Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / lustre / lustre / lmv / lmv_internal.h

diff --git a/kernel/drivers/staging/lustre/lustre/lmv/lmv_internal.h b/kernel/drivers/staging/lustre/lustre/lmv/lmv_internal.h
new file mode 100644 (file)
index 0000000..852d787
--- /dev/null
+++ b/kernel/drivers/staging/lustre/lustre/lmv/lmv_internal.h
@@ -0,0 +1,157 @@
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
+#ifndef _LMV_INTERNAL_H_
+#define _LMV_INTERNAL_H_
+
+#include "../include/lustre/lustre_idl.h"
+#include "../include/obd.h"
+
+#define LMV_MAX_TGT_COUNT 128
+
+#define lmv_init_lock(lmv)   mutex_lock(&lmv->init_mutex)
+#define lmv_init_unlock(lmv) mutex_unlock(&lmv->init_mutex)
+
+#define LL_IT2STR(it)                                  \
+       ((it) ? ldlm_it2str((it)->it_op) : "0")
+
+int lmv_check_connect(struct obd_device *obd);
+
+int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
+                   void *lmm, int lmmsize, struct lookup_intent *it,
+                   int flags, struct ptlrpc_request **reqp,
+                   ldlm_blocking_callback cb_blocking,
+                   __u64 extra_lock_flags);
+
+int lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data,
+                     void *lmm, int lmmsize, struct lookup_intent *it,
+                     int flags, struct ptlrpc_request **reqp,
+                     ldlm_blocking_callback cb_blocking,
+                     __u64 extra_lock_flags);
+
+int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data,
+                   void *lmm, int lmmsize, struct lookup_intent *it,
+                   int flags, struct ptlrpc_request **reqp,
+                   ldlm_blocking_callback cb_blocking,
+                   __u64 extra_lock_flags);
+
+int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
+                    void *, int);
+int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds);
+int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds);
+int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
+                 struct md_op_data *op_data);
+
+static inline struct lmv_stripe_md *lmv_get_mea(struct ptlrpc_request *req)
+{
+       struct mdt_body  *body;
+       struct lmv_stripe_md    *mea;
+
+       LASSERT(req != NULL);
+
+       body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
+
+       if (!body || !S_ISDIR(body->mode) || !body->eadatasize)
+               return NULL;
+
+       mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD,
+                                          body->eadatasize);
+       LASSERT(mea != NULL);
+
+       if (mea->mea_count == 0)
+               return NULL;
+       if (mea->mea_magic != MEA_MAGIC_LAST_CHAR &&
+               mea->mea_magic != MEA_MAGIC_ALL_CHARS &&
+               mea->mea_magic != MEA_MAGIC_HASH_SEGMENT)
+               return NULL;
+
+       return mea;
+}
+
+static inline int lmv_get_easize(struct lmv_obd *lmv)
+{
+       return sizeof(struct lmv_stripe_md) +
+               lmv->desc.ld_tgt_count *
+               sizeof(struct lu_fid);
+}
+
+static inline struct lmv_tgt_desc *
+lmv_get_target(struct lmv_obd *lmv, u32 mds)
+{
+       int count = lmv->desc.ld_tgt_count;
+       int i;
+
+       for (i = 0; i < count; i++) {
+               if (lmv->tgts[i] == NULL)
+                       continue;
+
+               if (lmv->tgts[i]->ltd_idx == mds)
+                       return lmv->tgts[i];
+       }
+
+       return ERR_PTR(-ENODEV);
+}
+
+static inline struct lmv_tgt_desc *
+lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid)
+{
+       u32 mds = 0;
+       int rc;
+
+       if (lmv->desc.ld_tgt_count > 1) {
+               rc = lmv_fld_lookup(lmv, fid, &mds);
+               if (rc)
+                       return ERR_PTR(rc);
+       }
+
+       return lmv_get_target(lmv, mds);
+}
+
+struct lmv_tgt_desc
+*lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
+               struct lu_fid *fid);
+/* lproc_lmv.c */
+#if defined(CONFIG_PROC_FS)
+void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars);
+#else
+static inline void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
+{
+       memset(lvars, 0, sizeof(*lvars));
+}
+#endif
+extern struct file_operations lmv_proc_target_fops;
+
+#endif