RETURN(rc);
}
-/**
- * Pack SOM attributes into the reply.
- * Call under a DLM UPDATE lock.
- */
-static void mdt_pack_size2body(struct mdt_thread_info *info,
- struct mdt_object *mo)
-{
- struct mdt_body *b;
- struct md_attr *ma = &info->mti_attr;
-
- LASSERT(ma->ma_attr.la_valid & LA_MODE);
- b = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
-
- /* Check if Size-on-MDS is supported, if this is a regular file,
- * if SOM is enabled on the object and if SOM cache exists and valid.
- * Otherwise do not pack Size-on-MDS attributes to the reply. */
- if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
- !S_ISREG(ma->ma_attr.la_mode) ||
- !mdt_object_is_som_enabled(mo) ||
- !(ma->ma_valid & MA_SOM))
- return;
-
- b->mbo_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
- b->mbo_size = ma->ma_som->msd_size;
- b->mbo_blocks = ma->ma_som->msd_blocks;
-}
-
#ifdef CONFIG_FS_POSIX_ACL
/*
* Pack ACL data into the reply. UIDs/GIDs are mapped and filtered by nodemap.
GOTO(out, rc);
}
- if (need & MA_SOM && S_ISREG(mode)) {
- buf->lb_buf = info->mti_xattr_buf;
- buf->lb_len = sizeof(info->mti_xattr_buf);
- CLASSERT(sizeof(struct som_attrs) <=
- sizeof(info->mti_xattr_buf));
- rc2 = mo_xattr_get(info->mti_env, next, buf, XATTR_NAME_SOM);
- rc2 = lustre_buf2som(info->mti_xattr_buf, rc2, ma->ma_som);
- if (rc2 == 0)
- ma->ma_valid |= MA_SOM;
- else if (rc2 < 0 && rc2 != -ENODATA)
- GOTO(out, rc = rc2);
- }
-
if (need & MA_HSM && S_ISREG(mode)) {
buf->lb_buf = info->mti_xattr_buf;
buf->lb_len = sizeof(info->mti_xattr_buf);
ma->ma_need |= MA_LOV_DEF;
}
ma->ma_need |= ma_need;
- if (ma->ma_need & MA_SOM)
- ma->ma_som = &info->mti_u.som.data;
rc = mdt_attr_get_complex(info, o, ma);
if (unlikely(rc)) {
}
lock = ldlm_handle2lock(&lhc->mlh_reg_lh);
- /* Get MA_SOM attributes if update lock is given. */
- if (lock &&
- lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_UPDATE &&
- S_ISREG(lu_object_attr(&mdt_object_child(child)->mo_lu)))
- ma_need |= MA_SOM;
/* finally, we can get attr for child. */
mdt_set_capainfo(info, 1, child_fid, BYPASS_CAPA);
"Lock res_id: "DLDLMRES", fid: "DFID"\n",
PLDLMRES(lock->l_resource),
PFID(mdt_object_fid(child)));
- if (mdt_object_exists(child) && !mdt_object_remote(child))
- mdt_pack_size2body(info, child);
}
if (lock)
LDLM_LOCK_PUT(lock);
TGT_MDT_HDL(0 | HABEO_REFERO, MDS_STATFS, mdt_statfs),
TGT_MDT_HDL(0 | MUTABOR, MDS_REINT, mdt_reint),
TGT_MDT_HDL(HABEO_CORPUS, MDS_CLOSE, mdt_close),
-TGT_MDT_HDL(HABEO_CORPUS, MDS_DONE_WRITING,
- mdt_done_writing),
TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_READPAGE, mdt_readpage),
TGT_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_SYNC, mdt_sync),
TGT_MDT_HDL(0, MDS_QUOTACTL, mdt_quotactl),
m->mdt_max_mdsize = MAX_MD_SIZE; /* 4 stripes */
- m->mdt_som_conf = 0;
-
m->mdt_opts.mo_cos = MDT_COS_DEFAULT;
/* default is coordinator off, it is started through conf_param
obd->u.obt.obt_magic = OBT_MAGIC;
}
- spin_lock_init(&m->mdt_ioepoch_lock);
m->mdt_capa_timeout = CAPA_TIMEOUT;
m->mdt_capa_alg = CAPA_HMAC_ALG_SHA1;
m->mdt_ck_timeout = CAPA_KEY_TIMEOUT;
lu_object_init(o, h, d);
lu_object_add_top(h, o);
o->lo_ops = &mdt_obj_ops;
- mutex_init(&mo->mot_ioepoch_mutex);
+ spin_lock_init(&mo->mot_write_lock);
mutex_init(&mo->mot_lov_mutex);
init_rwsem(&mo->mot_open_sem);
RETURN(o);
}
static int mdt_object_print(const struct lu_env *env, void *cookie,
