}
EXPORT_SYMBOL(it_clear_disposition);
-static int it_to_lock_mode(struct lookup_intent *it)
-{
- /* CREAT needs to be tested before open (both could be set) */
- if (it->it_op & IT_CREAT)
- return LCK_CW;
- else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_LOOKUP))
- return LCK_CR;
-
- LBUG();
- RETURN(-EINVAL);
-}
-
int it_open_error(int phase, struct lookup_intent *it)
{
if (it_disposition(it, DISP_OPEN_OPEN)) {
* but this is incredibly unlikely, and questionable whether the client
* could do MDS recovery under OOM anyways... */
static void mdc_realloc_openmsg(struct ptlrpc_request *req,
- struct mds_body *body, int size[6])
+ struct mds_body *body)
{
- int new_size, old_size;
+ int old_len, new_size, old_size;
+ struct lustre_msg *old_msg = req->rq_reqmsg;
struct lustre_msg *new_msg;
- /* save old size */
- old_size = lustre_msg_size(lustre_request_magic(req), 6, size);
+ old_len = lustre_msg_buflen(old_msg, DLM_INTENT_REC_OFF + 2);
+ old_size = lustre_packed_msg_size(old_msg);
+ lustre_msg_set_buflen(old_msg, DLM_INTENT_REC_OFF + 2,
+ body->eadatasize);
+ new_size = lustre_packed_msg_size(old_msg);
- size[DLM_INTENT_REC_OFF + 2] = body->eadatasize;
- new_size = lustre_msg_size(lustre_request_magic(req), 6, size);
OBD_ALLOC(new_msg, new_size);
if (new_msg != NULL) {
- struct lustre_msg *old_msg = req->rq_reqmsg;
-
DEBUG_REQ(D_INFO, req, "replace reqmsg for larger EA %u\n",
body->eadatasize);
memcpy(new_msg, old_msg, old_size);
- lustre_msg_set_buflen(new_msg, DLM_INTENT_REC_OFF + 2,
- body->eadatasize);
spin_lock(&req->rq_lock);
req->rq_reqmsg = new_msg;
OBD_FREE(old_msg, old_size);
} else {
+ lustre_msg_set_buflen(old_msg, DLM_INTENT_REC_OFF + 2, old_len);
body->valid &= ~OBD_MD_FLEASIZE;
body->eadatasize = 0;
}
}
-/* We always reserve enough space in the reply packet for a stripe MD, because
- * we don't know in advance the file type. */
-int mdc_enqueue(struct obd_export *exp,
- int lock_type,
- struct lookup_intent *it,
- int lock_mode,
- struct mdc_op_data *data,
- struct lustre_handle *lockh,
- void *lmm,
- int lmmsize,
- ldlm_completion_callback cb_completion,
- ldlm_blocking_callback cb_blocking,
- void *cb_data, int extra_lock_flags)
+static struct ptlrpc_request *mdc_intent_open_pack(struct obd_export *exp,
+ struct lookup_intent *it,
+ struct mdc_op_data *data,
+ void *lmm, int lmmsize)
{
struct ptlrpc_request *req;
- struct obd_device *obddev = class_exp2obd(exp);
- struct ldlm_res_id res_id =
- { .name = {data->fid1.id, data->fid1.generation} };
- ldlm_policy_data_t policy = { .l_inodebits = { MDS_INODELOCK_LOOKUP } };
- struct ldlm_request *lockreq;
struct ldlm_intent *lit;
- struct ldlm_reply *lockrep;
+ struct obd_device *obddev = class_exp2obd(exp);
int size[7] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
- [DLM_LOCKREQ_OFF] = sizeof(*lockreq),
- [DLM_INTENT_IT_OFF] = sizeof(*lit) };
+ [DLM_LOCKREQ_OFF] = sizeof(struct ldlm_request),
+ [DLM_INTENT_IT_OFF] = sizeof(*lit),
+ [DLM_INTENT_REC_OFF] = sizeof(struct mds_rec_create),
+ [DLM_INTENT_REC_OFF+1]= data->namelen + 1,
+ /* As an optimization, we allocate an RPC request buffer
+ * for at least a default-sized LOV EA even if we aren't
+ * sending one. We grow the whole request to the next
+ * power-of-two size since we get that much from a slab
+ * allocation anyways. This avoids an allocation below
+ * in the common case where we need to save a
+ * default-sized LOV EA for open replay. */
+ [DLM_INTENT_REC_OFF+2]= max(lmmsize,
+ obddev->u.cli.cl_default_mds_easize) };
int repsize[5] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
- [DLM_LOCKREPLY_OFF] = sizeof(*lockrep),
+ [DLM_LOCKREPLY_OFF] = sizeof(struct ldlm_reply),
[DLM_REPLY_REC_OFF] = sizeof(struct mds_body),
[DLM_REPLY_REC_OFF+1] = obddev->u.cli.
