diff options
Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c')
-rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c index 50f1bea..31d98cd 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dbuf.c @@ -768,13 +768,15 @@ dbuf_unoverride(dbuf_dirty_record_t *dr) ASSERT(db->db_data_pending != dr); /* free this block */ - if (!BP_IS_HOLE(bp)) { + if (!BP_IS_HOLE(bp) && !dr->dt.dl.dr_nopwrite) { spa_t *spa; DB_GET_SPA(&spa, db); zio_free(spa, txg, bp); } dr->dt.dl.dr_override_state = DR_NOT_OVERRIDDEN; + dr->dt.dl.dr_nopwrite = B_FALSE; + /* * Release the already-written buffer, so we leave it in * a consistent dirty state. Note that all callers are @@ -2189,6 +2191,13 @@ dmu_buf_freeable(dmu_buf_t *dbuf) return (res); } +blkptr_t * +dmu_buf_get_blkptr(dmu_buf_t *db) +{ + dmu_buf_impl_t *dbi = (dmu_buf_impl_t *)db; + return (dbi->db_blkptr); +} + static void dbuf_check_blkptr(dnode_t *dn, dmu_buf_impl_t *db) { @@ -2531,7 +2540,11 @@ dbuf_write_done(zio_t *zio, arc_buf_t *buf, void *vdb) ASSERT0(zio->io_error); ASSERT(db->db_blkptr == bp); - if (zio->io_flags & ZIO_FLAG_IO_REWRITE) { + /* + * For nopwrites and rewrites we ensure that the bp matches our + * original and bypass all the accounting. + */ + if (zio->io_flags & (ZIO_FLAG_IO_REWRITE | ZIO_FLAG_NOPWRITE)) { ASSERT(BP_EQUAL(bp, bp_orig)); } else { objset_t *os; @@ -2722,7 +2735,7 @@ dbuf_write(dbuf_dirty_record_t *dr, arc_buf_t *data, dmu_tx_t *tx) mutex_enter(&db->db_mtx); dr->dt.dl.dr_override_state = DR_NOT_OVERRIDDEN; zio_write_override(dr->dr_zio, &dr->dt.dl.dr_overridden_by, - dr->dt.dl.dr_copies); + dr->dt.dl.dr_copies, dr->dt.dl.dr_nopwrite); mutex_exit(&db->db_mtx); } else if (db->db_state == DB_NOFILL) { ASSERT(zp.zp_checksum == ZIO_CHECKSUM_OFF); |