- int op, credits;
- for (op = 0; op < DTO_NR; op++) {
- credits = mdd_child_ops(mdd)->dt_credit_get(env, mdd->mdd_child,
- op);
- LASSERT(credits > 0);
- dto_txn_credits[op] = credits;
- }
-}
-
-int mdd_txn_init_credits(const struct lu_env *env, struct mdd_device *mdd)
-{
- int op;
-
- /* Init credits for each ops. */
- mdd_txn_init_dto_credits(env, mdd, dto_txn_credits);
-
- /* Calculate the mdd credits. */
- for (op = MDD_TXN_OBJECT_DESTROY_OP; op < MDD_TXN_LAST_OP; op++) {
- int *c = &mdd->mdd_tod[op].mod_credits;
- int *dt = dto_txn_credits;
- mdd->mdd_tod[op].mod_op = op;
- switch(op) {
- case MDD_TXN_OBJECT_DESTROY_OP:
- /* Unused now */
- *c = dt[DTO_OBJECT_DELETE];
- break;
- case MDD_TXN_OBJECT_CREATE_OP:
- /* OI INSERT + CREATE OBJECT */
- *c = dt[DTO_INDEX_INSERT] +
- dt[DTO_OBJECT_CREATE];
- break;
- case MDD_TXN_ATTR_SET_OP:
- /* ATTR set + XATTR(lsm, lmv) set */
- *c = dt[DTO_ATTR_SET_BASE] +
- dt[DTO_XATTR_SET];
- break;
- case MDD_TXN_XATTR_SET_OP:
- *c = dt[DTO_XATTR_SET];
- break;
- case MDD_TXN_INDEX_INSERT_OP:
- *c = dt[DTO_INDEX_INSERT];
- break;
- case MDD_TXN_INDEX_DELETE_OP:
- *c = dt[DTO_INDEX_DELETE];
- break;
- case MDD_TXN_LINK_OP:
- *c = dt[DTO_INDEX_INSERT];
- break;
- case MDD_TXN_UNLINK_OP:
- /* delete index + Unlink log +
- * mdd orphan handling */
- *c = dt[DTO_INDEX_DELETE] +
- dt[DTO_INDEX_DELETE] +
- dt[DTO_INDEX_INSERT] * 2 +
- dt[DTO_XATTR_SET] * 3;
- break;
- case MDD_TXN_RENAME_OP:
- /* 2 delete index + 1 insert + Unlink log */
- *c = 2 * dt[DTO_INDEX_DELETE] +
- dt[DTO_INDEX_INSERT] +
- dt[DTO_INDEX_DELETE] +
- dt[DTO_INDEX_INSERT] * 2 +
- dt[DTO_XATTR_SET] * 3;
- break;
- case MDD_TXN_RENAME_TGT_OP:
- /* index insert + index delete */
- *c = dt[DTO_INDEX_DELETE] +
- dt[DTO_INDEX_INSERT] +
- dt[DTO_INDEX_DELETE] +
- dt[DTO_INDEX_INSERT] * 2 +
- dt[DTO_XATTR_SET] * 3;
- break;
- case MDD_TXN_CREATE_DATA_OP:
- /* same as set xattr(lsm) */
- *c = dt[DTO_XATTR_SET];
- break;
- case MDD_TXN_MKDIR_OP:
- /* INDEX INSERT + OI INSERT +
- * CREATE_OBJECT_CREDITS
- * SET_MD CREDITS is already counted in
- * CREATE_OBJECT CREDITS
- */
- *c = 2 * dt[DTO_INDEX_INSERT] +
- dt[DTO_OBJECT_CREATE];
- break;
- default:
- CERROR("Invalid op %d init its credit\n", op);
- LBUG();
- }
- }
- RETURN(0);
-}
-
-struct thandle* mdd_trans_start(const struct lu_env *env,
- struct mdd_device *mdd)
-{
- struct txn_param *p = &mdd_env_info(env)->mti_param;
- struct thandle *th;
-
- th = mdd_child_ops(mdd)->dt_trans_start(env, mdd->mdd_child, p);
- return th;
+ struct mdd_device *mdd = data;
+ struct lu_env *env = NULL;
+ int rc;
+ struct llog_ctxt *ctxt;
+
+ ENTRY;
+
+ mdd->mdd_cl.mc_gc_task = current;
+
+ CDEBUG(D_HA, "%s: ChangeLog garbage collect thread start with PID %d\n",
+ mdd2obd_dev(mdd)->obd_name, current->pid);
+
+ OBD_ALLOC_PTR(env);
+ if (!env)
+ GOTO(out, rc = -ENOMEM);
+
+ rc = lu_env_init(env, LCT_MD_THREAD);
+ if (rc)
+ GOTO(out_free, rc);
+
+ ctxt = llog_get_context(mdd2obd_dev(mdd),
+ LLOG_CHANGELOG_USER_ORIG_CTXT);
+ if (!ctxt)
+ GOTO(out_env, rc = -ENXIO);
+ if (!(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT))
+ GOTO(out_ctxt, rc = -ENXIO);
+
+ for (;;) {
+ __u32 time_now = (__u32)ktime_get_real_seconds();
+ struct mdd_changelog_gc mcgc = {
+ .mcgc_mdd = mdd,
+ .mcgc_minrec = mdd->mdd_cl.mc_index,
+ .mcgc_name = { 0 },
+ };
+
+ rc = llog_cat_process(env, ctxt->loc_handle,
+ mdd_changelog_gc_cb, &mcgc, 0, 0);
+ if (rc)
+ GOTO(out_ctxt, rc);
+
+ if (!mcgc.mcgc_name[0])
+ break;
+
+ CWARN("%s: force deregister of changelog user %s idle for %us with %llu unprocessed records\n",
+ mdd2obd_dev(mdd)->obd_name, mcgc.mcgc_name,
+ time_now - mcgc.mcgc_mintime,
+ mdd->mdd_cl.mc_index - mcgc.mcgc_minrec);
+
+ mdd_changelog_user_purge(env, mdd, mcgc.mcgc_id);
+
+ if (mdd->mdd_changelog_emrg_gc &&
+ mdd_changelog_is_space_safe(env, mdd, ctxt->loc_handle, 0))
+ mdd->mdd_changelog_emrg_gc = false;
+
+ if (kthread_should_stop())
+ GOTO(out_ctxt, rc = 0);
+ }
+ EXIT;
+out_ctxt:
+ llog_ctxt_put(ctxt);
+out_env:
+ lu_env_fini(env);
+out_free:
+ OBD_FREE_PTR(env);
+out:
+ spin_lock(&mdd->mdd_cl.mc_lock);
+ mdd->mdd_cl.mc_gc_task = MDD_CHLG_GC_NONE;
+ spin_unlock(&mdd->mdd_cl.mc_lock);
+
+ return rc;