- cl_max_mds_easize };
- int flags = extra_lock_flags | LDLM_FL_HAS_INTENT;
- int repbufcnt = 4, rc;
- void *eadata;
- ENTRY;
-
- LASSERTF(lock_type == LDLM_IBITS, "lock type %d\n", lock_type);
-// LDLM_DEBUG_NOLOCK("mdsintent=%s,name=%s,dir=%lu",
-// ldlm_it2str(it->it_op), it_name, it_inode->i_ino);
-
- if (it->it_op & IT_OPEN) {
- it->it_create_mode |= S_IFREG;
-
- size[DLM_INTENT_REC_OFF] = sizeof(struct mds_rec_create);
- size[DLM_INTENT_REC_OFF + 1] = data->namelen + 1;
- /* As an optimization, we allocate an RPC request buffer for
- * at least a default-sized LOV EA even if we aren't sending
- * one. We grow the whole request to the next power-of-two
- * size since we get that much from a slab allocation anyways.
- * This avoids an allocation below in the common case where
- * we need to save a default-sized LOV EA for open replay. */
- size[DLM_INTENT_REC_OFF + 2] = max(lmmsize,
- obddev->u.cli.cl_default_mds_easize);
- rc = lustre_msg_size(class_exp2cliimp(exp)->imp_msg_magic, 6,
- size);
- if (rc & (rc - 1))
- size[DLM_INTENT_REC_OFF + 2] =
- min(size[DLM_INTENT_REC_OFF+2]+round_up(rc)-rc,
+ cl_max_mds_easize,
+ [DLM_REPLY_REC_OFF+2] = LUSTRE_POSIX_ACL_MAX_SIZE };
+ CFS_LIST_HEAD(cancels);
+ int do_join = (it->it_flags & O_JOIN_FILE) && data->data;
+ int count = 0;
+ int mode;
+ int rc;
+
+ it->it_create_mode |= S_IFREG;
+
+ rc = lustre_msg_size(class_exp2cliimp(exp)->imp_msg_magic, 6, size);
+ if (rc & (rc - 1))
+ size[DLM_INTENT_REC_OFF + 2] =
+ min(size[DLM_INTENT_REC_OFF + 2] + round_up(rc) - rc,
obddev->u.cli.cl_max_mds_easize);
- if (it->it_flags & O_JOIN_FILE) {
- __u64 head_size = *(__u32*)cb_data;
- __u32 tsize = *(__u32*)lmm;
+ /* If inode is known, cancel conflicting OPEN locks. */
+ if (data->fid2.id) {
+ if (it->it_flags & (FMODE_WRITE|MDS_OPEN_TRUNC))
+ mode = LCK_CW;
+#ifdef FMODE_EXEC
+ else if (it->it_flags & FMODE_EXEC)
+ mode = LCK_PR;
+#endif
+ else
+ mode = LCK_CR;
+ count = mdc_resource_get_unused(exp, &data->fid2, &cancels,
+ mode, MDS_INODELOCK_OPEN);
+ }
+ /* If CREATE or JOIN_FILE, cancel parent's UPDATE lock. */
+ if (it->it_op & IT_CREAT || do_join)
+ mode = LCK_EX;
+ else
+ mode = LCK_CR;
+ count += mdc_resource_get_unused(exp, &data->fid1, &cancels, mode,
+ MDS_INODELOCK_UPDATE);
+ if (do_join) {
+ __u64 head_size = (*(__u64 *)data->data);
/* join is like an unlink of the tail */
- policy.l_inodebits.bits = MDS_INODELOCK_UPDATE;
- size[DLM_INTENT_REC_OFF + 3] =
- sizeof(struct mds_rec_join);
- req = ptlrpc_prep_req(class_exp2cliimp(exp),
- LUSTRE_DLM_VERSION, LDLM_ENQUEUE,
- 7, size, NULL);
- /* when joining file, cb_data and lmm args together
- * indicate the head file size*/
- mdc_join_pack(req, DLM_INTENT_REC_OFF + 3, data,
- (head_size << 32) | tsize);
- cb_data = NULL;
- lmm = NULL;
- } else {
- req = ptlrpc_prep_req(class_exp2cliimp(exp),
- LUSTRE_DLM_VERSION, LDLM_ENQUEUE,
- 6, size, NULL);
- }
-
- if (!req)
- RETURN(-ENOMEM);
+ size[DLM_INTENT_REC_OFF + 3] = sizeof(struct mds_rec_join);
+ req = ldlm_prep_enqueue_req(exp, 7, size, &cancels, count);
+ if (req)
+ mdc_join_pack(req, DLM_INTENT_REC_OFF + 3, data,
+ head_size);
+ } else {
+ req = ldlm_prep_enqueue_req(exp, 6, size, &cancels, count);
+ it->it_flags &= ~O_JOIN_FILE;
+ }
+ if (req) {
spin_lock(&req->rq_lock);
req->rq_replay = 1;
spin_unlock(&req->rq_lock);
lit->opc = (__u64)it->it_op;
/* pack the intended request */
- mdc_open_pack(req, DLM_INTENT_REC_OFF, data, it->it_create_mode,
- 0, it->it_flags, lmm, lmmsize);
+ mdc_open_pack(req, DLM_INTENT_REC_OFF, data,
+ it->it_create_mode, 0, it->it_flags,
+ lmm, lmmsize);
- repsize[repbufcnt++] = LUSTRE_POSIX_ACL_MAX_SIZE;
- } else if (it->it_op & IT_UNLINK) {
- size[DLM_INTENT_REC_OFF] = sizeof(struct mds_rec_unlink);
- size[DLM_INTENT_REC_OFF + 1] = data->namelen + 1;
- policy.l_inodebits.bits = MDS_INODELOCK_UPDATE;
- req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_DLM_VERSION,
- LDLM_ENQUEUE, 5, size, NULL);
- if (!req)
- RETURN(-ENOMEM);
+ ptlrpc_req_set_repsize(req, 5, repsize);
+ }
+ return req;
+}
+static struct ptlrpc_request *mdc_intent_unlink_pack(struct obd_export *exp,
+ struct lookup_intent *it,
+ struct mdc_op_data *data)
+{
+ struct ptlrpc_request *req;
+ struct ldlm_intent *lit;
+ struct obd_device *obddev = class_exp2obd(exp);
+ int size[5] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
+ [DLM_LOCKREQ_OFF] = sizeof(struct ldlm_request),
+ [DLM_INTENT_IT_OFF] = sizeof(*lit),
+ [DLM_INTENT_REC_OFF] = sizeof(struct mds_rec_unlink),
+ [DLM_INTENT_REC_OFF+1]= data->namelen + 1 };
+ int repsize[5] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
+ [DLM_LOCKREPLY_OFF] = sizeof(struct ldlm_reply),
+ [DLM_REPLY_REC_OFF] = sizeof(struct mds_body),
+ [DLM_REPLY_REC_OFF+1] = obddev->u.cli.
