Date: Wed, 24 May 2017 21:49:22 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r318823 - in head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs: . sys Message-ID: <201705242149.v4OLnMTa036698@repo.freebsd.org>
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Author: avg Date: Wed May 24 21:49:21 2017 New Revision: 318823 URL: https://svnweb.freebsd.org/changeset/base/318823 Log: MFC r316914: 7801 add more by-dnode routines illumos/illumos-gate@b0c42cd4706ba01ce158bd2bb1004f7e59eca5fe https://github.com/illumos/illumos-gate/commit/b0c42cd4706ba01ce158bd2bb1004f7e59eca5fe https://www.illumos.org/issues/7801 Add *_by_dnode() routines for accessing objects given their dnode_t *, this is more efficient than accessing the object by (objset_t *, uint64_t object). This change converts some but not all of the existing consumers. As performance-sensitive code paths are discovered they should be converted to use these routines. Ported from: https://github.com/zfsonlinux/zfs/commit/0eef1bde31d67091d3deed23fe2394f5a8bf2276 Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com> Approved by: Robert Mustacchi <rm@joyent.com> Author: bzzz77 <bzzz.tomas@gmail.com> MFC after: 24 days Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_object.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_tx.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu_tx.h head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zap.h head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zap_micro.c Directory Properties: head/sys/cddl/contrib/opensolaris/ (props changed) Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c Wed May 24 21:45:52 2017 (r318822) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c Wed May 24 21:49:21 2017 (r318823) @@ -871,17 +871,12 @@ dmu_free_range(objset_t *os, uint64_t ob return (0); } -int -dmu_read(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, +static int +dmu_read_impl(dnode_t *dn, uint64_t offset, uint64_t size, void *buf, uint32_t flags) { - dnode_t *dn; dmu_buf_t **dbp; - int numbufs, err; - - err = dnode_hold(os, object, FTAG, &dn); - if (err) - return (err); + int numbufs, err = 0; /* * Deal with odd block sizes, where there can't be data past the first @@ -926,22 +921,37 @@ dmu_read(objset_t *os, uint64_t object, } dmu_buf_rele_array(dbp, numbufs, FTAG); } - dnode_rele(dn, FTAG); return (err); } -void -dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, - const void *buf, dmu_tx_t *tx) +int +dmu_read(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, + void *buf, uint32_t flags) { - dmu_buf_t **dbp; - int numbufs, i; + dnode_t *dn; + int err; - if (size == 0) - return; + err = dnode_hold(os, object, FTAG, &dn); + if (err != 0) + return (err); - VERIFY(0 == dmu_buf_hold_array(os, object, offset, size, - FALSE, FTAG, &numbufs, &dbp)); + err = dmu_read_impl(dn, offset, size, buf, flags); + dnode_rele(dn, FTAG); + return (err); +} + +int +dmu_read_by_dnode(dnode_t *dn, uint64_t offset, uint64_t size, void *buf, + uint32_t flags) +{ + return (dmu_read_impl(dn, offset, size, buf, flags)); +} + +static void +dmu_write_impl(dmu_buf_t **dbp, int numbufs, uint64_t offset, uint64_t size, + const void *buf, dmu_tx_t *tx) +{ + int i; for (i = 0; i < numbufs; i++) { int tocpy; @@ -969,6 +979,37 @@ dmu_write(objset_t *os, uint64_t object, size -= tocpy; buf = (char *)buf + tocpy; } +} + +void +dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, + const void *buf, dmu_tx_t *tx) +{ + dmu_buf_t **dbp; + int numbufs; + + if (size == 