD_BIT_IS_SET(val, x) ((val) & (1 << (x))) + enum zio_child { ZIO_CHILD_VDEV = 0, ZIO_CHILD_GANG, @@ -207,6 +210,14 @@ enum zio_child { ZIO_CHILD_LOGICAL, ZIO_CHILD_TYPES }; + +#define ZIO_CHILD_VDEV_BIT ZIO_CHILD_BIT(ZIO_CHILD_VDEV) +#define ZIO_CHILD_GANG_BIT ZIO_CHILD_BIT(ZIO_CHILD_GANG) +#define ZIO_CHILD_DDT_BIT ZIO_CHILD_BIT(ZIO_CHILD_DDT) +#define ZIO_CHILD_LOGICAL_BIT ZIO_CHILD_BIT(ZIO_CHILD_LOGICAL) +#define ZIO_CHILD_ALL_BITS \ + (ZIO_CHILD_VDEV_BIT | ZIO_CHILD_GANG_BIT | \ + ZIO_CHILD_DDT_BIT | ZIO_CHILD_LOGICAL_BIT) enum zio_wait_type { ZIO_WAIT_READY = 0, Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Thu Mar 1 10:31:51 2018 (r330236) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Thu Mar 1 10:35:05 2018 (r330237) @@ -512,21 +512,26 @@ zio_remove_child(zio_t *pio, zio_t *cio, zio_link_t *z } static boolean_t -zio_wait_for_children(zio_t *zio, enum zio_child child, enum zio_wait_type wait) +zio_wait_for_children(zio_t *zio, uint8_t childbits, enum zio_wait_type wait) { - uint64_t *countp = &zio->io_children[child][wait]; boolean_t waiting = B_FALSE; mutex_enter(&zio->io_lock); ASSERT(zio->io_stall == NULL); - if (*countp != 0) { - zio->io_stage >>= 1; - ASSERT3U(zio->io_stage, !=, ZIO_STAGE_OPEN); - zio->io_stall = countp; - waiting = B_TRUE; + for (int c = 0; c < ZIO_CHILD_TYPES; c++) { + if (!(ZIO_CHILD_BIT_IS_SET(childbits, c))) + continue; + + uint64_t *countp = &zio->io_children[c][wait]; + if (*countp != 0) { + zio->io_stage >>= 1; + ASSERT3U(zio->io_stage, !=, ZIO_STAGE_OPEN); + zio->io_stall = countp; + waiting = B_TRUE; + break; + } } mutex_exit(&zio->io_lock); - return (waiting); } @@ -1330,9 +1335,10 @@ zio_write_compress(zio_t *zio) * If our children haven't all reached the ready stage, * wait for them and then repeat this pipeline stage. */ - if (zio_wait_for_children(zio, ZIO_CHILD_GANG, ZIO_WAIT_READY) || - zio_wait_for_children(zio, ZIO_CHILD_LOGICAL, ZIO_WAIT_READY)) + if (zio_wait_for_children(zio, ZIO_CHILD_LOGICAL_BIT | + ZIO_CHILD_GANG_BIT, ZIO_WAIT_READY)) { return (ZIO_PIPELINE_STOP); + } if (!IO_IS_ALLOCATING(zio)) return (ZIO_PIPELINE_CONTINUE); @@ -2180,8 +2186,9 @@ zio_gang_issue(zio_t *zio) { blkptr_t *bp = zio->io_bp; - if (zio_wait_for_children(zio, ZIO_CHILD_GANG, ZIO_WAIT_DONE)) + if (zio_wait_for_children(zio, ZIO_CHILD_GANG_BIT, ZIO_WAIT_DONE)) { return (ZIO_PIPELINE_STOP); + } ASSERT(BP_IS_GANG(bp) && zio->io_gang_leader == zio); ASSERT(zio->io_child_type > ZIO_CHILD_GANG); @@ -2502,8 +2509,9 @@ zio_ddt_read_done(zio_t *zio) { blkptr_t *bp = zio->io_bp; - if (zio_wait_for_children(zio, ZIO_CHILD_DDT, ZIO_WAIT_DONE)) + if (zio_wait_for_children(zio, ZIO_CHILD_DDT_BIT, ZIO_WAIT_DONE)) { return (ZIO_PIPELINE_STOP); + } ASSERT(BP_GET_DEDUP(bp)); ASSERT(BP_GET_PSIZE(bp) == zio->io_size); @@ -3235,8 +3243,9 @@ zio_vdev_io_done(zio_t *zio) vdev_ops_t *ops = vd ? vd->vdev_ops : &vdev_mirror_ops; boolean_t unexpected_error = B_FALSE; - if (zio_wait_for_children(zio, ZIO_CHILD_VDEV, ZIO_WAIT_DONE)) + if (zio_wait_for_children(zio, ZIO_CHILD_VDEV_BIT, ZIO_WAIT_DONE)) { return (ZIO_PIPELINE_STOP); + } ASSERT(zio->io_type == ZIO_TYPE_READ || zio->io_type == ZIO_TYPE_WRITE || zio->io_type == ZIO_TYPE_FREE); @@ -3312,8 +3321,9 @@ zio_vdev_io_assess(zio_t *zio) { vdev_t *vd = zio->io_vd; - if (zio_wait_for_children(zio, ZIO_CHILD_VDEV, ZIO_WAIT_DONE)) + if (zio_wait_for_children(zio, ZIO_CHILD_VDEV_BIT, ZIO_WAIT_DONE)) { return (ZIO_PIPELINE_STOP); + } if (vd == NULL && !(zio->io_flags & ZIO_FLAG_CONFIG_WRITER)) spa_config_exit(zio->io_spa, SCL_ZIO, zio); @@ -3544,9 +3554,10 @@ zio_ready(zio_t *zio) zio_t *pio, *pio_next; zio_link_t *zl = NULL; - if (zio_wait_for_children(zio, ZIO_CHILD_GANG, ZIO_WAIT_READY) || - zio_wait_for_children(zio, ZIO_CHILD_DDT, ZIO_WAIT_READY)) + if (zio_wait_for_children(zio, ZIO_CHILD_GANG_BIT | ZIO_CHILD_DDT_BIT, + ZIO_WAIT_READY)) { return (ZIO_PIPELINE_STOP); + } if (zio->io_ready) { ASSERT(IO_IS_ALLOCATING(zio)); @@ -3686,11 +3697,9 @@ zio_done(zio_t *zio) * If our children haven't all completed, * wait for them and then repeat this pipeline stage. */ - if (zio_wait_for_children(zio, ZIO_CHILD_VDEV, ZIO_WAIT_DONE) || - zio_wait_for_children(zio, ZIO_CHILD_GANG, ZIO_WAIT_DONE) || - zio_wait_for_children(zio, ZIO_CHILD_DDT, ZIO_WAIT_DONE) || - zio_wait_for_children(zio, ZIO_CHILD_LOGICAL, ZIO_WAIT_DONE)) + if (zio_wait_for_children(zio, ZIO_CHILD_ALL_BITS, ZIO_WAIT_DONE)) { return (ZIO_PIPELINE_STOP); + } /* * If the allocation throttle is enabled, then update the accounting.