+ cl_max_mds_easize,
+ [DLM_REPLY_REC_OFF+2] = obddev->u.cli.
+ cl_max_mds_cookiesize };
+
+ req = ldlm_prep_enqueue_req(exp, 5, size, NULL, 0);
+ if (req) {
/* pack the intent */
lit = lustre_msg_buf(req->rq_reqmsg, DLM_INTENT_IT_OFF,
sizeof(*lit));
/* pack the intended request */
mdc_unlink_pack(req, DLM_INTENT_REC_OFF, data);
- repsize[repbufcnt++] = obddev->u.cli.cl_max_mds_cookiesize;
- } else if (it->it_op & (IT_GETATTR | IT_LOOKUP)) {
- obd_valid valid = OBD_MD_FLGETATTR | OBD_MD_FLEASIZE |
- OBD_MD_FLACL | OBD_MD_FLMODEASIZE |
- OBD_MD_FLDIREA;
- size[DLM_INTENT_REC_OFF] = sizeof(struct mds_body);
- size[DLM_INTENT_REC_OFF + 1] = data->namelen + 1;
-
- if (it->it_op & IT_GETATTR)
- policy.l_inodebits.bits = MDS_INODELOCK_UPDATE;
+ ptlrpc_req_set_repsize(req, 5, repsize);
+ }
+ return req;
+}
- req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_DLM_VERSION,
- LDLM_ENQUEUE, 5, size, NULL);
- if (!req)
- RETURN(-ENOMEM);
+static struct ptlrpc_request *mdc_intent_lookup_pack(struct obd_export *exp,
+ struct lookup_intent *it,
+ struct mdc_op_data *data)
+{
+ struct ptlrpc_request *req;
+ struct ldlm_intent *lit;
+ struct obd_device *obddev = class_exp2obd(exp);
+ int size[5] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
+ [DLM_LOCKREQ_OFF] = sizeof(struct ldlm_request),
+ [DLM_INTENT_IT_OFF] = sizeof(*lit),
+ [DLM_INTENT_REC_OFF] = sizeof(struct mds_body),
+ [DLM_INTENT_REC_OFF+1]= data->namelen + 1 };
+ int repsize[5] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
+ [DLM_LOCKREPLY_OFF] = sizeof(struct ldlm_reply),
+ [DLM_REPLY_REC_OFF] = sizeof(struct mds_body),
+ [DLM_REPLY_REC_OFF+1] = obddev->u.cli.