0) + return; + + VERIFY0(dmu_buf_hold_array(os, object, offset, size, + FALSE, FTAG, &numbufs, &dbp)); + dmu_write_impl(dbp, numbufs, offset, size, buf, tx); + dmu_buf_rele_array(dbp, numbufs, FTAG); +} + +void +dmu_write_by_dnode(dnode_t *dn, uint64_t offset, uint64_t size, + const void *buf, dmu_tx_t *tx) +{ + dmu_buf_t **dbp; + int numbufs; + + if (size == 0) + return; + + VERIFY0(dmu_buf_hold_array_by_dnode(dn, offset, size, + FALSE, FTAG, &numbufs, &dbp, DMU_READ_PREFETCH)); + dmu_write_impl(dbp, numbufs, offset, size, buf, tx); dmu_buf_rele_array(dbp, numbufs, FTAG); } Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_object.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_object.c Wed May 24 21:45:52 2017 (r318822) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_object.c Wed May 24 21:49:21 2017 (r318823) @@ -93,11 +93,11 @@ dmu_object_alloc(objset_t *os, dmu_objec } dnode_allocate(dn, ot, blocksize, 0, bonustype, bonuslen, tx); - dnode_rele(dn, FTAG); - mutex_exit(&os->os_obj_lock); - dmu_tx_add_new_object(tx, os, object); + dmu_tx_add_new_object(tx, dn); + dnode_rele(dn, FTAG); + return (object); } @@ -115,9 +115,10 @@ dmu_object_claim(objset_t *os, uint64_t if (err) return (err); dnode_allocate(dn, ot, blocksize, 0, bonustype, bonuslen, tx); + dmu_tx_add_new_object(tx, dn); + dnode_rele(dn, FTAG); - dmu_tx_add_new_object(tx, os, object); return (0); } Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_tx.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_tx.c Wed May 24 21:45:52 2017 (r318822) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_tx.c Wed May 24 21:49:21 2017 (r318823) @@ -93,21 +93,14 @@ dmu_tx_private_ok(dmu_tx_t *tx) } static dmu_tx_hold_t * -dmu_tx_hold_object_impl(dmu_tx_t *tx, objset_t *os, uint64_t object, - enum dmu_tx_hold_type type, uint64_t arg1, uint64_t arg2) +dmu_tx_hold_dnode_impl(dmu_tx_t *tx, dnode_t *dn, enum dmu_tx_hold_type type, + uint64_t arg1, uint64_t arg2) { dmu_tx_hold_t *txh; - dnode_t *dn = NULL; - int err; - - if (object != DMU_NEW_OBJECT) { - err = dnode_hold(os, object, tx, &dn); - if (err) { - tx->tx_err = err; - return (NULL); - } - if (err == 0 && tx->tx_txg != 0) { + if (dn != NULL) { + (void) refcount_add(&dn->dn_holds, tx); + if (tx->tx_txg != 0) { mutex_enter(&dn->dn_mtx); /* * dn->dn_assigned_txg == tx->tx_txg doesn't pose a @@ -134,17 +127,36 @@ dmu_tx_hold_object_impl(dmu_tx_t *tx, ob return (txh); } +static dmu_tx_hold_t * +dmu_tx_hold_object_impl(dmu_tx_t *tx, objset_t *os, uint64_t object, + enum dmu_tx_hold_type type, uint64_t arg1, uint64_t arg2) +{ + dnode_t *dn = NULL; + dmu_tx_hold_t *txh; + int err; + + if (object != DMU_NEW_OBJECT) { + err = dnode_hold(os, object, FTAG, &dn); + if (err != 0) { + tx->tx_err = err; + return (NULL); + } + } + txh = dmu_tx_hold_dnode_impl(tx, dn, type, arg1, arg2); + if (dn != NULL) + dnode_rele(dn, FTAG); + return (txh); +} + void -dmu_tx_add_new_object(dmu_tx_t *tx, objset_t *os, uint64_t object) +dmu_tx_add_new_object(dmu_tx_t *tx, dnode_t *dn) { /* * If we're syncing, they can manipulate any object anyhow, and * the hold on the dnode_t can cause problems. */ - if (!dmu_tx_is_syncing(tx)) { - (void) dmu_tx_hold_object_impl(tx, os, - object, THT_NEWOBJECT, 0, 0); - } + if (!dmu_tx_is_syncing(tx)) + (void) dmu_tx_hold_dnode_impl(tx, dn, THT_NEWOBJECT, 0, 0); } /* @@ -282,11 +294,26 @@ dmu_tx_hold_write(dmu_tx_t *tx, uint64_t txh = dmu_tx_hold_object_impl(tx, tx->tx_objset, object, THT_WRITE, off, len); - if (txh == NULL) - return; + if (txh != NULL) { + dmu_tx_count_write(txh, off, len); + dmu_tx_count_dnode(txh); + } +} - dmu_tx_count_write(txh, off, len); - dmu_tx_count_dnode(txh); +void +dmu_tx_hold_write_by_dnode(dmu_tx_t *tx, dnode_t *dn, uint64_t off, int len) +{ + dmu_tx_hold_t *txh; + + ASSERT0(tx->tx_txg); + ASSERT3U(len, <=, DMU_MAX_ACCESS); + ASSERT(len == 0 || UINT64_MAX - off >= len - 1); + + txh = dmu_tx_hold_dnode_impl(tx, dn, THT_WRITE, off, len); + if (txh != NULL) { + dmu_tx_count_write(txh, off, len); + dmu_tx_count_dnode(txh); + } } /* @@ -303,18 +330,18 @@ dmu_tx_mark_netfree(dmu_tx_t *tx) tx->tx_netfree = B_TRUE; } -void -dmu_tx_hold_free(dmu_tx_t *tx, uint64_t object, uint64_t off, uint64_t len) +static void +dmu_tx_hold_free_impl(dmu_tx_hold_t *txh, uint64_t off, uint64_t len) { + dmu_tx_t *tx; + dnode_t *dn; int err; + zio_t *zio; + tx = txh->txh_tx; ASSERT(tx->tx_txg == 0); - dmu_tx_hold_t *txh = dmu_tx_hold_object_impl(tx, tx->tx_objset, - object, THT_FREE, off, len); - if (txh == NULL) - return; - dnode_t *dn = txh->txh_dnode; + dn = txh->txh_dnode; dmu_tx_count_dnode(txh); if (off >= (dn->dn_maxblkid + 1) * dn->dn_datablksz) @@ -396,17 +423,36 @@ dmu_tx_hold_free(dmu_tx_t *tx, uint64_t } void -dmu_tx_hold_zap(dmu_tx_t *tx, uint64_t object, int add, const char *name) +dmu_tx_hold_free(dmu_tx_t *tx, uint64_t object, uint64_t off, uint64_t len) +{ + dmu_tx_hold_t *txh; + + txh = dmu_tx_hold_object_impl(tx, tx->tx_objset, + object, THT_FREE, off, len); + if (txh != NULL) + (void) dmu_tx_hold_free_impl(txh, off, len); +} + +void +dmu_tx_hold_free_by_dnode(dmu_tx_t *tx, dnode_t *dn, uint64_t off, uint64_t len) +{ + dmu_tx_hold_t *txh; + + txh = dmu_tx_hold_dnode_impl(tx, dn, THT_FREE, off, len); + if (txh != NULL) + (void) dmu_tx_hold_free_impl(txh, off, len); +} + +static void +dmu_tx_hold_zap_impl(dmu_tx_hold_t *txh, int add, const char *name) { + dmu_tx_t *tx = txh->txh_tx; + dnode_t *dn; int err; ASSERT(tx->tx_txg == 0); - dmu_tx_hold_t *txh = dmu_tx_hold_object_impl(tx, tx->tx_objset, - object, THT_ZAP, add, (uintptr_t)name); - if (txh == NULL) - return; - dnode_t *dn = txh->txh_dnode; + dn = txh->txh_dnode; dmu_tx_count_dnode(txh); @@ -450,6 +496,32 @@ dmu_tx_hold_zap(dmu_tx_t *tx, uint64_t o } void +dmu_tx_hold_zap(dmu_tx_t *tx, uint64_t object, int add, const char *name) +{ + dmu_tx_hold_t *txh; + + ASSERT0(tx->tx_txg); + + txh = dmu_tx_hold_object_impl(tx, tx->tx_objset, + object, THT_ZAP, add, (uintptr_t)name); + if (txh != NULL) + dmu_tx_hold_zap_impl(txh, add, name); +} + +void +dmu_tx_hold_zap_by_dnode(dmu_tx_t *tx, dnode_t *dn, int add, const char *name) +{ + dmu_tx_hold_t *txh; + + ASSERT0(tx->tx_txg); + ASSERT(dn != NULL); + + txh = dmu_tx_hold_dnode_impl(tx, dn, THT_ZAP, add, (uintptr_t)name); + if (txh != NULL) + dmu_tx_hold_zap_impl(txh, add, name); +} + +void dmu_tx_hold_bonus(dmu_tx_t *tx, uint64_t object) { dmu_tx_hold_t *txh; @@ -463,6 +535,18 @@ dmu_tx_hold_bonus(dmu_tx_t *tx, uint64_t } void +dmu_tx_hold_bonus_by_dnode(dmu_tx_t *tx, dnode_t *dn) +{ + dmu_tx_hold_t *txh; + + ASSERT0(tx->tx_txg); + + txh = dmu_tx_hold_dnode_impl(tx, dn, THT_BONUS, 0, 0); + if (txh) + dmu_tx_count_dnode(txh); +} + +void dmu_tx_hold_space(dmu_tx_t *tx, uint64_t space) { dmu_tx_hold_t *txh; Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h Wed May 24 21:45:52 2017 (r318822) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu.h Wed May 24 21:49:21 2017 (r318823) @@ -669,10 +669,17 @@ void dmu_buf_will_dirty(dmu_buf_t *db, d dmu_tx_t *dmu_tx_create(objset_t *os); void dmu_tx_hold_write(dmu_tx_t *tx, uint64_t object, uint64_t off, int len); +void dmu_tx_hold_write_by_dnode(dmu_tx_t *tx, dnode_t *dn, uint64_t off, + int len); void dmu_tx_hold_free(dmu_tx_t *tx, uint64_t object, uint64_t off, uint64_t len); +void dmu_tx_hold_free_by_dnode(dmu_tx_t *tx, dnode_t *dn, uint64_t off, + uint64_t len); void dmu_tx_hold_zap(dmu_tx_t *tx, uint64_t object, int add, const char *name); +void dmu_tx_hold_zap_by_dnode(dmu_tx_t *tx, dnode_t *dn, int add, + const char *name); void dmu_tx_hold_bonus(dmu_tx_t *tx, uint64_t object); +void dmu_tx_hold_bonus_by_dnode(dmu_tx_t *tx, dnode_t *dn); void dmu_tx_hold_spill(dmu_tx_t *tx, uint64_t object); void dmu_tx_hold_sa(dmu_tx_t *tx, struct sa_handle *hdl, boolean_t may_grow); void dmu_tx_hold_sa_create(dmu_tx_t *tx, int total_size); @@ -722,8 +729,12 @@ int dmu_free_long_object(objset_t *os, u #define DMU_READ_NO_PREFETCH 1 /* don't prefetch */ int dmu_read(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, void *buf, uint32_t flags); +int dmu_read_by_dnode(dnode_t *dn, uint64_t offset, uint64_t size, void *buf, + uint32_t flags); void dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, const void *buf, dmu_tx_t *tx); +void dmu_write_by_dnode(dnode_t *dn, uint64_t offset, uint64_t size, + const void *buf, dmu_tx_t *tx); void dmu_prealloc(objset_t *os, uint64_t object, uint64_t offset, uint64_t size, dmu_tx_t *tx); int dmu_read_uio(objset_t *os, uint64_t object, struct uio *uio, uint64_t size); Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu_tx.h ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu_tx.h Wed May 24 21:45:52 2017 (r318822) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dmu_tx.h Wed May 24 21:49:21 2017 (r318823) @@ -135,7 +135,7 @@ extern dmu_tx_t *dmu_tx_create_assigned( dmu_tx_t *dmu_tx_create_dd(dsl_dir_t *dd); int dmu_tx_is_syncing(dmu_tx_t *tx); int dmu_tx_private_ok(dmu_tx_t *tx); -void dmu_tx_add_new_object(dmu_tx_t *tx, objset_t *os, uint64_t object); +void dmu_tx_add_new_object(dmu_tx_t *tx, dnode_t *dn); void dmu_tx_dirty_buf(dmu_tx_t *tx, struct dmu_buf_impl *db); void dmu_tx_hold_space(dmu_tx_t *tx, uint64_t space); Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zap.h ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zap.h Wed May 24 21:45:52 2017 (r318822) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zap.h Wed May 24 21:49:21 2017 (r318823) @@ -220,6 +220,9 @@ int zap_count_write_by_dnode(dnode_t *dn int zap_add(objset_t *ds, uint64_t zapobj, const char *key, int integer_size, uint64_t num_integers, const void *val, dmu_tx_t *tx); +int zap_add_by_dnode(dnode_t *dn, const char *key, + int integer_size, uint64_t num_integers, + const void *val, dmu_tx_t *tx); int zap_add_uint64(objset_t *ds, uint64_t zapobj, const uint64_t *key, int key_numints, int integer_size, uint64_t num_integers, const void *val, dmu_tx_t *tx); @@ -259,6 +262,7 @@ int zap_length_uint64(objset_t *os, uint int zap_remove(objset_t *ds, uint64_t zapobj, const char *name, dmu_tx_t *tx); int zap_remove_norm(objset_t *ds, uint64_t zapobj, const char *name, matchtype_t mt, dmu_tx_t *tx); +int zap_remove_by_dnode(dnode_t *dn, const char *name, dmu_tx_t *tx); int zap_remove_uint64(objset_t *os, uint64_t zapobj, const uint64_t *key, int key_numints, dmu_tx_t *tx); Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zap_micro.