-typedef ssize_t llu_file_piov_t(const struct iovec *iovec, int iovlen,
- _SYSIO_OFF_T pos, ssize_t len,
- void *private);
-
-size_t llap_cookie_size;
-
-static int llu_lock_to_stripe_offset(struct obd_export *exp,
- struct lov_stripe_md *lsm,
- struct ldlm_lock *lock)
-{
- struct {
- char name[16];
- struct ldlm_lock *lock;
- } key = { .name = KEY_LOCK_TO_STRIPE, .lock = lock };
- __u32 stripe, vallen = sizeof(stripe);
- int rc;
- ENTRY;
-
- if (lsm == NULL || lsm->lsm_stripe_count == 1)
- RETURN(0);
-
- /* get our offset in the lov */
- rc = obd_get_info(NULL, exp, sizeof(key), &key, &vallen, &stripe, lsm);
- if (rc != 0) {
- CERROR("obd_get_info: rc = %d\n", rc);
- LBUG();
- }
- LASSERT(stripe < lsm->lsm_stripe_count);
- RETURN(stripe);
-}
-
-int llu_extent_lock_cancel_cb(struct ldlm_lock *lock,
- struct ldlm_lock_desc *new, void *data,
- int flag)
-{
- struct lustre_handle lockh = { 0 };
- int rc;
- ENTRY;
-
- if ((unsigned long)data > 0 && (unsigned long)data < 0x1000) {
- LDLM_ERROR(lock, "cancelling lock with bad data %p", data);
- LBUG();
- }
-
- switch (flag) {
- case LDLM_CB_BLOCKING:
- ldlm_lock2handle(lock, &lockh);
- rc = ldlm_cli_cancel(&lockh, 0);
- if (rc != ELDLM_OK)
- CERROR("ldlm_cli_cancel failed: %d\n", rc);
- break;
- case LDLM_CB_CANCELING: {
- struct inode *inode;
- struct llu_inode_info *lli;
- struct lov_stripe_md *lsm;
- __u32 stripe;
- __u64 kms;
-
- /* This lock wasn't granted, don't try to evict pages */
- if (lock->l_req_mode != lock->l_granted_mode)
- RETURN(0);
-
- inode = llu_inode_from_lock(lock);
- if (!inode)
- RETURN(0);
- lli= llu_i2info(inode);
- if (!lli)
- goto iput;
- if (!lli->lli_has_smd)
- goto iput;
-
- lsm = ccc_inode_lsm_get(inode);
- if (lsm == NULL)
- goto iput;
-
- stripe = llu_lock_to_stripe_offset(llu_i2obdexp(inode),
- lsm, lock);
- lock_res_and_lock(lock);
- kms = ldlm_extent_shift_kms(lock,
- lsm->lsm_oinfo[stripe]->loi_kms);
- unlock_res_and_lock(lock);
- if (lsm->lsm_oinfo[stripe]->loi_kms != kms)
- LDLM_DEBUG(lock, "updating kms from "LPU64" to "LPU64,
- lsm->lsm_oinfo[stripe]->loi_kms, kms);
- loi_kms_set(lsm->lsm_oinfo[stripe], kms);
- ccc_inode_lsm_put(inode, lsm);
-iput:
- I_RELE(inode);
- break;
- }
- default:
- LBUG();
- }
-
- RETURN(0);
-}
-
-static int llu_glimpse_callback(struct ldlm_lock *lock, void *reqp)
-{
- struct ptlrpc_request *req = reqp;
- struct inode *inode = llu_inode_from_lock(lock);
- struct llu_inode_info *lli;
- struct ost_lvb *lvb;
- struct lov_stripe_md *lsm;
- int rc, stripe = 0;
- ENTRY;
-
- if (inode == NULL)
- GOTO(out, rc = -ELDLM_NO_LOCK_DATA);
- lli = llu_i2info(inode);
- if (lli == NULL)
- GOTO(iput, rc = -ELDLM_NO_LOCK_DATA);
-
- req_capsule_extend(&req->rq_pill, &RQF_LDLM_GL_CALLBACK);
- if (exp_connect_lvb_type(req->rq_export))
- req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
- sizeof(*lvb));
- else
- req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
- sizeof(struct ost_lvb_v1));
- rc = req_capsule_server_pack(&req->rq_pill);
- if (rc) {
- CERROR("failed pack reply: %d\n", rc);
- GOTO(iput, rc);
- }
-
- lsm = ccc_inode_lsm_get(inode);
- if (lsm == NULL)
- GOTO(iput, rc = -ELDLM_NO_LOCK_DATA);
-
- /* First, find out which stripe index this lock corresponds to. */
- stripe = llu_lock_to_stripe_offset(llu_i2obdexp(inode), lsm, lock);
-
- lvb = req_capsule_server_get(&req->rq_pill, &RMF_DLM_LVB);
- lvb->lvb_size = lsm->lsm_oinfo[stripe]->loi_kms;
- ccc_inode_lsm_put(inode, lsm);
-
- LDLM_DEBUG(lock, "i_size: "LPU64" -> stripe number %u -> kms "LPU64,
- (__u64)llu_i2stat(inode)->st_size, stripe,lvb->lvb_size);
- iput:
- I_RELE(inode);
- out:
- /* These errors are normal races, so we don't want to fill the console
- * with messages by calling ptlrpc_error() */
- if (rc == -ELDLM_NO_LOCK_DATA)
- lustre_pack_reply(req, 1, NULL, NULL);
-
- req->rq_status = rc;
- return rc;
-}
-