+ cl_max_mds_easize,
+ [DLM_REPLY_REC_OFF+2] = LUSTRE_POSIX_ACL_MAX_SIZE };
+ obd_valid valid = OBD_MD_FLGETATTR | OBD_MD_FLEASIZE | OBD_MD_FLACL |
+ OBD_MD_FLMODEASIZE | OBD_MD_FLDIREA;
+ req = ldlm_prep_enqueue_req(exp, 5, size, NULL, 0);
+ if (req) {
/* pack the intent */
lit = lustre_msg_buf(req->rq_reqmsg, DLM_INTENT_IT_OFF,
sizeof(*lit));
lit->opc = (__u64)it->it_op;
/* pack the intended request */
- mdc_getattr_pack(req, DLM_INTENT_REC_OFF, valid,
- it->it_flags, data);
-
- repsize[repbufcnt++] = LUSTRE_POSIX_ACL_MAX_SIZE;
- } else if (it->it_op == IT_READDIR) {
- policy.l_inodebits.bits = MDS_INODELOCK_UPDATE;
- req = ptlrpc_prep_req(class_exp2cliimp(exp), LUSTRE_DLM_VERSION,
- LDLM_ENQUEUE, 2, size, NULL);
- if (!req)
- RETURN(-ENOMEM);
-
- repbufcnt = 2;
- } else {
- LBUG();
- RETURN(-EINVAL);
+ mdc_getattr_pack(req, DLM_INTENT_REC_OFF, valid, it->it_flags,
+ data);
+ ptlrpc_req_set_repsize(req, 5, repsize);
}
+ return req;
+}
- /* get ready for the reply */
- ptlrpc_req_set_repsize(req, repbufcnt, repsize);
+static struct ptlrpc_request *mdc_intent_readdir_pack(struct obd_export *exp)
+{
+ struct ptlrpc_request *req;
+ int size[2] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
+ [DLM_LOCKREQ_OFF] = sizeof(struct ldlm_request) };
+ int repsize[2] = { [MSG_PTLRPC_BODY_OFF] = sizeof(struct ptlrpc_body),
+ [DLM_LOCKREPLY_OFF] = sizeof(struct ldlm_reply) };
+
+ req = ldlm_prep_enqueue_req(exp, 2, size, NULL, 0);
+ if (req)
+ ptlrpc_req_set_repsize(req, 2, repsize);
+ return req;
+}
- /* It is important to obtain rpc_lock first (if applicable), so that
- * threads that are serialised with rpc_lock are not polluting our
- * rpcs in flight counter */
- mdc_get_rpc_lock(obddev->u.cli.cl_rpc_lock, it);
- mdc_enter_request(&obddev->u.cli);
- rc = ldlm_cli_enqueue(exp, &req, res_id, lock_type, &policy,
- lock_mode, &flags, cb_blocking, cb_completion,
- NULL, cb_data, NULL, 0, NULL, lockh, 0);
- mdc_exit_request(&obddev->u.cli);
- mdc_put_rpc_lock(obddev->u.cli.cl_rpc_lock, it);
+static int mdc_finish_enqueue(struct obd_export *exp,
+ struct ptlrpc_request *req,
+ struct ldlm_enqueue_info *einfo,
+ struct lookup_intent *it,
+ struct lustre_handle *lockh,
+ int rc)
+{
+ struct ldlm_request *lockreq;
+ struct ldlm_reply *lockrep;
+ ENTRY;
/* Similarly, if we're going to replay this request, we don't want to
* actually get a lock, just perform the intent. */
lockreq->lock_flags |= LDLM_FL_INTENT_ONLY;
}
- /* This can go when we're sure that this can never happen */
- LASSERT(rc != -ENOENT);
if (rc == ELDLM_LOCK_ABORTED) {
- lock_mode = 0;
+ einfo->ei_mode = 0;
memset(lockh, 0, sizeof(*lockh));
rc = 0;
} else if (rc != 0) {
/* If the server gave us back a different lock mode, we should
* fix up our variables. */
- if (lock->l_req_mode != lock_mode) {
+ if (lock->l_req_mode != einfo->ei_mode) {
ldlm_lock_addref(lockh, lock->l_req_mode);
- ldlm_lock_decref(lockh, lock_mode);
- lock_mode = lock->l_req_mode;
+ ldlm_lock_decref(lockh, einfo->ei_mode);
+ einfo->ei_mode = lock->l_req_mode;
}
LDLM_LOCK_PUT(lock);
}
lockrep = lustre_msg_buf(req->rq_repmsg, DLM_LOCKREPLY_OFF,
sizeof(*lockrep));
LASSERT(lockrep != NULL); /* checked by ldlm_cli_enqueue() */
- LASSERT_REPSWABBED(req, DLM_LOCKREPLY_OFF); /* swabbed by ldlm_cli_enqueue() */
+ /* swabbed by ldlm_cli_enqueue() */
+ LASSERT(lustre_rep_swabbed(req, DLM_LOCKREPLY_OFF));
it->d.lustre.it_disposition = (int)lockrep->lock_policy_res1;
it->d.lustre.it_status = (int)lockrep->lock_policy_res2;
- it->d.lustre.it_lock_mode = lock_mode;
+ it->d.lustre.it_lock_mode = einfo->ei_mode;
it->d.lustre.it_data = req;
if (it->d.lustre.it_status < 0 && req->rq_replay)
* It's important that we do this first! Otherwise we might exit the
* function without doing so, and try to replay a failed create
* (bug 3440) */
- if (it->it_op & IT_OPEN && req->rq_replay &&
- (!it_disposition(it, DISP_OPEN_OPEN) ||it->d.lustre.it_status != 0))
+ if ((it->it_op & IT_OPEN) &&
+ req->rq_replay &&
+ (!it_disposition(it, DISP_OPEN_OPEN) ||
+ it->d.lustre.it_status != 0))
mdc_clear_replay_flag(req, it->d.lustre.it_status);
DEBUG_REQ(D_RPCTRACE, req, "op: %d disposition: %x, status: %d",
it->it_op,it->d.lustre.it_disposition,it->d.lustre.it_status);
/* We know what to expect, so we do any byte flipping required here */
- LASSERT(repbufcnt == 5 || repbufcnt == 2);
- if (repbufcnt == 5) {
+ if (it->it_op & (IT_OPEN | IT_UNLINK | IT_LOOKUP | IT_GETATTR)) {
struct mds_body *body;
body = lustre_swab_repbuf(req, DLM_REPLY_REC_OFF, sizeof(*body),
mdc_set_open_replay_data(NULL, req);
if ((body->valid & OBD_MD_FLEASIZE) != 0) {
+ void *eadata;
+
/* The eadata is opaque; just check that it is there.