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zap_micro.c Wed May 24 21:45:52 2017 (r318822) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zap_micro.c Wed May 24 21:49:21 2017 (r318823) @@ -1120,34 +1120,30 @@ again: ASSERT(!"out of entries!"); } -int -zap_add(objset_t *os, uint64_t zapobj, const char *key, +static int +zap_add_impl(zap_t *zap, const char *key, int integer_size, uint64_t num_integers, - const void *val, dmu_tx_t *tx) + const void *val, dmu_tx_t *tx, void *tag) { - zap_t *zap; - int err; + int err = 0; mzap_ent_t *mze; const uint64_t *intval = val; zap_name_t *zn; - err = zap_lockdir(os, zapobj, tx, RW_WRITER, TRUE, TRUE, FTAG, &zap); - if (err) - return (err); zn = zap_name_alloc(zap, key, 0); if (zn == NULL) { - zap_unlockdir(zap, FTAG); + zap_unlockdir(zap, tag); return (SET_ERROR(ENOTSUP)); } if (!zap->zap_ismicro) { - err = fzap_add(zn, integer_size, num_integers, val, FTAG, tx); + err = fzap_add(zn, integer_size, num_integers, val, tag, tx); zap = zn->zn_zap; /* fzap_add() may change zap */ } else if (integer_size != 8 || num_integers != 1 || strlen(key) >= MZAP_NAME_LEN) { - err = mzap_upgrade(&zn->zn_zap, FTAG, tx, 0); + err = mzap_upgrade(&zn->zn_zap, tag, tx, 0); if (err == 0) { err = fzap_add(zn, integer_size, num_integers, val, - FTAG, tx); + tag, tx); } zap = zn->zn_zap; /* fzap_add() may change zap */ } else { @@ -1161,7 +1157,39 @@ zap_add(objset_t *os, uint64_t zapobj, c ASSERT(zap == zn->zn_zap); zap_name_free(zn); if (zap != NULL) /* may be NULL if fzap_add() failed */ - zap_unlockdir(zap, FTAG); + zap_unlockdir(zap, tag); + return (err); +} + +int +zap_add(objset_t *os, uint64_t zapobj, const char *key, + int integer_size, uint64_t num_integers, + const void *val, dmu_tx_t *tx) +{ + zap_t *zap; + int err; + + err = zap_lockdir(os, zapobj, tx, RW_WRITER, TRUE, TRUE, FTAG, &zap); + if (err != 0) + return (err); + err = zap_add_impl(zap, key, integer_size, num_integers, val, tx, FTAG); + /* zap_add_impl() calls zap_unlockdir() */ + return (err); +} + +int +zap_add_by_dnode(dnode_t *dn, const char *key, + int integer_size, uint64_t num_integers, + const void *val, dmu_tx_t *tx) +{ + zap_t *zap; + int err; + + err = zap_lockdir_by_dnode(dn, tx, RW_WRITER, TRUE, TRUE, FTAG, &zap); + if (err != 0) + return (err); + err = zap_add_impl(zap, key, integer_size, num_integers, val, tx, FTAG); + /* zap_add_impl() calls zap_unlockdir() */ return (err); } @@ -1279,23 +1307,17 @@ zap_remove(objset_t *os, uint64_t zapobj return (zap_remove_norm(os, zapobj, name, 0, tx)); } -int -zap_remove_norm(objset_t *os, uint64_t zapobj, const char *name, +static int +zap_remove_impl(zap_t *zap, const char *name, matchtype_t mt, dmu_tx_t *tx) { - zap_t *zap; - int err; mzap_ent_t *mze; zap_name_t *zn; + int err = 0; - err = zap_lockdir(os, zapobj, tx, RW_WRITER, TRUE, FALSE, FTAG, &zap); - if (err) - return (err); zn = zap_name_alloc(zap, name, mt); - if (zn == NULL) { - zap_unlockdir(zap, FTAG); + if (zn == NULL) return (SET_ERROR(ENOTSUP)); - } if (!zap->zap_ismicro) { err = fzap_remove(zn, tx); } else { @@ -1310,6 +1332,34 @@ zap_remove_norm(objset_t *os, uint64_t z } } zap_name_free(zn); + return (err); +} + +int +zap_remove_norm(objset_t *os, uint64_t zapobj, const char *name, + matchtype_t mt, dmu_tx_t *tx) +{ + zap_t *zap; + int err; + + err = zap_lockdir(os, zapobj, tx, RW_WRITER, TRUE, FALSE, FTAG, &zap); + if (err) + return (err); + err = zap_remove_impl(zap, name, mt, tx); + zap_unlockdir(zap, FTAG); + return (err); +} + +int +zap_remove_by_dnode(dnode_t *dn, const char *name, dmu_tx_t *tx) +{ + zap_t *zap; + int err; + + err = zap_lockdir_by_dnode(dn, tx, RW_WRITER, TRUE, FALSE, FTAG, &zap); + if (err) + return (err); + err = zap_remove_impl(zap, name, 0, tx); zap_unlockdir(zap, FTAG); return (err); }
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