- lu_printer_t p, const struct lu_object *o)
+ lu_printer_t p, const struct lu_object *o)
{
- struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
- return (*p)(env, cookie, LUSTRE_MDT_NAME"-object@%p(ioepoch="LPU64" "
- "flags="LPX64", epochcount=%d, writecount=%d)",
- mdto, mdto->mot_ioepoch, mdto->mot_flags,
- mdto->mot_ioepoch_count, mdto->mot_writecount);
+ struct mdt_object *mdto = mdt_obj((struct lu_object *)o);
+
+ return (*p)(env, cookie,
+ LUSTRE_MDT_NAME"-object@%p(flags=%d, writecount=%d)",
+ mdto, mdto->mot_flags, mdto->mot_write_count);
}
static int mdt_prepare(const struct lu_env *env,
if (!mdt->mdt_opts.mo_user_xattr)
data->ocd_connect_flags &= ~OBD_CONNECT_XATTR;
- if (!mdt->mdt_som_conf)
- data->ocd_connect_flags &= ~OBD_CONNECT_SOM;
-
if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
data->ocd_brw_size = min(data->ocd_brw_size,
(__u32)MD_MAX_BRW_SIZE);
return -EBADE;
}
- if (mdt->mdt_som_conf &&
- !(data->ocd_connect_flags & (OBD_CONNECT_LIGHTWEIGHT |
- OBD_CONNECT_MDS_MDS |
- OBD_CONNECT_SOM))) {
- CWARN("%s: MDS has SOM enabled, but client does not support "
- "it\n", mdt_obd_name(mdt));
- return -EBADE;
- }
-
if (OCD_HAS_FLAG(data, PINGLESS)) {
if (ptlrpc_pinger_suppress_pings()) {
spin_lock(&exp->exp_obd->obd_dev_lock);
* archive request into a noop if it's not actually
* dirty.
*/
- if (mfd->mfd_mode & (FMODE_WRITE|MDS_FMODE_TRUNC))
+ if (mfd->mfd_mode & FMODE_WRITE)
rc = mdt_ctxt_add_dirty_flag(&env, info, mfd);
/* Don't unlink orphan on failover umount, LU-184 */
RETURN(rc);
}
-static int mdt_ioepoch_opened(struct mdt_object *mo)
-{
- return mo->mot_ioepoch_count;
-}
-
-int mdt_object_is_som_enabled(struct mdt_object *mo)
-{
- return !mo->mot_ioepoch;
-}
-
-/**
- * Re-enable Size-on-MDS.
- * Call under ->mot_ioepoch_mutex.
- */
-static void mdt_object_som_enable(struct mdt_object *mo, __u64 ioepoch)
-{
- if (ioepoch == mo->mot_ioepoch) {
- LASSERT(!mdt_ioepoch_opened(mo));
- mo->mot_ioepoch = 0;
- mo->mot_flags = 0;
- }
-}
-
-/**
- * Open the IOEpoch. It is allowed if @writecount is not negative.
- * The epoch and writecount handling is performed under the mot_ioepoch_mutex.
- */
-int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o,
- int created)
-{
- struct mdt_device *mdt = info->mti_mdt;
- int cancel = 0;
- int rc = 0;
- ENTRY;
-
- if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
- !S_ISREG(lu_object_attr(&o->mot_obj)))
- RETURN(0);
-
- mutex_lock(&o->mot_ioepoch_mutex);
- if (mdt_ioepoch_opened(o)) {
- /* Epoch continues even if there is no writers yet. */
- CDEBUG(D_INODE, "continue epoch "LPU64" for "DFID"\n",
- o->mot_ioepoch, PFID(mdt_object_fid(o)));
- } else {
- /* XXX: ->mdt_ioepoch is not initialized at the mount */
- spin_lock(&mdt->mdt_ioepoch_lock);
- if (mdt->mdt_ioepoch < info->mti_replayepoch)
- mdt->mdt_ioepoch = info->mti_replayepoch;
-
- if (info->mti_replayepoch)
- o->mot_ioepoch = info->mti_replayepoch;
- else if (++mdt->mdt_ioepoch == IOEPOCH_INVAL)
- o->mot_ioepoch = ++mdt->mdt_ioepoch;
- else
- o->mot_ioepoch = mdt->mdt_ioepoch;
-
- spin_unlock(&mdt->mdt_ioepoch_lock);
-
- CDEBUG(D_INODE, "starting epoch "LPU64" for "DFID"\n",
- o->mot_ioepoch, PFID(mdt_object_fid(o)));
- if (created)
- o->mot_flags |= MOF_SOM_CREATED;
- cancel = 1;
- }
- o->mot_ioepoch_count++;
- mutex_unlock(&o->mot_ioepoch_mutex);
-
- /* Cancel Size-on-MDS attributes cached on clients for the open case.
