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author | mm <mm@FreeBSD.org> | 2013-02-11 12:42:11 +0000 |
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committer | mm <mm@FreeBSD.org> | 2013-02-11 12:42:11 +0000 |
commit | 22ab64ccb2461dded21f4c8a09029daf1027c2f8 (patch) | |
tree | 2649bc26255ec262bbcca7821c20460caff57c0d /sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c | |
parent | 3647f040d3f9d32573905dc01b99edcd0493cbf7 (diff) | |
download | FreeBSD-src-22ab64ccb2461dded21f4c8a09029daf1027c2f8.zip FreeBSD-src-22ab64ccb2461dded21f4c8a09029daf1027c2f8.tar.gz |
MFV r246392:
Import vendor ZFS bugfix fixing a possible deadlock in arc_read().
Illumos ZFS issues:
3498 panic in arc_read(): !refcount_is_zero(&pbuf->b_hdr->b_refcnt)
References:
https://www.illumos.org/issues/3498
MFC after: 2 weeks
Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c')
-rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c index f4f4e1a..06e08c9 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_objset.c @@ -276,12 +276,7 @@ dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp, aflags |= ARC_L2CACHE; dprintf_bp(os->os_rootbp, "reading %s", ""); - /* - * XXX when bprewrite scrub can change the bp, - * and this is called from dmu_objset_open_ds_os, the bp - * could change, and we'll need a lock. - */ - err = dsl_read_nolock(NULL, spa, os->os_rootbp, + err = arc_read(NULL, spa, os->os_rootbp, arc_getbuf_func, &os->os_phys_buf, ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL, &aflags, &zb); if (err) { @@ -1124,8 +1119,7 @@ dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx) SET_BOOKMARK(&zb, os->os_dsl_dataset ? os->os_dsl_dataset->ds_object : DMU_META_OBJSET, ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); - VERIFY3U(0, ==, arc_release_bp(os->os_phys_buf, &os->os_phys_buf, - os->os_rootbp, os->os_spa, &zb)); + arc_release(os->os_phys_buf, &os->os_phys_buf); dmu_write_policy(os, NULL, 0, 0, &zp); @@ -1764,7 +1758,7 @@ dmu_objset_prefetch(const char *name, void *arg) SET_BOOKMARK(&zb, ds->ds_object, ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID); - (void) dsl_read_nolock(NULL, dsl_dataset_get_spa(ds), + (void) arc_read(NULL, dsl_dataset_get_spa(ds), &ds->ds_phys->ds_bp, NULL, NULL, ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE, |