* Eventually, obd_unpackmd() will check the contents */
eadata = lustre_swab_repbuf(req, DLM_REPLY_REC_OFF + 1,
RETURN (-EPROTO);
}
if (body->valid & OBD_MD_FLMODEASIZE) {
+ struct obd_device *obddev = class_exp2obd(exp);
+
if (obddev->u.cli.cl_max_mds_easize <
body->max_mdsize) {
obddev->u.cli.cl_max_mds_easize =
* reallocate it here to hold the actual LOV EA. */
if (it->it_op & IT_OPEN) {
int offset = DLM_INTENT_REC_OFF + 2;
+ void *lmm;
if (lustre_msg_buflen(req->rq_reqmsg, offset) <
body->eadatasize)
- mdc_realloc_openmsg(req, body, size);
+ mdc_realloc_openmsg(req, body);
lmm = lustre_msg_buf(req->rq_reqmsg, offset,
body->eadatasize);
RETURN(rc);
}
+
+/* We always reserve enough space in the reply packet for a stripe MD, because
+ * we don't know in advance the file type. */
+int mdc_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
+ struct lookup_intent *it, struct mdc_op_data *data,
+ struct lustre_handle *lockh, void *lmm, int lmmsize,
+ int extra_lock_flags)
+{
+ struct ptlrpc_request *req;
+ struct obd_device *obddev = class_exp2obd(exp);
+ struct ldlm_res_id res_id =
+ { .name = {data->fid1.id, data->fid1.generation} };
+ ldlm_policy_data_t policy = { .l_inodebits = { MDS_INODELOCK_LOOKUP } };
+ int flags = extra_lock_flags | LDLM_FL_HAS_INTENT;
+ int rc;
+ ENTRY;
+
+ LASSERTF(einfo->ei_type == LDLM_IBITS,"lock type %d\n", einfo->ei_type);
+ if (it->it_op & (IT_UNLINK | IT_GETATTR | IT_READDIR))
+ policy.l_inodebits.bits = MDS_INODELOCK_UPDATE;
+
+ if (it->it_op & IT_OPEN) {
+ req = mdc_intent_open_pack(exp, it, data, lmm, lmmsize);
+ if (it->it_flags & O_JOIN_FILE) {
+ policy.l_inodebits.bits = MDS_INODELOCK_UPDATE;
+ }
+ } else if (it->it_op & IT_UNLINK) {
+ req = mdc_intent_unlink_pack(exp, it, data);
+ } else if (it->it_op & (IT_GETATTR | IT_LOOKUP)) {
+ req = mdc_intent_lookup_pack(exp, it, data);
+ } else if (it->it_op == IT_READDIR) {
+ req = mdc_intent_readdir_pack(exp);
+ } else {
+ CERROR("bad it_op %x\n", it->it_op);
+ RETURN(-EINVAL);
+ }
+
+ if (!req)
+ RETURN(-ENOMEM);
+
+ /* It is important to obtain rpc_lock first (if applicable), so that
+ * threads that are serialised with rpc_lock are not polluting our
+ * rpcs in flight counter */
+ mdc_get_rpc_lock(obddev->u.cli.cl_rpc_lock, it);
+ mdc_enter_request(&obddev->u.cli);
+ rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, &policy, &flags, NULL,
+ 0, NULL, lockh, 0);
+ mdc_exit_request(&obddev->u.cli);
+ mdc_put_rpc_lock(obddev->u.cli.cl_rpc_lock, it);
+
+ rc = mdc_finish_enqueue(exp, req, einfo, it, lockh, rc);
+
+ RETURN(rc);
+}
EXPORT_SYMBOL(mdc_enqueue);
+int mdc_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
+ struct ll_fid *fid)
+{
+ /* We could just return 1 immediately, but since we should only
+ * be called in revalidate_it if we already have a lock, let's
+ * verify that. */
+ struct ldlm_res_id res_id = {.name ={fid->id, fid->generation}};
+ struct lustre_handle lockh;
+ ldlm_policy_data_t policy;
+ ldlm_mode_t mode;
+
+ /* As not all attributes are kept under update lock, e.g.
+ owner/group/acls are under lookup lock, we need both
+ ibits for GETATTR. */
+ policy.l_inodebits.bits = (it->it_op == IT_GETATTR) ?