- * In the truncate case, see mdt_reint_setattr(). */
- if (cancel && (info->mti_rr.rr_fid1 != NULL)) {
- struct mdt_lock_handle *lh = &info->mti_lh[MDT_LH_CHILD];
- mdt_lock_reg_init(lh, LCK_EX);
- rc = mdt_object_lock(info, o, lh, MDS_INODELOCK_UPDATE,
- MDT_LOCAL_LOCK);
- if (rc == 0)
- mdt_object_unlock(info, o, lh, 1);
- }
- RETURN(rc);
-}
-
-/**
- * Update SOM on-disk attributes.
- * If enabling, write update inodes and lustre-ea with the proper IOEpoch,
- * mountid and attributes. If disabling, clean SOM xattr.
- * Call under ->mot_ioepoch_mutex.
- */
-static int mdt_som_attr_set(struct mdt_thread_info *info,
- struct mdt_object *obj, __u64 ioepoch, bool enable)
-{
- struct md_object *next = mdt_object_child(obj);
- int rc;
- ENTRY;
-
- CDEBUG(D_INODE, "Size-on-MDS attribute %s for epoch "LPU64
- " on "DFID".\n", enable ? "update" : "disabling",
- ioepoch, PFID(mdt_object_fid(obj)));
-
- if (enable) {
- struct lu_buf *buf = &info->mti_buf;
- struct som_attrs *attrs;
- struct md_attr *ma = &info->mti_attr;
- struct lu_attr *la = &ma->ma_attr;
- struct obd_device *obd = info->mti_mdt->mdt_lut.lut_obd;
-
- attrs = (struct som_attrs *)info->mti_xattr_buf;
- CLASSERT(sizeof(info->mti_xattr_buf) >= sizeof(*attrs));
-
- /* pack SOM attributes */
- memset(attrs, 0, sizeof(*attrs));
- attrs->som_ioepoch = ioepoch;
- attrs->som_mountid = obd->u.obt.obt_mount_count;
- if ((la->la_valid & LA_SIZE) != 0)
- attrs->som_size = la->la_size;
- if ((la->la_valid & LA_BLOCKS) != 0)
- attrs->som_blocks = la->la_blocks;
- lustre_som_swab(attrs);
-
- /* update SOM attributes */
- buf->lb_buf = attrs;
- buf->lb_len = sizeof(*attrs);
- rc = mo_xattr_set(info->mti_env, next, buf, XATTR_NAME_SOM, 0);
- } else {
- /* delete SOM attributes */
- rc = mo_xattr_del(info->mti_env, next, XATTR_NAME_SOM);
- }
-
- RETURN(rc);
-}
-
-/** Perform the eviction specific actions on ioepoch close. */
-static inline int mdt_ioepoch_close_on_eviction(struct mdt_thread_info *info,
- struct mdt_object *o)
-{
- int rc = 0;
-
- mutex_lock(&o->mot_ioepoch_mutex);
- CDEBUG(D_INODE, "Eviction. Closing IOepoch "LPU64" on "DFID". "
- "Count %d\n", o->mot_ioepoch, PFID(mdt_object_fid(o)),
- o->mot_ioepoch_count);
- o->mot_ioepoch_count--;
-
- /* If eviction occured set MOF_SOM_RECOV,
- * if no other epoch holders, disable SOM on disk. */
- o->mot_flags |= MOF_SOM_CHANGE | MOF_SOM_RECOV;
- if (!mdt_ioepoch_opened(o)) {
- rc = mdt_som_attr_set(info, o, o->mot_ioepoch, MDT_SOM_DISABLE);
- mdt_object_som_enable(o, o->mot_ioepoch);
- }
- mutex_unlock(&o->mot_ioepoch_mutex);
- RETURN(rc);
-}
-
-/**
- * Perform the replay specific actions on ioepoch close.
