diff options
Diffstat (limited to 'usr/src/uts/common/fs/zfs/dmu_traverse.c')
| -rw-r--r-- | usr/src/uts/common/fs/zfs/dmu_traverse.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/usr/src/uts/common/fs/zfs/dmu_traverse.c b/usr/src/uts/common/fs/zfs/dmu_traverse.c index 3d2bc3e476..cdfb442f67 100644 --- a/usr/src/uts/common/fs/zfs/dmu_traverse.c +++ b/usr/src/uts/common/fs/zfs/dmu_traverse.c @@ -19,7 +19,7 @@ * CDDL HEADER END */ /* - * Copyright 2006 Sun Microsystems, Inc. All rights reserved. + * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ @@ -35,6 +35,7 @@ #include <sys/spa.h> #include <sys/zio.h> #include <sys/dmu_impl.h> +#include <sys/zvol.h> #define BP_SPAN_SHIFT(level, width) ((level) * (width)) @@ -261,6 +262,16 @@ advance_block(zseg_t *zseg, dnode_phys_t *dnp, int rc, int advance) return (EAGAIN); } +/* + * The traverse_callback function will call the function specified in th_func. + * In the event of an error the callee, specified by th_func, must return + * one of the following errors: + * + * EINTR - Indicates that the callee wants the traversal to + * abort immediately. + * ERESTART - The callee has acknowledged the error and would + * like to continue. + */ static int traverse_callback(traverse_handle_t *th, zseg_t *zseg, traverse_blk_cache_t *bc) { @@ -722,6 +733,24 @@ traverse_dsl_dataset(dsl_dataset_t *ds, uint64_t txg_start, int advance, } int +traverse_zvol(objset_t *os, int advance, blkptr_cb_t func, void *arg) +{ + spa_t *spa = dmu_objset_spa(os); + traverse_handle_t *th; + int err; + + th = traverse_init(spa, func, arg, advance, ZIO_FLAG_CANFAIL); + + traverse_add_dnode(th, 0, -1ULL, dmu_objset_id(os), ZVOL_OBJ); + + while ((err = traverse_more(th)) == EAGAIN) + continue; + + traverse_fini(th); + return (err); +} + +int traverse_more(traverse_handle_t *th) { zseg_t *zseg = list_head(&th->th_seglist); |