+ MDS_INODELOCK_UPDATE | MDS_INODELOCK_LOOKUP :
+ MDS_INODELOCK_LOOKUP;
+
+ mode = ldlm_lock_match(exp->exp_obd->obd_namespace,
+ LDLM_FL_BLOCK_GRANTED, &res_id, LDLM_IBITS,
+ &policy, LCK_CR|LCK_CW|LCK_PR|LCK_PW, &lockh);
+ if (mode) {
+ memcpy(&it->d.lustre.it_lock_handle, &lockh, sizeof(lockh));
+ it->d.lustre.it_lock_mode = mode;
+ }
+
+ return !!mode;
+}
+EXPORT_SYMBOL(mdc_revalidate_lock);
+
+static int mdc_finish_intent_lock(struct obd_export *exp,
+ struct ptlrpc_request *req,
+ struct mdc_op_data *data,
+ struct lookup_intent *it,
+ struct lustre_handle *lockh)
+{
+ struct mds_body *mds_body;
+ struct lustre_handle old_lock;
+ struct ldlm_lock *lock;
+ int rc;
+ ENTRY;
+
+ LASSERT(req != NULL);
+ LASSERT(req != LP_POISON);
+ LASSERT(req->rq_repmsg != LP_POISON);
+
+ if (!it_disposition(it, DISP_IT_EXECD)) {
+ /* The server failed before it even started executing the
+ * intent, i.e. because it couldn't unpack the request. */
+ LASSERT(it->d.lustre.it_status != 0);
+ RETURN(it->d.lustre.it_status);
+ }
+ rc = it_open_error(DISP_IT_EXECD, it);
+ if (rc)
+ RETURN(rc);
+
+ mds_body = lustre_msg_buf(req->rq_repmsg, DLM_REPLY_REC_OFF,
+ sizeof(*mds_body));
+ /* mdc_enqueue checked */
+ LASSERT(mds_body != NULL);
+ /* mdc_enqueue swabbed */
+ LASSERT(lustre_rep_swabbed(req, DLM_REPLY_REC_OFF));
+
+ /* If we were revalidating a fid/name pair, mark the intent in
+ * case we fail and get called again from lookup */
+ if (data->fid2.id && (it->it_op != IT_GETATTR)) {
+ it_set_disposition(it, DISP_ENQ_COMPLETE);
+ /* Also: did we find the same inode? */
+ if (memcmp(&data->fid2, &mds_body->fid1, sizeof(data->fid2)))
+ RETURN(-ESTALE);
+ }
+
+ rc = it_open_error(DISP_LOOKUP_EXECD, it);
+ if (rc)
+ RETURN(rc);
+
+ /* keep requests around for the multiple phases of the call
+ * this shows the DISP_XX must guarantee we make it into the call
+ */
+ if (!it_disposition(it, DISP_ENQ_CREATE_REF) &&
+ it_disposition(it, DISP_OPEN_CREATE) &&
+ !it_open_error(DISP_OPEN_CREATE, it)) {
+ it_set_disposition(it, DISP_ENQ_CREATE_REF);
+ ptlrpc_request_addref(req); /* balanced in ll_create_node */
+ }
+ if (!it_disposition(it, DISP_ENQ_OPEN_REF) &&
+ it_disposition(it, DISP_OPEN_OPEN) &&
+ !it_open_error(DISP_OPEN_OPEN, it)) {
+ it_set_disposition(it, DISP_ENQ_OPEN_REF);
+ ptlrpc_request_addref(req); /* balanced in ll_file_open */
+ /* BUG 11546 - eviction in the middle of open rpc processing */
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MDC_ENQUEUE_PAUSE, obd_timeout);
+ }
+
+ if (it->it_op & IT_CREAT) {
+ /* XXX this belongs in ll_create_it */
+ } else if (it->it_op == IT_OPEN) {
+ LASSERT(!it_disposition(it, DISP_OPEN_CREATE));
+ } else {
+ LASSERT(it->it_op & (IT_GETATTR | IT_LOOKUP));
+ }
+
+ /* If we already have a matching lock, then cancel the new
+ * one. We have to set the data here instead of in
+ * mdc_enqueue, because we need to use the child's inode as
+ * the l_ast_data to match, and that's not available until
+ * intent_finish has performed the iget().) */
+ lock = ldlm_handle2lock(lockh);
+ if (lock) {
+ ldlm_policy_data_t policy = lock->l_policy_data;
+
+ LDLM_DEBUG(lock, "matching against this");
+ LDLM_LOCK_PUT(lock);
+ memcpy(&old_lock, lockh, sizeof(*lockh));
+ if (ldlm_lock_match(NULL, LDLM_FL_BLOCK_GRANTED, NULL,
+ LDLM_IBITS, &policy, LCK_NL, &old_lock)) {
+ ldlm_lock_decref_and_cancel(lockh,
+ it->d.lustre.it_lock_mode);
+ memcpy(lockh, &old_lock, sizeof(old_lock));
+ memcpy(&it->d.lustre.it_lock_handle, lockh,
+ sizeof(*lockh));
+ }
+ }
+
+ CDEBUG(D_DENTRY,"D_IT dentry %.*s intent: %s status %d disp %x rc %d\n",
+ data->namelen, data->name, ldlm_it2str(it->it_op),
+ it->d.lustre.it_status, it->d.lustre.it_disposition, rc);
+ RETURN(rc);
+}
+
/*
* This long block is all about fixing up the lock and request state
* so that it is correct as of the moment _before_ the operation was
ldlm_blocking_callback cb_blocking, int extra_lock_flags)
{
struct lustre_handle lockh;
- struct ptlrpc_request *request;
- int rc = 0;
- struct mds_body *mds_body;
- struct lustre_handle old_lock;
- struct ldlm_lock *lock;
+ int rc;
ENTRY;
+
LASSERT(it);
CDEBUG(D_DLMTRACE,"name: %.*s in inode "LPU64", intent: %s flags %#o\n",
if (op_data->fid2.id &&
(it->it_op == IT_LOOKUP || it->it_op == IT_GETATTR)) {
- /* We could just return 1 immediately, but since we should only
- * be called in revalidate_it if we already have a lock, let's
- * verify that. */
- struct ldlm_res_id res_id = {.name ={op_data->fid2.id,
- op_data->fid2.generation}};
- struct lustre_handle lockh;
- ldlm_policy_data_t policy;
- int mode = LCK_CR;
-
- /* As not all attributes are kept under update lock, e.g.