- * Skip SOM attribute update if obtained and just forget about the inode state
- * for the last ioepoch holder. The SOM cache is invalidated on MDS failure.
- */
-static inline int mdt_ioepoch_close_on_replay(struct mdt_thread_info *info,
- struct mdt_object *o)
-{
- int rc = MDT_IOEPOCH_CLOSED;
- ENTRY;
-
- mutex_lock(&o->mot_ioepoch_mutex);
- CDEBUG(D_INODE, "Replay. Closing epoch "LPU64" on "DFID". Count %d\n",
- o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
- o->mot_ioepoch_count--;
-
- /* Get an info from the replayed request if client is supposed
- * to send an Attibute Update, reconstruct @rc if so */
- if (info->mti_ioepoch->flags & MF_SOM_AU)
- rc = MDT_IOEPOCH_GETATTR;
-
- if (!mdt_ioepoch_opened(o))
- mdt_object_som_enable(o, info->mti_ioepoch->ioepoch);
- mutex_unlock(&o->mot_ioepoch_mutex);
-
- RETURN(rc);
-}
-
-/**
- * Regular file IOepoch close.
- * Closes the ioepoch, checks the object state, apply obtained attributes and
- * re-enable SOM on the object, if possible. Also checks if the recovery is
- * needed and packs OBD_MD_FLGETATTRLOCK flag into the reply to force the client
- * to obtain SOM attributes under the server-side OST locks.
- *
- * Return value:
- * MDT_IOEPOCH_CLOSED if ioepoch is closed.
- * MDT_IOEPOCH_GETATTR if ioepoch is closed but another SOM update is needed.
- */
-static inline int mdt_ioepoch_close_reg(struct mdt_thread_info *info,
- struct mdt_object *o)
-{
- struct md_attr *tmp_ma;
- struct lu_attr *la;
- int achange, opened;
- int recovery = 0;
- int rc = 0, ret = MDT_IOEPOCH_CLOSED;
- ENTRY;
-
- la = &info->mti_attr.ma_attr;
- achange = (info->mti_ioepoch->flags & MF_SOM_CHANGE);
-
- mutex_lock(&o->mot_ioepoch_mutex);
- o->mot_ioepoch_count--;
-
- tmp_ma = &info->mti_u.som.attr;
- tmp_ma->ma_lmm = info->mti_attr.ma_lmm;
- tmp_ma->ma_lmm_size = info->mti_attr.ma_lmm_size;
- tmp_ma->ma_som = &info->mti_u.som.data;
- tmp_ma->ma_need = MA_INODE | MA_LOV | MA_SOM;
- tmp_ma->ma_valid = 0;
- rc = mdt_attr_get_complex(info, o, tmp_ma);
- if (rc)
- GOTO(error_up, rc);
-
- /* Check the on-disk SOM state. */
- if (o->mot_flags & MOF_SOM_RECOV)
- recovery = 1;
- else if (!(o->mot_flags & MOF_SOM_CREATED) &&
- !(tmp_ma->ma_valid & MA_SOM))
- recovery = 1;
-
- CDEBUG(D_INODE, "Closing epoch "LPU64" on "DFID". Count %d\n",
- o->mot_ioepoch, PFID(mdt_object_fid(o)), o->mot_ioepoch_count);
-
- opened = mdt_ioepoch_opened(o);
- /**
- * If IOEpoch is not opened, check if a Size-on-MDS update is needed.
- * Skip the check for file with no LOV or for unlink files.
- */
- if (!opened && tmp_ma->ma_valid & MA_LOV &&
- !(tmp_ma->ma_valid & MA_INODE && tmp_ma->ma_attr.la_nlink == 0)) {
- if (recovery)
- /* If some previous writer was evicted, re-ask the
- * client for attributes. Even if attributes are
- * provided, we cannot believe in them.
- * Another use case is that there is no SOM cache on
- * disk -- first access with SOM or there was an MDS
- * failure. */
- ret = MDT_IOEPOCH_GETATTR;
- else if (o->mot_flags & MOF_SOM_CHANGE)
- /* Some previous writer changed the attribute.
- * Do not believe to the current Size-on-MDS
- * update, re-ask client. */
- ret = MDT_IOEPOCH_GETATTR;
- else if (!(la->la_valid & LA_SIZE) && achange)
- /* Attributes were changed by the last writer
- * only but no Size-on-MDS update is received.*/
- ret = MDT_IOEPOCH_GETATTR;
- }
-
- if (achange || ret == MDT_IOEPOCH_GETATTR)
- o->mot_flags |= MOF_SOM_CHANGE;
-
- /* If epoch ends and relable SOM attributes are obtained, update them.
- * Create SOM ea for new files even if there is no attributes obtained
- * (0-length file). */
- if (ret == MDT_IOEPOCH_CLOSED && !opened) {
- if (achange || o->mot_flags & MOF_SOM_CREATED) {
- LASSERT(achange || !(la->la_valid & LA_SIZE));
- rc = mdt_som_attr_set(info, o, o->mot_ioepoch,
- MDT_SOM_ENABLE);
- /* Avoid the following setattrs of these attributes,
- * e.g. for atime update. */
- info->mti_attr.ma_valid = 0;
- }
- mdt_object_som_enable(o, o->mot_ioepoch);
- }
-
- mutex_unlock(&o->mot_ioepoch_mutex);
- /* If recovery is needed, tell the client to perform GETATTR under
- * the lock. */
- if (ret == MDT_IOEPOCH_GETATTR && recovery) {
- struct mdt_body *rep;
- rep = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY);
- rep->mbo_valid |= OBD_MD_FLGETATTRLOCK;
- }
-
- RETURN(rc ? : ret);
-
-error_up:
- mutex_unlock(&o->mot_ioepoch_mutex);
- return rc;
-}
-
-/**
- * Close IOEpoch (opened file or MDS_FMODE_EPOCH state). It happens if:
- * - a client closes the IOEpoch;
- * - a client eviction occured.
- * Return values:
- * MDT_IOEPOCH_OPENED if the client does not close IOEpoch.
- * MDT_IOEPOCH_CLOSED if the client closes IOEpoch.
- * MDT_IOEPOCH_GETATTR if the client closes IOEpoch but another SOM attribute
- * update is needed.
- */
-static int mdt_ioepoch_close(struct mdt_thread_info *info, struct mdt_object *o)
+int mdt_write_read(struct mdt_object *o)
{
- struct ptlrpc_request *req = mdt_info_req(info);
+ int rc = 0;
ENTRY;
-
- if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
- !S_ISREG(lu_object_attr(&o->mot_obj)))
- RETURN(0);
-
- LASSERT(o->mot_ioepoch_count);
- LASSERT(info->mti_ioepoch == NULL ||
- info->mti_ioepoch->ioepoch == o->mot_ioepoch);
-
- /* IOEpoch is closed only if client tells about it or eviction occures.
- * In the replay case, always close the epoch. */
- if (req == NULL)
- RETURN(mdt_ioepoch_close_on_eviction(info, o));
- if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
- RETURN(mdt_ioepoch_close_on_replay(info, o));
- if (info->mti_ioepoch && (info->mti_ioepoch->flags & MF_EPOCH_CLOSE))
- RETURN(mdt_ioepoch_close_reg(info, o));
- /* IO epoch is not closed. */
- RETURN(MDT_IOEPOCH_OPENED);
+ spin_lock(&o->mot_write_lock);
+ rc = o->mot_write_count;
+ spin_unlock(&o->mot_write_lock);
+ RETURN(rc);
}
-/**
- * Close MDS_FMODE_SOM state, when IOEpoch is already closed and we are waiting
- * for attribute update. It happens if:
- * - SOM Attribute Update is obtained;
- * - the client failed to obtain it and informs MDS about it;
- * - a client eviction occured.
- * Apply obtained attributes for the 1st case, wipe out the on-disk SOM
- * cache otherwise.
- */
-static int mdt_som_au_close(struct mdt_thread_info *info, struct mdt_object *o)
+int mdt_write_get(struct mdt_object *o)
{
- struct ptlrpc_request *req = mdt_info_req(info);
- __u64 ioepoch = 0;
- int act = MDT_SOM_ENABLE;
- int rc = 0;
+ int rc = 0;
ENTRY;
+ spin_lock(&o->mot_write_lock);
+ if (o->mot_write_count < 0)
+ rc = -ETXTBSY;
+ else
+ o->mot_write_count++;
+ spin_unlock(&o->mot_write_lock);
- LASSERT(!req || info->mti_ioepoch);
- if (!(mdt_conn_flags(info) & OBD_CONNECT_SOM) ||
- !S_ISREG(lu_object_attr(&o->mot_obj)))
- RETURN(0);
-
- /* No size whereas MF_SOM_CHANGE is set means client failed to
- * obtain ost attributes, drop the SOM cache on disk if so. */
- if (!req ||
- (info->mti_ioepoch &&
- info->mti_ioepoch->flags & MF_SOM_CHANGE &&
- !(info->mti_attr.ma_attr.la_valid & LA_SIZE)))
- act = MDT_SOM_DISABLE;
-
- mutex_lock(&o->mot_ioepoch_mutex);
- /* Mark the object it is the recovery state if we failed to obtain
- * SOM attributes. */
- if (act == MDT_SOM_DISABLE)
- o->mot_flags |= MOF_SOM_RECOV;
-
- if (!mdt_ioepoch_opened(o)) {
- ioepoch = info->mti_ioepoch ?
- info->mti_ioepoch->ioepoch : o->mot_ioepoch;
-
- if (req != NULL
- && !(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY))
- rc = mdt_som_attr_set(info, o, ioepoch, act);
- mdt_object_som_enable(o, ioepoch);
- }
- mutex_unlock(&o->mot_ioepoch_mutex);
- RETURN(rc);
-}
-
-int mdt_write_read(struct mdt_object *o)
-{
- int rc = 0;
- ENTRY;
- mutex_lock(&o->mot_ioepoch_mutex);
- rc = o->mot_writecount;
- mutex_unlock(&o->mot_ioepoch_mutex);
- RETURN(rc);
-}
-
-int mdt_write_get(struct mdt_object *o)
-{
- int rc = 0;
- ENTRY;
- mutex_lock(&o->mot_ioepoch_mutex);
- if (o->mot_writecount < 0)
- rc = -ETXTBSY;
- else
- o->mot_writecount++;
- mutex_unlock(&o->mot_ioepoch_mutex);
- RETURN(rc);
+ RETURN(rc);
}
void mdt_write_put(struct mdt_object *o)
{
- ENTRY;
- mutex_lock(&o->mot_ioepoch_mutex);
- o->mot_writecount--;
- mutex_unlock(&o->mot_ioepoch_mutex);
- EXIT;
+ ENTRY;
+ spin_lock(&o->mot_write_lock);
+ o->mot_write_count--;
+ spin_unlock(&o->mot_write_lock);
+ EXIT;
}
static int mdt_write_deny(struct mdt_object *o)
{
- int rc = 0;
- ENTRY;
- mutex_lock(&o->mot_ioepoch_mutex);
- if (o->mot_writecount > 0)
- rc = -ETXTBSY;
- else
- o->mot_writecount--;
- mutex_unlock(&o->mot_ioepoch_mutex);
- RETURN(rc);
+ int rc = 0;
+ ENTRY;
+ spin_lock(&o->mot_write_lock);
+ if (o->mot_write_count > 0)
+ rc = -ETXTBSY;
+ else
+ o->mot_write_count--;
+ spin_unlock(&o->mot_write_lock);
+ RETURN(rc);
}
static void mdt_write_allow(struct mdt_object *o)
{
- ENTRY;
- mutex_lock(&o->mot_ioepoch_mutex);
- o->mot_writecount++;
- mutex_unlock(&o->mot_ioepoch_mutex);
- EXIT;
+ ENTRY;
+ spin_lock(&o->mot_write_lock);
+ o->mot_write_count++;
+ spin_unlock(&o->mot_write_lock);
+ EXIT;
}
/* there can be no real transaction so prepare the fake one */
RETURN_EXIT;
}
- if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
- lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
+ if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE) {
if (info->mti_transno != 0)
lcd->lcd_last_close_transno = info->mti_transno;
lcd->lcd_last_close_xid = req->rq_xid;
repbody->mbo_valid |= OBD_MD_FLDIREA | OBD_MD_MEA;
}
- if (flags & FMODE_WRITE) {
+ if (flags & FMODE_WRITE)
rc = mdt_write_get(o);
- if (rc == 0) {
- mdt_ioepoch_open(info, o, created);
- repbody->mbo_ioepoch = o->mot_ioepoch;
- }
- } else if (flags & MDS_FMODE_EXEC) {
+ else if (flags & MDS_FMODE_EXEC)
rc = mdt_write_deny(o);
- }
+
if (rc)
RETURN(rc);
err_out:
if (flags & FMODE_WRITE)
- /* XXX We also need to close io epoch here.
- * See LU-1220 - green */
mdt_write_put(o);
else if (flags & MDS_FMODE_EXEC)
mdt_write_allow(o);
/* Set file as released */
ma->ma_lmm->lmm_pattern |= cpu_to_le32(LOV_PATTERN_F_RELEASED);
- /* Hopefully it's not used in this call path */
- orp_ma = &info->mti_u.som.attr;
+ orp_ma = &info->mti_u.hsm.attr;
orp_ma->ma_attr.la_mode = S_IFREG | S_IWUSR;
orp_ma->ma_attr.la_uid = ma->ma_attr.la_uid;
orp_ma->ma_attr.la_gid = ma->ma_attr.la_gid;
return rc;
}
-#define MFD_CLOSED(mode) (((mode) & ~(MDS_FMODE_EPOCH | MDS_FMODE_SOM | \
- MDS_FMODE_TRUNC)) == MDS_FMODE_CLOSED)
+#define MFD_CLOSED(mode) ((mode) == MDS_FMODE_CLOSED)
static int mdt_mfd_closed(struct mdt_file_data *mfd)
{
struct mdt_object *o = mfd->mfd_object;
struct md_object *next = mdt_object_child(o);
struct md_attr *ma = &info->mti_attr;
- int ret = MDT_IOEPOCH_CLOSED;
int rc = 0;
__u64 mode;
ENTRY;
}
}
- if ((mode & FMODE_WRITE) || (mode & MDS_FMODE_TRUNC)) {
- mdt_write_put(o);
- ret = mdt_ioepoch_close(info, o);
- } else if (mode & MDS_FMODE_EXEC) {
- mdt_write_allow(o);
- } else if (mode & MDS_FMODE_EPOCH) {
- ret = mdt_ioepoch_close(info, o);
- } else if (mode & MDS_FMODE_SOM) {
- ret = mdt_som_au_close(info, o);
- }
+ if (mode & FMODE_WRITE)
+ mdt_write_put(o);
+ else if (mode & MDS_FMODE_EXEC)
+ mdt_write_allow(o);
/* Update atime on close only. */
if ((mode & MDS_FMODE_EXEC || mode & FMODE_READ || mode & FMODE_WRITE)
if (!MFD_CLOSED(mode))
rc = mo_close(info->mti_env, next, ma, mode);
- if (ret == MDT_IOEPOCH_GETATTR || ret == MDT_IOEPOCH_OPENED) {
- struct mdt_export_data *med;
-
- /* The IOepoch is still opened or SOM update is needed.
- * Put mfd back into the list. */
- LASSERT(mdt_conn_flags(info) & OBD_CONNECT_SOM);
- mdt_mfd_set_mode(mfd, ret == MDT_IOEPOCH_OPENED ?
- MDS_FMODE_EPOCH : MDS_FMODE_SOM);
-
- LASSERT(mdt_info_req(info));
- med = &mdt_info_req(info)->rq_export->exp_mdt_data;
- spin_lock(&med->med_open_lock);
- list_add(&mfd->mfd_list, &med->med_open_head);
- class_handle_hash_back(&mfd->mfd_handle);
- spin_unlock(&med->med_open_lock);
-
- if (ret == MDT_IOEPOCH_OPENED) {
- ret = 0;
- } else {
- ret = -EAGAIN;
- CDEBUG(D_INODE, "Size-on-MDS attribute update is "
- "needed on "DFID"\n", PFID(mdt_object_fid(o)));
- }
- } else {
- /* adjust open and lease count */
- if (mode & MDS_OPEN_LEASE) {
- LASSERT(atomic_read(&o->mot_lease_count) > 0);
- atomic_dec(&o->mot_lease_count);
- }
- LASSERT(atomic_read(&o->mot_open_count) > 0);
- atomic_dec(&o->mot_open_count);
-
- mdt_mfd_free(mfd);
- mdt_object_put(info->mti_env, o);
+ /* adjust open and lease count */
+ if (mode & MDS_OPEN_LEASE) {
+ LASSERT(atomic_read(&o->mot_lease_count) > 0);
+ atomic_dec(&o->mot_lease_count);
}
- RETURN(rc ? rc : ret);
+ LASSERT(atomic_read(&o->mot_open_count) > 0);
+ atomic_dec(&o->mot_open_count);
+ mdt_mfd_free(mfd);
+ mdt_object_put(info->mti_env, o);
+
+ RETURN(rc);
}
int mdt_close(struct tgt_session_info *tsi)
if (rc)
GOTO(out, rc = err_serious(rc));
- LASSERT(info->mti_ioepoch);
-
/* These fields are no longer used and are left for compatibility.