- owner/group/acls are under lookup lock, we need both
- ibits for GETATTR. */
- policy.l_inodebits.bits = (it->it_op == IT_GETATTR) ?
- MDS_INODELOCK_UPDATE | MDS_INODELOCK_LOOKUP :
- MDS_INODELOCK_LOOKUP;
-
- rc = ldlm_lock_match(exp->exp_obd->obd_namespace,
- LDLM_FL_BLOCK_GRANTED, &res_id,
- LDLM_IBITS, &policy, LCK_CR, &lockh);
- if (!rc) {
- mode = LCK_CW;
- rc = ldlm_lock_match(exp->exp_obd->obd_namespace,
- LDLM_FL_BLOCK_GRANTED, &res_id,
- LDLM_IBITS, &policy,LCK_CW,&lockh);
- }
- if (!rc) {
- mode = LCK_PR;
- rc = ldlm_lock_match(exp->exp_obd->obd_namespace,
- LDLM_FL_BLOCK_GRANTED, &res_id,
- LDLM_IBITS, &policy,LCK_PR,&lockh);
- }
- if (rc) {
- memcpy(&it->d.lustre.it_lock_handle, &lockh,
- sizeof(lockh));
- it->d.lustre.it_lock_mode = mode;
- }
-
+ rc = mdc_revalidate_lock(exp, it, &op_data->fid2);
/* Only return failure if it was not GETATTR by cfid
(from inode_revalidate) */
if (rc || op_data->namelen != 0)
* this and use the request from revalidate. In this case, revalidate
* never dropped its reference, so the refcounts are all OK */
if (!it_disposition(it, DISP_ENQ_COMPLETE)) {
+ struct ldlm_enqueue_info einfo =
+ { LDLM_IBITS, it_to_lock_mode(it), cb_blocking,
+ ldlm_completion_ast, NULL, NULL };
- rc = mdc_enqueue(exp, LDLM_IBITS, it, it_to_lock_mode(it),
- op_data, &lockh, lmm, lmmsize,
- ldlm_completion_ast, cb_blocking, NULL,
- extra_lock_flags);
+ rc = mdc_enqueue(exp, &einfo, it, op_data, &lockh,
+ lmm, lmmsize, extra_lock_flags);
if (rc < 0)
RETURN(rc);
memcpy(&it->d.lustre.it_lock_handle, &lockh, sizeof(lockh));
* lookup, so we clear DISP_ENQ_COMPLETE */
it_clear_disposition(it, DISP_ENQ_COMPLETE);
}
- request = *reqp = it->d.lustre.it_data;
- LASSERT(request != NULL);
- LASSERT(request != LP_POISON);
- LASSERT(request->rq_repmsg != LP_POISON);
- if (!it_disposition(it, DISP_IT_EXECD)) {
- /* The server failed before it even started executing the
- * intent, i.e. because it couldn't unpack the request. */
- LASSERT(it->d.lustre.it_status != 0);
- RETURN(it->d.lustre.it_status);
- }
- rc = it_open_error(DISP_IT_EXECD, it);
- if (rc)
- RETURN(rc);
+ *reqp = it->d.lustre.it_data;
+ rc = mdc_finish_intent_lock(exp, *reqp, op_data, it, &lockh);
- mds_body = lustre_msg_buf(request->rq_repmsg, DLM_REPLY_REC_OFF,
- sizeof(*mds_body));
- LASSERT(mds_body != NULL); /* mdc_enqueue checked */
- LASSERT_REPSWABBED(request, 1); /* mdc_enqueue swabbed */
+ RETURN(rc);
+}
+EXPORT_SYMBOL(mdc_intent_lock);
- /* If we were revalidating a fid/name pair, mark the intent in
- * case we fail and get called again from lookup */
- if (op_data->fid2.id && (it->it_op != IT_GETATTR)) {
- it_set_disposition(it, DISP_ENQ_COMPLETE);
- /* Also: did we find the same inode? */
- if (memcmp(&op_data->fid2, &mds_body->fid1,
- sizeof(op_data->fid2)))
- RETURN (-ESTALE);
- }
+static int mdc_intent_getattr_async_interpret(struct ptlrpc_request *req,
+ void *unused, int rc)
+{
+ struct mdc_enqueue_args *ma;
+ struct md_enqueue_info *minfo;
+ struct ldlm_enqueue_info *einfo;
+ struct obd_export *exp;
+ struct lookup_intent *it;
+ struct lustre_handle *lockh;
+ struct obd_device *obddev;
+ int flags = LDLM_FL_HAS_INTENT;
+ ENTRY;
- rc = it_open_error(DISP_LOOKUP_EXECD, it);
+ ma = (struct mdc_enqueue_args *)&req->rq_async_args;
+ minfo = ma->ma_mi;
+ einfo = ma->ma_ei;
+
+ exp = minfo->mi_exp;
+ it = &minfo->mi_it;
+ lockh = &minfo->mi_lockh;
+
+ obddev = class_exp2obd(exp);
+
+ mdc_exit_request(&obddev->u.cli);
+
+ rc = ldlm_cli_enqueue_fini(exp, req, einfo->ei_type, 1, einfo->ei_mode,
+ &flags, NULL, 0, NULL, lockh, rc);
+