* size is always zero */
req_capsule_set_size(info->mti_pill, &RMF_MDT_MD, RCL_SERVER,
med = &req->rq_export->exp_mdt_data;
spin_lock(&med->med_open_lock);
- mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
- req_is_replay(req));
+ mfd = mdt_handle2mfd(med, &info->mti_close_handle, req_is_replay(req));
if (mdt_mfd_closed(mfd)) {
spin_unlock(&med->med_open_lock);
CDEBUG(D_INODE, "no handle for file close: fid = "DFID
": cookie = "LPX64"\n", PFID(info->mti_rr.rr_fid1),
- info->mti_ioepoch->handle.cookie);
+ info->mti_close_handle.cookie);
/** not serious error since bug 3633 */
rc = -ESTALE;
} else {
mdt_thread_info_fini(info);
RETURN(rc ? rc : ret);
}
-
-/**
- * DONE_WRITING rpc handler.
- *
- * As mfd is not kept after replayed CLOSE (see mdt_ioepoch_close_on_replay()),
- * only those DONE_WRITING rpc will be replayed which really wrote smth on disk,
- * and got a trasid. Waiting for such DONE_WRITING is not reliable, so just
- * skip attributes and reconstruct the reply here.
- */
-int mdt_done_writing(struct tgt_session_info *tsi)
-{
- struct ptlrpc_request *req = tgt_ses_req(tsi);
- struct mdt_thread_info *info = tsi2mdt_info(tsi);
- struct mdt_body *repbody = NULL;
- struct mdt_export_data *med;
- struct mdt_file_data *mfd;
- int rc;
- ENTRY;
-
- rc = req_capsule_server_pack(tsi->tsi_pill);
- if (rc)
- GOTO(out, rc = err_serious(rc));
-
- repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_MDT_BODY);
- repbody->mbo_eadatasize = 0;
- repbody->mbo_aclsize = 0;
-
- /* Done Writing may come with the Size-on-MDS update. Unpack it. */
- rc = mdt_close_unpack(info);
- if (rc)
- GOTO(out, rc = err_serious(rc));
-
- if (mdt_check_resent(info, mdt_reconstruct_generic, NULL)) {
- mdt_exit_ucred(info);
- GOTO(out, rc = lustre_msg_get_status(req->rq_repmsg));
- }
-
- med = &info->mti_exp->exp_mdt_data;
- spin_lock(&med->med_open_lock);
- mfd = mdt_handle2mfd(med, &info->mti_ioepoch->handle,
- req_is_replay(req));
- if (mfd == NULL) {
- spin_unlock(&med->med_open_lock);
- CDEBUG(D_INODE, "no handle for done write: fid = "DFID
- ": cookie = "LPX64" ioepoch = "LPU64"\n",
- PFID(info->mti_rr.rr_fid1),
- info->mti_ioepoch->handle.cookie,
- info->mti_ioepoch->ioepoch);
- /* If this is a replay, reconstruct the transno. */
- if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
- rc = info->mti_ioepoch->flags & MF_SOM_AU ?
- -EAGAIN : 0;
- mdt_empty_transno(info, rc);
- } else
- rc = -ESTALE;
- GOTO(error_ucred, rc);
- }
-
- LASSERT(mfd->mfd_mode == MDS_FMODE_EPOCH ||
- mfd->mfd_mode == MDS_FMODE_TRUNC);
- class_handle_unhash(&mfd->mfd_handle);
- list_del_init(&mfd->mfd_list);
- spin_unlock(&med->med_open_lock);
-
- /* Set EPOCH CLOSE flag if not set by client. */
- info->mti_ioepoch->flags |= MF_EPOCH_CLOSE;
- info->mti_attr.ma_valid = 0;
-
- info->mti_attr.ma_lmm_size = info->mti_mdt->mdt_max_mdsize;
- OBD_ALLOC_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
- if (info->mti_attr.ma_lmm == NULL)
- GOTO(error_ucred, rc = -ENOMEM);
-
- rc = mdt_mfd_close(info, mfd);
-
- OBD_FREE_LARGE(info->mti_attr.ma_lmm, info->mti_mdt->mdt_max_mdsize);
- mdt_empty_transno(info, rc);
-error_ucred:
- mdt_exit_ucred(info);
-out:
- mdt_thread_info_fini(info);
- RETURN(rc);
-}
git://git.whamcloud.com / fs / lustre-release.git / commitdiff