+ rc = mdc_finish_enqueue(exp, req, einfo, it, lockh, rc);
if (rc)
- RETURN(rc);
+ GOTO(out, rc);
- /* keep requests around for the multiple phases of the call
- * this shows the DISP_XX must guarantee we make it into the call
- */
- if (!it_disposition(it, DISP_ENQ_CREATE_REF) &&
- it_disposition(it, DISP_OPEN_CREATE) &&
- !it_open_error(DISP_OPEN_CREATE, it)) {
- it_set_disposition(it, DISP_ENQ_CREATE_REF);
- ptlrpc_request_addref(request); /* balanced in ll_create_node */
- }
- if (!it_disposition(it, DISP_ENQ_OPEN_REF) &&
- it_disposition(it, DISP_OPEN_OPEN) &&
- !it_open_error(DISP_OPEN_OPEN, it)) {
- it_set_disposition(it, DISP_ENQ_OPEN_REF);
- ptlrpc_request_addref(request); /* balanced in ll_file_open */
- }
+ memcpy(&it->d.lustre.it_lock_handle, lockh, sizeof(*lockh));
- if (it->it_op & IT_CREAT) {
- /* XXX this belongs in ll_create_it */
- } else if (it->it_op == IT_OPEN) {
- LASSERT(!it_disposition(it, DISP_OPEN_CREATE));
- } else {
- LASSERT(it->it_op & (IT_GETATTR | IT_LOOKUP));
- }
+ rc = mdc_finish_intent_lock(exp, req, &minfo->mi_data, it, lockh);
+ GOTO(out, rc);
+out:
+ OBD_FREE_PTR(einfo);
+ minfo->mi_cb(exp, req, minfo, rc);
- /* If we already have a matching lock, then cancel the new
- * one. We have to set the data here instead of in
- * mdc_enqueue, because we need to use the child's inode as
- * the l_ast_data to match, and that's not available until
- * intent_finish has performed the iget().) */
- lock = ldlm_handle2lock(&lockh);
- if (lock) {
- ldlm_policy_data_t policy = lock->l_policy_data;
- LDLM_DEBUG(lock, "matching against this");
- LDLM_LOCK_PUT(lock);
- memcpy(&old_lock, &lockh, sizeof(lockh));
- if (ldlm_lock_match(NULL, LDLM_FL_BLOCK_GRANTED, NULL,
- LDLM_IBITS, &policy, LCK_NL, &old_lock)) {
- ldlm_lock_decref_and_cancel(&lockh,
- it->d.lustre.it_lock_mode);
- memcpy(&lockh, &old_lock, sizeof(old_lock));
- memcpy(&it->d.lustre.it_lock_handle, &lockh,
- sizeof(lockh));
- }
+ return 0;
+}
+
+int mdc_intent_getattr_async(struct obd_export *exp,
+ struct md_enqueue_info *minfo,
+ struct ldlm_enqueue_info *einfo)
+{
+ struct mdc_op_data *op_data = &minfo->mi_data;
+ struct lookup_intent *it = &minfo->mi_it;
+ struct ptlrpc_request *req;
+ struct obd_device *obddev = class_exp2obd(exp);
+ struct ldlm_res_id res_id = {
+ .name = {op_data->fid1.id,
+ op_data->fid1.generation}
+ };
+ ldlm_policy_data_t policy = {
+ .l_inodebits = { MDS_INODELOCK_LOOKUP }
+ };
+ struct mdc_enqueue_args *aa;
+ int rc;
+ int flags = LDLM_FL_HAS_INTENT;
+ ENTRY;
+
+ CDEBUG(D_DLMTRACE,"name: %.*s in inode "LPU64", intent: %s flags %#o\n",
+ op_data->namelen, op_data->name, op_data->fid1.id,
+ ldlm_it2str(it->it_op), it->it_flags);
+
+ req = mdc_intent_lookup_pack(exp, it, op_data);
+ if (!req)
+ RETURN(-ENOMEM);
+
+ mdc_enter_request(&obddev->u.cli);
+ rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, &policy, &flags, NULL,
+ 0, NULL, &minfo->mi_lockh, 1);
+ if (rc < 0) {
+ mdc_exit_request(&obddev->u.cli);
+ RETURN(rc);
}
- CDEBUG(D_DENTRY,"D_IT dentry %.*s intent: %s status %d disp %x rc %d\n",
- op_data->namelen, op_data->name, ldlm_it2str(it->it_op),
- it->d.lustre.it_status, it->d.lustre.it_disposition, rc);
- RETURN(rc);
+ CLASSERT(sizeof(*aa) < sizeof(req->rq_async_args));
+ aa = (struct mdc_enqueue_args *)&req->rq_async_args;
+ aa->ma_mi = minfo;
+ aa->ma_ei = einfo;
+ req->rq_interpret_reply = mdc_intent_getattr_async_interpret;
+ ptlrpcd_add_req(req);
+
+ RETURN(0);
}
-EXPORT_SYMBOL(mdc_intent_lock);
+EXPORT_SYMBOL(mdc_intent_getattr_async);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff