* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011 Whamcloud, Inc.
+ *
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <obd.h>
#include <obd_support.h>
#include <obd_class.h>
-#include <obd_echo.h>
#include <lustre_debug.h>
#include <lprocfs_status.h>
+#include <cl_object.h>
-static obd_id last_object_id;
+#include "echo_internal.h"
+
+/** \defgroup echo_client Echo Client
+ * @{
+ */
+
+struct echo_device {
+ struct cl_device ed_cl;
+ struct echo_client_obd *ed_ec;
+
+ struct cl_site ed_site_myself;
+ struct cl_site *ed_site;
+ struct lu_device *ed_next;
+ int ed_next_islov;
+};
+
+struct echo_object {
+ struct cl_object eo_cl;
+ struct cl_object_header eo_hdr;
+
+ struct echo_device *eo_dev;
+ cfs_list_t eo_obj_chain;
+ struct lov_stripe_md *eo_lsm;
+ cfs_atomic_t eo_npages;
+ int eo_deleted;
+};
+
+struct echo_object_conf {
+ struct cl_object_conf eoc_cl;
+ struct lov_stripe_md **eoc_md;
+};
+
+struct echo_page {
+ struct cl_page_slice ep_cl;
+ cfs_mutex_t ep_lock;
+ cfs_page_t *ep_vmpage;
+};
+
+struct echo_lock {
+ struct cl_lock_slice el_cl;
+ cfs_list_t el_chain;
+ struct echo_object *el_object;
+ __u64 el_cookie;
+ cfs_atomic_t el_refcount;
+};
+
+struct echo_io {
+ struct cl_io_slice ei_cl;
+};
#if 0
-static void
-echo_printk_object (char *msg, struct ec_object *eco)
+struct echo_req {
+ struct cl_req_slice er_cl;
+};
+#endif
+
+static int echo_client_setup(struct obd_device *obddev,
+ struct lustre_cfg *lcfg);
+static int echo_client_cleanup(struct obd_device *obddev);
+
+
+/** \defgroup echo_helpers Helper functions
+ * @{
+ */
+static inline struct echo_device *cl2echo_dev(const struct cl_device *dev)
{
- struct lov_stripe_md *lsm = eco->eco_lsm;
- int i;
+ return container_of0(dev, struct echo_device, ed_cl);
+}
+
+static inline struct cl_device *echo_dev2cl(struct echo_device *d)
+{
+ return &d->ed_cl;
+}
+
+static inline struct echo_device *obd2echo_dev(const struct obd_device *obd)
+{
+ return cl2echo_dev(lu2cl_dev(obd->obd_lu_dev));
+}
+
+static inline struct cl_object *echo_obj2cl(struct echo_object *eco)
+{
+ return &eco->eo_cl;
+}
+
+static inline struct echo_object *cl2echo_obj(const struct cl_object *o)
+{
+ return container_of(o, struct echo_object, eo_cl);
+}
- CDEBUG(D_INFO, "%s: object %p: "LPX64", refs %d%s: "LPX64"=%u!%u\n",
- msg, eco, eco->eco_id, eco->eco_refcount,
- eco->eco_deleted ? "(deleted) " : "",
- lsm->lsm_object_id, lsm->lsm_stripe_size,
- lsm->lsm_stripe_count);
+static inline struct echo_page *cl2echo_page(const struct cl_page_slice *s)
+{
+ return container_of(s, struct echo_page, ep_cl);
+}
- for (i = 0; i < lsm->lsm_stripe_count; i++)
- CDEBUG(D_INFO, "@%2u:"LPX64"\n",
- lsm->lsm_oinfo[i].loi_ost_idx,
- lsm->lsm_oinfo[i].loi_id);
+static inline struct echo_lock *cl2echo_lock(const struct cl_lock_slice *s)
+{
+ return container_of(s, struct echo_lock, el_cl);
}
+
+static inline struct cl_lock *echo_lock2cl(const struct echo_lock *ecl)
+{
+ return ecl->el_cl.cls_lock;
+}
+
+static struct lu_context_key echo_thread_key;
+static inline struct echo_thread_info *echo_env_info(const struct lu_env *env)
+{
+ struct echo_thread_info *info;
+ info = lu_context_key_get(&env->le_ctx, &echo_thread_key);
+ LASSERT(info != NULL);
+ return info;
+}
+
+static inline
+struct echo_object_conf *cl2echo_conf(const struct cl_object_conf *c)
+{
+ return container_of(c, struct echo_object_conf, eoc_cl);
+}
+
+static inline void lsm2fid(struct lov_stripe_md *lsm, struct lu_fid *fid)
+{
+ fid_zero(fid);
+ fid->f_seq = FID_SEQ_ECHO;
+ /* truncated to 32 bits by assignment */
+ fid->f_oid = lsm->lsm_object_id;
+ fid->f_ver = lsm->lsm_object_id >> 32;
+}
+/** @} echo_helpers */
+
+static struct echo_object *cl_echo_object_find(struct echo_device *d,
+ struct lov_stripe_md **lsm);
+static int cl_echo_object_put(struct echo_object *eco);
+static int cl_echo_enqueue (struct echo_object *eco, obd_off start,
+ obd_off end, int mode, __u64 *cookie);
+static int cl_echo_cancel (struct echo_device *d, __u64 cookie);
+static int cl_echo_object_brw(struct echo_object *eco, int rw, obd_off offset,
+ cfs_page_t **pages, int npages, int async);
+
+static struct echo_thread_info *echo_env_info(const struct lu_env *env);
+
+struct echo_thread_info {
+ struct echo_object_conf eti_conf;
+ struct lustre_md eti_md;
+
+ struct cl_2queue eti_queue;
+ struct cl_io eti_io;
+ struct cl_lock_descr eti_descr;
+ struct lu_fid eti_fid;
+};
+
+/* No session used right now */
+struct echo_session_info {
+ unsigned long dummy;
+};
+
+static cfs_mem_cache_t *echo_page_kmem;
+static cfs_mem_cache_t *echo_lock_kmem;
+static cfs_mem_cache_t *echo_object_kmem;
+static cfs_mem_cache_t *echo_thread_kmem;
+static cfs_mem_cache_t *echo_session_kmem;
+//static cfs_mem_cache_t *echo_req_kmem;
+
+static struct lu_kmem_descr echo_caches[] = {
+ {
+ .ckd_cache = &echo_page_kmem,
+ .ckd_name = "echo_page_kmem",
+ .ckd_size = sizeof (struct echo_page)
+ },
+ {
+ .ckd_cache = &echo_lock_kmem,
+ .ckd_name = "echo_lock_kmem",
+ .ckd_size = sizeof (struct echo_lock)
+ },
+ {
+ .ckd_cache = &echo_object_kmem,
+ .ckd_name = "echo_object_kmem",
+ .ckd_size = sizeof (struct echo_object)
+ },
+ {
+ .ckd_cache = &echo_thread_kmem,
+ .ckd_name = "echo_thread_kmem",
+ .ckd_size = sizeof (struct echo_thread_info)
+ },
+ {
+ .ckd_cache = &echo_session_kmem,
+ .ckd_name = "echo_session_kmem",
+ .ckd_size = sizeof (struct echo_session_info)
+ },
+#if 0
+ {
+ .ckd_cache = &echo_req_kmem,
+ .ckd_name = "echo_req_kmem",
+ .ckd_size = sizeof (struct echo_req)
+ },
#endif
+ {
+ .ckd_cache = NULL
+ }
+};
+
+/** \defgroup echo_page Page operations
+ *
+ * Echo page operations.
+ *
+ * @{
+ */
+cfs_page_t *echo_page_vmpage(const struct lu_env *env,
+ const struct cl_page_slice *slice)
+{
+ return cl2echo_page(slice)->ep_vmpage;
+}
+
+static int echo_page_own(const struct lu_env *env,
+ const struct cl_page_slice *slice,
+ struct cl_io *io, int nonblock)
+{
+ struct echo_page *ep = cl2echo_page(slice);
+
+ if (!nonblock)
+ cfs_mutex_lock(&ep->ep_lock);
+ else if (!cfs_mutex_trylock(&ep->ep_lock))
+ return -EAGAIN;
+ return 0;
+}
+
+static void echo_page_disown(const struct lu_env *env,
+ const struct cl_page_slice *slice,
+ struct cl_io *io)
+{
+ struct echo_page *ep = cl2echo_page(slice);
+
+ LASSERT(cfs_mutex_is_locked(&ep->ep_lock));
+ cfs_mutex_unlock(&ep->ep_lock);
+}
+
+static void echo_page_discard(const struct lu_env *env,
+ const struct cl_page_slice *slice,
+ struct cl_io *unused)
+{
+ cl_page_delete(env, slice->cpl_page);
+}
+
+static int echo_page_is_vmlocked(const struct lu_env *env,
+ const struct cl_page_slice *slice)
+{
+ return cfs_mutex_is_locked(&cl2echo_page(slice)->ep_lock);
+}
+
+static void echo_page_completion(const struct lu_env *env,
+ const struct cl_page_slice *slice,
+ int ioret)
+{
+ LASSERT(slice->cpl_page->cp_sync_io != NULL);
+}
+
+static void echo_page_fini(const struct lu_env *env,
+ struct cl_page_slice *slice)
+{
+ struct echo_page *ep = cl2echo_page(slice);
+ struct echo_object *eco = cl2echo_obj(slice->cpl_obj);
+ cfs_page_t *vmpage = ep->ep_vmpage;
+ ENTRY;
+
+ cfs_atomic_dec(&eco->eo_npages);
+ page_cache_release(vmpage);
+ OBD_SLAB_FREE_PTR(ep, echo_page_kmem);
+ EXIT;
+}
+
+static int echo_page_prep(const struct lu_env *env,
+ const struct cl_page_slice *slice,
+ struct cl_io *unused)
+{
+ return 0;
+}
-static struct ec_object *
-echo_find_object_locked (struct obd_device *obd, obd_id id)
+static int echo_page_print(const struct lu_env *env,
+ const struct cl_page_slice *slice,
+ void *cookie, lu_printer_t printer)
{
- struct echo_client_obd *ec = &obd->u.echo_client;
- struct ec_object *eco = NULL;
- struct list_head *el;
+ struct echo_page *ep = cl2echo_page(slice);
+
+ (*printer)(env, cookie, LUSTRE_ECHO_CLIENT_NAME"-page@%p %d vm@%p\n",
+ ep, cfs_mutex_is_locked(&ep->ep_lock), ep->ep_vmpage);
+ return 0;
+}
+
+static const struct cl_page_operations echo_page_ops = {
+ .cpo_own = echo_page_own,
+ .cpo_disown = echo_page_disown,
+ .cpo_discard = echo_page_discard,
+ .cpo_vmpage = echo_page_vmpage,
+ .cpo_fini = echo_page_fini,
+ .cpo_print = echo_page_print,
+ .cpo_is_vmlocked = echo_page_is_vmlocked,
+ .io = {
+ [CRT_READ] = {
+ .cpo_prep = echo_page_prep,
+ .cpo_completion = echo_page_completion,
+ },
+ [CRT_WRITE] = {
+ .cpo_prep = echo_page_prep,
+ .cpo_completion = echo_page_completion,
+ }
+ }
+};
+/** @} echo_page */
+
+/** \defgroup echo_lock Locking
+ *
+ * echo lock operations
+ *
+ * @{
+ */
+static void echo_lock_fini(const struct lu_env *env,
+ struct cl_lock_slice *slice)
+{
+ struct echo_lock *ecl = cl2echo_lock(slice);
+
+ LASSERT(cfs_list_empty(&ecl->el_chain));
+ OBD_SLAB_FREE_PTR(ecl, echo_lock_kmem);
+}
+
+static void echo_lock_delete(const struct lu_env *env,
+ const struct cl_lock_slice *slice)
+{
+ struct echo_lock *ecl = cl2echo_lock(slice);
+
+ LASSERT(cfs_list_empty(&ecl->el_chain));
+}
+
+static int echo_lock_fits_into(const struct lu_env *env,
+ const struct cl_lock_slice *slice,
+ const struct cl_lock_descr *need,
+ const struct cl_io *unused)
+{
+ return 1;
+}
+
+static struct cl_lock_operations echo_lock_ops = {
+ .clo_fini = echo_lock_fini,
+ .clo_delete = echo_lock_delete,
+ .clo_fits_into = echo_lock_fits_into
+};
+
+/** @} echo_lock */
+
+/** \defgroup echo_cl_ops cl_object operations
+ *
+ * operations for cl_object
+ *
+ * @{
+ */
+static struct cl_page *echo_page_init(const struct lu_env *env,
+ struct cl_object *obj,
+ struct cl_page *page, cfs_page_t *vmpage)
+{
+ struct echo_page *ep;
+ ENTRY;
+
+ OBD_SLAB_ALLOC_PTR_GFP(ep, echo_page_kmem, CFS_ALLOC_IO);
+ if (ep != NULL) {
+ struct echo_object *eco = cl2echo_obj(obj);
+ ep->ep_vmpage = vmpage;
+ page_cache_get(vmpage);
+ cfs_mutex_init(&ep->ep_lock);
+ cl_page_slice_add(page, &ep->ep_cl, obj, &echo_page_ops);
+ cfs_atomic_inc(&eco->eo_npages);
+ }
+ RETURN(ERR_PTR(ep ? 0 : -ENOMEM));
+}
+
+static int echo_io_init(const struct lu_env *env, struct cl_object *obj,
+ struct cl_io *io)
+{
+ return 0;
+}
+
+static int echo_lock_init(const struct lu_env *env,
+ struct cl_object *obj, struct cl_lock *lock,
+ const struct cl_io *unused)
+{
+ struct echo_lock *el;
+ ENTRY;
+
+ OBD_SLAB_ALLOC_PTR_GFP(el, echo_lock_kmem, CFS_ALLOC_IO);
+ if (el != NULL) {
+ cl_lock_slice_add(lock, &el->el_cl, obj, &echo_lock_ops);
+ el->el_object = cl2echo_obj(obj);
+ CFS_INIT_LIST_HEAD(&el->el_chain);
+ cfs_atomic_set(&el->el_refcount, 0);
+ }
+ RETURN(el == NULL ? -ENOMEM : 0);
+}
+
+static int echo_conf_set(const struct lu_env *env, struct cl_object *obj,
+ const struct cl_object_conf *conf)
+{
+ return 0;
+}
+
+static const struct cl_object_operations echo_cl_obj_ops = {
+ .coo_page_init = echo_page_init,
+ .coo_lock_init = echo_lock_init,
+ .coo_io_init = echo_io_init,
+ .coo_conf_set = echo_conf_set
+};
+/** @} echo_cl_ops */
+
+/** \defgroup echo_lu_ops lu_object operations
+ *
+ * operations for echo lu object.
+ *
+ * @{
+ */
+static int echo_object_init(const struct lu_env *env, struct lu_object *obj,
+ const struct lu_object_conf *conf)
+{
+ const struct cl_object_conf *cconf = lu2cl_conf(conf);
+ struct echo_object_conf *econf = cl2echo_conf(cconf);
+ struct echo_device *ed = cl2echo_dev(lu2cl_dev(obj->lo_dev));
+ struct echo_client_obd *ec = ed->ed_ec;
+ struct echo_object *eco = cl2echo_obj(lu2cl(obj));
+ ENTRY;
+
+ if (ed->ed_next) {
+ struct lu_object *below;
+ struct lu_device *under;
+
+ under = ed->ed_next;
+ below = under->ld_ops->ldo_object_alloc(env, obj->lo_header,
+ under);
+ if (below == NULL)
+ RETURN(-ENOMEM);
+ lu_object_add(obj, below);
+ }
+
+ LASSERT(econf->eoc_md);
+ eco->eo_lsm = *econf->eoc_md;
+ eco->eo_dev = ed;
+ cfs_atomic_set(&eco->eo_npages, 0);
+
+ /* clear the lsm pointer so that it won't get freed. */
+ *econf->eoc_md = NULL;
+
+ cfs_spin_lock(&ec->ec_lock);
+ cfs_list_add_tail(&eco->eo_obj_chain, &ec->ec_objects);
+ cfs_spin_unlock(&ec->ec_lock);
+
+ RETURN(0);
+}
+
+static void echo_object_free(const struct lu_env *env, struct lu_object *obj)
+{
+ struct echo_object *eco = cl2echo_obj(lu2cl(obj));
+ struct echo_client_obd *ec = eco->eo_dev->ed_ec;
+ struct lov_stripe_md *lsm = eco->eo_lsm;
+ ENTRY;
+
+ LASSERT(cfs_atomic_read(&eco->eo_npages) == 0);
+
+ cfs_spin_lock(&ec->ec_lock);
+ cfs_list_del_init(&eco->eo_obj_chain);
+ cfs_spin_unlock(&ec->ec_lock);
+
+ lu_object_fini(obj);
+ lu_object_header_fini(obj->lo_header);
+
+ if (lsm)
+ obd_free_memmd(ec->ec_exp, &lsm);
+ OBD_SLAB_FREE_PTR(eco, echo_object_kmem);
+ EXIT;
+}
+
+static int echo_object_print(const struct lu_env *env, void *cookie,
+ lu_printer_t p, const struct lu_object *o)
+{
+ struct echo_object *obj = cl2echo_obj(lu2cl(o));
+
+ return (*p)(env, cookie, "echoclient-object@%p", obj);
+}
+
+
+static const struct lu_object_operations echo_lu_obj_ops = {
+ .loo_object_init = echo_object_init,
+ .loo_object_delete = NULL,
+ .loo_object_release = NULL,
+ .loo_object_free = echo_object_free,
+ .loo_object_print = echo_object_print,
+ .loo_object_invariant = NULL
+};
+/** @} echo_lu_ops */
+
+/** \defgroup echo_lu_dev_ops lu_device operations
+ *
+ * Operations for echo lu device.
+ *
+ * @{
+ */
+static struct lu_object *echo_object_alloc(const struct lu_env *env,
+ const struct lu_object_header *hdr,
+ struct lu_device *dev)
+{
+ struct echo_object *eco;
+ struct lu_object *obj = NULL;
+ ENTRY;
+
+ /* we're the top dev. */
+ LASSERT(hdr == NULL);
+ OBD_SLAB_ALLOC_PTR_GFP(eco, echo_object_kmem, CFS_ALLOC_IO);
+ if (eco != NULL) {
+ struct cl_object_header *hdr = &eco->eo_hdr;
+
+ obj = &echo_obj2cl(eco)->co_lu;
+ cl_object_header_init(hdr);
+ lu_object_init(obj, &hdr->coh_lu, dev);
+ lu_object_add_top(&hdr->coh_lu, obj);
+
+ eco->eo_cl.co_ops = &echo_cl_obj_ops;
+ obj->lo_ops = &echo_lu_obj_ops;
+ }
+ RETURN(obj);
+}
+
+static struct lu_device_operations echo_device_lu_ops = {
+ .ldo_object_alloc = echo_object_alloc,
+};
+/** @} echo_lu_dev_ops */
+
+static struct cl_device_operations echo_device_cl_ops = {
+};
+
+/** \defgroup echo_init Setup and teardown
+ *
+ * Init and fini functions for echo client.
+ *
+ * @{
+ */
+static int echo_site_init(const struct lu_env *env, struct echo_device *ed)
+{
+ struct cl_site *site = &ed->ed_site_myself;
+ int rc;
+
+ /* initialize site */
+ rc = cl_site_init(site, &ed->ed_cl);
+ if (rc) {
+ CERROR("Cannot initilize site for echo client(%d)\n", rc);
+ return rc;
+ }
+
+ rc = lu_site_init_finish(&site->cs_lu);
+ if (rc)
+ return rc;
+
+ ed->ed_site = site;
+ return 0;
+}
+
+static void echo_site_fini(const struct lu_env *env, struct echo_device *ed)
+{
+ if (ed->ed_site) {
+ cl_site_fini(ed->ed_site);
+ ed->ed_site = NULL;
+ }
+}
+
+static void *echo_thread_key_init(const struct lu_context *ctx,
+ struct lu_context_key *key)
+{
+ struct echo_thread_info *info;
+
+ OBD_SLAB_ALLOC_PTR_GFP(info, echo_thread_kmem, CFS_ALLOC_IO);
+ if (info == NULL)
+ info = ERR_PTR(-ENOMEM);
+ return info;
+}
+
+static void echo_thread_key_fini(const struct lu_context *ctx,
+ struct lu_context_key *key, void *data)
+{
+ struct echo_thread_info *info = data;
+ OBD_SLAB_FREE_PTR(info, echo_thread_kmem);
+}
+
+static void echo_thread_key_exit(const struct lu_context *ctx,
+ struct lu_context_key *key, void *data)
+{
+}
+
+static struct lu_context_key echo_thread_key = {
+ .lct_tags = LCT_CL_THREAD,
+ .lct_init = echo_thread_key_init,
+ .lct_fini = echo_thread_key_fini,
+ .lct_exit = echo_thread_key_exit
+};
+
+static void *echo_session_key_init(const struct lu_context *ctx,
+ struct lu_context_key *key)
+{
+ struct echo_session_info *session;
+
+ OBD_SLAB_ALLOC_PTR_GFP(session, echo_session_kmem, CFS_ALLOC_IO);
+ if (session == NULL)
+ session = ERR_PTR(-ENOMEM);
+ return session;
+}
+
+static void echo_session_key_fini(const struct lu_context *ctx,
+ struct lu_context_key *key, void *data)
+{
+ struct echo_session_info *session = data;
+ OBD_SLAB_FREE_PTR(session, echo_session_kmem);
+}
+
+static void echo_session_key_exit(const struct lu_context *ctx,
+ struct lu_context_key *key, void *data)
+{
+}
+
+static struct lu_context_key echo_session_key = {
+ .lct_tags = LCT_SESSION,
+ .lct_init = echo_session_key_init,
+ .lct_fini = echo_session_key_fini,
+ .lct_exit = echo_session_key_exit
+};
+
+LU_TYPE_INIT_FINI(echo, &echo_thread_key, &echo_session_key);
+
+static struct lu_device *echo_device_alloc(const struct lu_env *env,
+ struct lu_device_type *t,
+ struct lustre_cfg *cfg)
+{
+ struct lu_device *next;
+ struct echo_device *ed;
+ struct cl_device *cd;
+ struct obd_device *obd = NULL; /* to keep compiler happy */
+ struct obd_device *tgt;
+ const char *tgt_type_name;
+ int rc;
+ int cleanup = 0;
+ ENTRY;
+
+ OBD_ALLOC_PTR(ed);
+ if (ed == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ cleanup = 1;
+ cd = &ed->ed_cl;
+ rc = cl_device_init(cd, t);
+ if (rc)
+ GOTO(out, rc);
+
+ cd->cd_lu_dev.ld_ops = &echo_device_lu_ops;
+ cd->cd_ops = &echo_device_cl_ops;
+
+ cleanup = 2;
+ rc = echo_site_init(env, ed);
+ if (rc)
+ GOTO(out, rc);
+
+ cleanup = 3;
+ obd = class_name2obd(lustre_cfg_string(cfg, 0));
+ LASSERT(obd != NULL);
+ rc = echo_client_setup(obd, cfg);
+ if (rc)
+ GOTO(out, rc);
+ ed->ed_ec = &obd->u.echo_client;
+
+ cleanup = 4;
+ tgt = class_name2obd(lustre_cfg_string(cfg, 1));
+ LASSERT(tgt != NULL);
+ next = tgt->obd_lu_dev;
+ if (next != NULL && !lu_device_is_cl(next))
+ next = NULL;
+
+ /*
+ * if echo client is to be stacked upon ost device, the next is NULL
+ * since ost is not a clio device so far
+ */
+ tgt_type_name = tgt->obd_type->typ_name;
+ if (next != NULL) {
+ LASSERT(next != NULL);
+ if (next->ld_site != NULL)
+ GOTO(out, rc = -EBUSY);
+
+ next->ld_site = &ed->ed_site->cs_lu;
+ rc = next->ld_type->ldt_ops->ldto_device_init(env, next,
+ next->ld_type->ldt_name, NULL);
+ if (rc)
+ GOTO(out, rc);
+
+ /* Trikcy case, I have to determine the obd type since clio
+ * uses the different parameters to initialize objects for
+ * lov & osc.
+ */
+ if (strcmp(tgt_type_name, LUSTRE_LOV_NAME) == 0)
+ ed->ed_next_islov = 1;
+ else
+ LASSERT(strcmp(tgt_type_name, LUSTRE_OSC_NAME) == 0);
+ } else
+ LASSERT(strcmp(tgt_type_name, LUSTRE_OST_NAME) == 0);
+
+ ed->ed_next = next;
+ RETURN(&cd->cd_lu_dev);
+
+out:
+ switch(cleanup) {
+ case 4: {
+ int rc2;
+ rc2 = echo_client_cleanup(obd);
+ if (rc2)
+ CERROR("Cleanup obd device %s error(%d)\n",
+ obd->obd_name, rc2);
+ }
+
+ case 3:
+ echo_site_fini(env, ed);
+ case 2:
+ cl_device_fini(&ed->ed_cl);
+ case 1:
+ OBD_FREE_PTR(ed);
+ case 0:
+ default:
+ break;
+ }
+ return(ERR_PTR(rc));
+}
+
+static int echo_device_init(const struct lu_env *env, struct lu_device *d,
+ const char *name, struct lu_device *next)
+{
+ LBUG();
+ return 0;
+}
+
+static struct lu_device *echo_device_fini(const struct lu_env *env,
+ struct lu_device *d)
+{
+ struct echo_device *ed = cl2echo_dev(lu2cl_dev(d));
+ struct lu_device *next = ed->ed_next;
+
+ while (next)
+ next = next->ld_type->ldt_ops->ldto_device_fini(env, next);
+ return NULL;
+}
+
+static void echo_lock_release(const struct lu_env *env,
+ struct echo_lock *ecl,
+ int still_used)
+{
+ struct cl_lock *clk = echo_lock2cl(ecl);
+
+ cl_lock_get(clk);
+ cl_unuse(env, clk);
+ cl_lock_release(env, clk, "ec enqueue", ecl->el_object);
+ if (!still_used) {
+ cl_lock_mutex_get(env, clk);
+ cl_lock_cancel(env, clk);
+ cl_lock_delete(env, clk);
+ cl_lock_mutex_put(env, clk);
+ }
+ cl_lock_put(env, clk);
+}
+
+static struct lu_device *echo_device_free(const struct lu_env *env,
+ struct lu_device *d)
+{
+ struct echo_device *ed = cl2echo_dev(lu2cl_dev(d));
+ struct echo_client_obd *ec = ed->ed_ec;
+ struct echo_object *eco;
+ struct lu_device *next = ed->ed_next;
+
+ CDEBUG(D_INFO, "echo device:%p is going to be freed, next = %p\n",
+ ed, next);
+
+ LASSERT(ed->ed_site);
+ lu_site_purge(env, &ed->ed_site->cs_lu, -1);
+
+ /* check if there are objects still alive.
+ * It shouldn't have any object because lu_site_purge would cleanup
+ * all of cached objects. Anyway, probably the echo device is being
+ * parallelly accessed.
+ */
+ cfs_spin_lock(&ec->ec_lock);
+ cfs_list_for_each_entry(eco, &ec->ec_objects, eo_obj_chain)
+ eco->eo_deleted = 1;
+ cfs_spin_unlock(&ec->ec_lock);
+
+ /* purge again */
+ lu_site_purge(env, &ed->ed_site->cs_lu, -1);
+
+ CDEBUG(D_INFO,
+ "Waiting for the reference of echo object to be dropped\n");
+
+ /* Wait for the last reference to be dropped. */
+ cfs_spin_lock(&ec->ec_lock);
+ while (!cfs_list_empty(&ec->ec_objects)) {
+ cfs_spin_unlock(&ec->ec_lock);
+ CERROR("echo_client still has objects at cleanup time, "
+ "wait for 1 second\n");
+ cfs_schedule_timeout_and_set_state(CFS_TASK_UNINT,
+ cfs_time_seconds(1));
+ cfs_spin_lock(&ec->ec_lock);
+ }
+ cfs_spin_unlock(&ec->ec_lock);
+
+ LASSERT(cfs_list_empty(&ec->ec_locks));
+
+ CDEBUG(D_INFO, "No object exists, exiting...\n");
+
+ echo_client_cleanup(d->ld_obd);
+
+ while (next)
+ next = next->ld_type->ldt_ops->ldto_device_free(env, next);
+
+ LASSERT(ed->ed_site == lu2cl_site(d->ld_site));
+ echo_site_fini(env, ed);
+ cl_device_fini(&ed->ed_cl);
+ OBD_FREE_PTR(ed);
+
+ return NULL;
+}
+
+static const struct lu_device_type_operations echo_device_type_ops = {
+ .ldto_init = echo_type_init,
+ .ldto_fini = echo_type_fini,
+
+ .ldto_start = echo_type_start,
+ .ldto_stop = echo_type_stop,
+
+ .ldto_device_alloc = echo_device_alloc,
+ .ldto_device_free = echo_device_free,
+ .ldto_device_init = echo_device_init,
+ .ldto_device_fini = echo_device_fini
+};
+
+static struct lu_device_type echo_device_type = {
+ .ldt_tags = LU_DEVICE_CL,
+ .ldt_name = LUSTRE_ECHO_CLIENT_NAME,
+ .ldt_ops = &echo_device_type_ops,
+ .ldt_ctx_tags = LCT_CL_THREAD
+};
+/** @} echo_init */
+
+/** \defgroup echo_exports Exported operations
+ *
+ * exporting functions to echo client
+ *
+ * @{
+ */
+
+/* Interfaces to echo client obd device */
+static struct echo_object *cl_echo_object_find(struct echo_device *d,
+ struct lov_stripe_md **lsmp)
+{
+ struct lu_env *env;
+ struct echo_thread_info *info;
+ struct echo_object_conf *conf;
+ struct lov_stripe_md *lsm;
+ struct echo_object *eco;
+ struct cl_object *obj;
+ struct lu_fid *fid;
+ int refcheck;
+ ENTRY;
+
+ LASSERT(lsmp);
+ lsm = *lsmp;
+ LASSERT(lsm);
+ LASSERT(lsm->lsm_object_id);
+
+ /* Never return an object if the obd is to be freed. */
+ if (echo_dev2cl(d)->cd_lu_dev.ld_obd->obd_stopping)
+ RETURN(ERR_PTR(-ENODEV));
+
+ env = cl_env_get(&refcheck);
+ if (IS_ERR(env))
+ RETURN((void *)env);
+
+ info = echo_env_info(env);
+ conf = &info->eti_conf;
+ if (d->ed_next) {
+ if (!d->ed_next_islov) {
+ struct lov_oinfo *oinfo = lsm->lsm_oinfo[0];
+ LASSERT(oinfo != NULL);
+ oinfo->loi_id = lsm->lsm_object_id;
+ oinfo->loi_seq = lsm->lsm_object_seq;
+ conf->eoc_cl.u.coc_oinfo = oinfo;
+ } else {
+ struct lustre_md *md;
+ md = &info->eti_md;
+ memset(md, 0, sizeof *md);
+ md->lsm = lsm;
+ conf->eoc_cl.u.coc_md = md;
+ }
+ }
+ conf->eoc_md = lsmp;
+
+ fid = &info->eti_fid;
+ lsm2fid(lsm, fid);
+
+ obj = cl_object_find(env, echo_dev2cl(d), fid, &conf->eoc_cl);
+ if (IS_ERR(obj))
+ GOTO(out, eco = (void*)obj);
+
+ eco = cl2echo_obj(obj);
+ if (eco->eo_deleted) {
+ cl_object_put(env, obj);
+ eco = ERR_PTR(-EAGAIN);
+ }
+
+out:
+ cl_env_put(env, &refcheck);
+ RETURN(eco);
+}
+
+static int cl_echo_object_put(struct echo_object *eco)
+{
+ struct lu_env *env;
+ struct cl_object *obj = echo_obj2cl(eco);
+ int refcheck;
+ ENTRY;
+
+ env = cl_env_get(&refcheck);
+ if (IS_ERR(env))
+ RETURN(PTR_ERR(env));
+
+ /* an external function to kill an object? */
+ if (eco->eo_deleted) {
+ struct lu_object_header *loh = obj->co_lu.lo_header;
+ LASSERT(&eco->eo_hdr == luh2coh(loh));
+ cfs_set_bit(LU_OBJECT_HEARD_BANSHEE, &loh->loh_flags);
+ }
+
+ cl_object_put(env, obj);
+ cl_env_put(env, &refcheck);
+ RETURN(0);
+}
+
+static int cl_echo_enqueue0(struct lu_env *env, struct echo_object *eco,
+ obd_off start, obd_off end, int mode,
+ __u64 *cookie , __u32 enqflags)
+{
+ struct cl_io *io;
+ struct cl_lock *lck;
+ struct cl_object *obj;
+ struct cl_lock_descr *descr;
+ struct echo_thread_info *info;
+ int rc = -ENOMEM;
+ ENTRY;
+
+ info = echo_env_info(env);
+ io = &info->eti_io;
+ descr = &info->eti_descr;
+ obj = echo_obj2cl(eco);
+
+ descr->cld_obj = obj;
+ descr->cld_start = cl_index(obj, start);
+ descr->cld_end = cl_index(obj, end);
+ descr->cld_mode = mode == LCK_PW ? CLM_WRITE : CLM_READ;
+ descr->cld_enq_flags = enqflags;
+ io->ci_obj = obj;
+
+ lck = cl_lock_request(env, io, descr, "ec enqueue", eco);
+ if (lck) {
+ struct echo_client_obd *ec = eco->eo_dev->ed_ec;
+ struct echo_lock *el;
+
+ rc = cl_wait(env, lck);
+ if (rc == 0) {
+ el = cl2echo_lock(cl_lock_at(lck, &echo_device_type));
+ cfs_spin_lock(&ec->ec_lock);
+ if (cfs_list_empty(&el->el_chain)) {
+ cfs_list_add(&el->el_chain, &ec->ec_locks);
+ el->el_cookie = ++ec->ec_unique;
+ }
+ cfs_atomic_inc(&el->el_refcount);
+ *cookie = el->el_cookie;
+ cfs_spin_unlock(&ec->ec_lock);
+ } else
+ cl_lock_release(env, lck, "ec enqueue", cfs_current());
+ }
+ RETURN(rc);
+}
+
+static int cl_echo_enqueue(struct echo_object *eco, obd_off start, obd_off end,
+ int mode, __u64 *cookie)
+{
+ struct echo_thread_info *info;
+ struct lu_env *env;
+ struct cl_io *io;
+ int refcheck;
+ int result;
+ ENTRY;
+
+ env = cl_env_get(&refcheck);
+ if (IS_ERR(env))
+ RETURN(PTR_ERR(env));
+
+ info = echo_env_info(env);
+ io = &info->eti_io;
+
+ result = cl_io_init(env, io, CIT_MISC, echo_obj2cl(eco));
+ if (result < 0)
+ GOTO(out, result);
+ LASSERT(result == 0);
+
+ result = cl_echo_enqueue0(env, eco, start, end, mode, cookie, 0);
+ cl_io_fini(env, io);
+
+ EXIT;
+out:
+ cl_env_put(env, &refcheck);
+ return result;
+}
+
+static int cl_echo_cancel0(struct lu_env *env, struct echo_device *ed,
+ __u64 cookie)
+{
+ struct echo_client_obd *ec = ed->ed_ec;
+ struct echo_lock *ecl = NULL;
+ cfs_list_t *el;
+ int found = 0, still_used = 0;
+ ENTRY;
+
+ LASSERT(ec != NULL);
+ cfs_spin_lock (&ec->ec_lock);
+ cfs_list_for_each (el, &ec->ec_locks) {
+ ecl = cfs_list_entry (el, struct echo_lock, el_chain);
+ CDEBUG(D_INFO, "ecl: %p, cookie: "LPX64"\n", ecl, ecl->el_cookie);
+ found = (ecl->el_cookie == cookie);
+ if (found) {
+ if (cfs_atomic_dec_and_test(&ecl->el_refcount))
+ cfs_list_del_init(&ecl->el_chain);
+ else
+ still_used = 1;
+ break;
+ }
+ }
+ cfs_spin_unlock (&ec->ec_lock);
+
+ if (!found)
+ RETURN(-ENOENT);
+
+ echo_lock_release(env, ecl, still_used);
+ RETURN(0);
+}
+
+static int cl_echo_cancel(struct echo_device *ed, __u64 cookie)
+{
+ struct lu_env *env;
+ int refcheck;
+ int rc;
+ ENTRY;
+
+ env = cl_env_get(&refcheck);
+ if (IS_ERR(env))
+ RETURN(PTR_ERR(env));
+
+ rc = cl_echo_cancel0(env, ed, cookie);
+
+ cl_env_put(env, &refcheck);
+ RETURN(rc);
+}
+
+static int cl_echo_async_brw(const struct lu_env *env, struct cl_io *io,
+ enum cl_req_type unused, struct cl_2queue *queue)
+{
+ struct cl_page *clp;
+ struct cl_page *temp;
+ int result = 0;
+ ENTRY;
+
+ cl_page_list_for_each_safe(clp, temp, &queue->c2_qin) {
+ int rc;
+ rc = cl_page_cache_add(env, io, clp, CRT_WRITE);
+ if (rc == 0)
+ continue;
+ result = result ?: rc;
+ }
+ RETURN(result);
+}
+
+static int cl_echo_object_brw(struct echo_object *eco, int rw, obd_off offset,
+ cfs_page_t **pages, int npages, int async)
+{
+ struct lu_env *env;
+ struct echo_thread_info *info;
+ struct cl_object *obj = echo_obj2cl(eco);
+ struct echo_device *ed = eco->eo_dev;
+ struct cl_2queue *queue;
+ struct cl_io *io;
+ struct cl_page *clp;
+ struct lustre_handle lh = { 0 };
+ int page_size = cl_page_size(obj);
+ int refcheck;
+ int rc;
+ int i;
+ ENTRY;
+
+ LASSERT((offset & ~CFS_PAGE_MASK) == 0);
+ LASSERT(ed->ed_next != NULL);
+ env = cl_env_get(&refcheck);
+ if (IS_ERR(env))
+ RETURN(PTR_ERR(env));
+
+ info = echo_env_info(env);
+ io = &info->eti_io;
+ queue = &info->eti_queue;
+
+ cl_2queue_init(queue);
+ rc = cl_io_init(env, io, CIT_MISC, obj);
+ if (rc < 0)
+ GOTO(out, rc);
+ LASSERT(rc == 0);
+
+
+ rc = cl_echo_enqueue0(env, eco, offset,
+ offset + npages * CFS_PAGE_SIZE - 1,
+ rw == READ ? LCK_PR : LCK_PW, &lh.cookie,
+ CEF_NEVER);
+ if (rc < 0)
+ GOTO(error_lock, rc);
+
+ for (i = 0; i < npages; i++) {
+ LASSERT(pages[i]);
+ clp = cl_page_find(env, obj, cl_index(obj, offset),
+ pages[i], CPT_TRANSIENT);
+ if (IS_ERR(clp)) {
+ rc = PTR_ERR(clp);
+ break;
+ }
+ LASSERT(clp->cp_type == CPT_TRANSIENT);
+
+ rc = cl_page_own(env, io, clp);
+ if (rc) {
+ LASSERT(clp->cp_state == CPS_FREEING);
+ cl_page_put(env, clp);
+ break;
+ }
+
+ cl_2queue_add(queue, clp);
+
+ /* drop the reference count for cl_page_find, so that the page
+ * will be freed in cl_2queue_fini. */
+ cl_page_put(env, clp);
+ cl_page_clip(env, clp, 0, page_size);
+
+ offset += page_size;
+ }
+
+ if (rc == 0) {
+ enum cl_req_type typ = rw == READ ? CRT_READ : CRT_WRITE;
+
+ async = async && (typ == CRT_WRITE);
+ if (async)
+ rc = cl_echo_async_brw(env, io, typ, queue);
+ else
+ rc = cl_io_submit_sync(env, io, typ, queue,
+ CRP_NORMAL, 0);
+ CDEBUG(D_INFO, "echo_client %s write returns %d\n",
+ async ? "async" : "sync", rc);
+ }
+
+ cl_echo_cancel0(env, ed, lh.cookie);
+ EXIT;
+error_lock:
+ cl_2queue_discard(env, io, queue);
+ cl_2queue_disown(env, io, queue);
+ cl_2queue_fini(env, queue);
+ cl_io_fini(env, io);
+out:
+ cl_env_put(env, &refcheck);
+ return rc;
+}
+/** @} echo_exports */
- list_for_each (el, &ec->ec_objects) {
- eco = list_entry (el, struct ec_object, eco_obj_chain);
- if (eco->eco_id == id)
- return (eco);
- }
- return (NULL);
-}
+static obd_id last_object_id;
static int
echo_copyout_lsm (struct lov_stripe_md *lsm, void *_ulsm, int ulsm_nob)
if (nob > ulsm_nob)
return (-EINVAL);
- if (copy_to_user (ulsm, lsm, sizeof(ulsm)))
+ if (cfs_copy_to_user (ulsm, lsm, sizeof(ulsm)))
return (-EFAULT);
for (i = 0; i < lsm->lsm_stripe_count; i++) {
- if (copy_to_user (ulsm->lsm_oinfo[i], lsm->lsm_oinfo[i],
- sizeof(lsm->lsm_oinfo[0])))
+ if (cfs_copy_to_user (ulsm->lsm_oinfo[i], lsm->lsm_oinfo[i],
+ sizeof(lsm->lsm_oinfo[0])))
return (-EFAULT);
}
return 0;
}
static int
-echo_copyin_lsm (struct obd_device *obd, struct lov_stripe_md *lsm,
+echo_copyin_lsm (struct echo_device *ed, struct lov_stripe_md *lsm,
void *ulsm, int ulsm_nob)
{
- struct echo_client_obd *ec = &obd->u.echo_client;
+ struct echo_client_obd *ec = ed->ed_ec;
int i;
if (ulsm_nob < sizeof (*lsm))
return (-EINVAL);
- if (copy_from_user (lsm, ulsm, sizeof (*lsm)))
+ if (cfs_copy_from_user (lsm, ulsm, sizeof (*lsm)))
return (-EFAULT);
if (lsm->lsm_stripe_count > ec->ec_nstripes ||
for (i = 0; i < lsm->lsm_stripe_count; i++) {
- if (copy_from_user(lsm->lsm_oinfo[i],
- ((struct lov_stripe_md *)ulsm)->lsm_oinfo[i],
- sizeof(lsm->lsm_oinfo[0])))
+ if (cfs_copy_from_user(lsm->lsm_oinfo[i],
+ ((struct lov_stripe_md *)ulsm)-> \
+ lsm_oinfo[i],
+ sizeof(lsm->lsm_oinfo[0])))
return (-EFAULT);
}
return (0);
}
-static struct ec_object *
-echo_allocate_object (struct obd_device *obd)
-{
- struct echo_client_obd *ec = &obd->u.echo_client;
- struct ec_object *eco;
- int rc;
-
- OBD_ALLOC(eco, sizeof (*eco));
- if (eco == NULL)
- return NULL;
-
- rc = obd_alloc_memmd(ec->ec_exp, &eco->eco_lsm);
- if (rc < 0) {
- OBD_FREE(eco, sizeof (*eco));
- return NULL;
- }
-
- eco->eco_device = obd;
- eco->eco_deleted = 0;
- eco->eco_refcount = 0;
- eco->eco_lsm->lsm_magic = LOV_MAGIC;
- /* leave stripe count 0 by default */
-
- return (eco);
-}
-
-static void
-echo_free_object (struct ec_object *eco)
-{
- struct obd_device *obd = eco->eco_device;
- struct echo_client_obd *ec = &obd->u.echo_client;
-
- LASSERT (eco->eco_refcount == 0);
- if (!eco->eco_lsm)
- CERROR("No object %s\n", obd->obd_name);
- else
- obd_free_memmd(ec->ec_exp, &eco->eco_lsm);
- OBD_FREE (eco, sizeof (*eco));
-}
-
-static int echo_create_object(struct obd_device *obd, int on_target,
+static int echo_create_object(struct echo_device *ed, int on_target,
struct obdo *oa, void *ulsm, int ulsm_nob,
struct obd_trans_info *oti)
{
- struct echo_client_obd *ec = &obd->u.echo_client;
- struct ec_object *eco2;
- struct ec_object *eco;
- struct lov_stripe_md *lsm;
+ struct echo_object *eco;
+ struct echo_client_obd *ec = ed->ed_ec;
+ struct lov_stripe_md *lsm = NULL;
int rc;
- int i, idx;
+ int created = 0;
+ ENTRY;
if ((oa->o_valid & OBD_MD_FLID) == 0 && /* no obj id */
(on_target || /* set_stripe */
ec->ec_nstripes != 0)) { /* LOV */
CERROR ("No valid oid\n");
- return (-EINVAL);
+ RETURN(-EINVAL);
}
- if (ulsm != NULL) {
- eco = echo_allocate_object (obd);
- if (eco == NULL)
- return (-ENOMEM);
+ rc = obd_alloc_memmd(ec->ec_exp, &lsm);
+ if (rc < 0) {
+ CERROR("Cannot allocate md, rc = %d\n", rc);
+ GOTO(failed, rc);
+ }
- lsm = eco->eco_lsm;
+ if (ulsm != NULL) {
+ int i, idx;
- rc = echo_copyin_lsm (obd, lsm, ulsm, ulsm_nob);
+ rc = echo_copyin_lsm (ed, lsm, ulsm, ulsm_nob);
if (rc != 0)
- goto failed;
-
- /* setup object ID here for !on_target and LOV hint */
- if ((oa->o_valid & OBD_MD_FLID) != 0)
- eco->eco_id = lsm->lsm_object_id = oa->o_id;
+ GOTO(failed, rc);
if (lsm->lsm_stripe_count == 0)
lsm->lsm_stripe_count = ec->ec_nstripes;
if (lsm->lsm_stripe_size == 0)
lsm->lsm_stripe_size = CFS_PAGE_SIZE;
- idx = ll_rand();
+ idx = cfs_rand();
/* setup stripes: indices + default ids if required */
for (i = 0; i < lsm->lsm_stripe_count; i++) {
lsm->lsm_oinfo[i]->loi_ost_idx =
(idx + i) % ec->ec_nstripes;
}
- } else {
- OBD_ALLOC(eco, sizeof(*eco));
- if (!eco)
- return (-ENOMEM);
- eco->eco_device = obd;
- lsm = NULL;
}
- if (oa->o_id == 0)
- oa->o_id = ++last_object_id;
+ /* setup object ID here for !on_target and LOV hint */
+ if (oa->o_valid & OBD_MD_FLID)
+ lsm->lsm_object_id = oa->o_id;
- if (on_target) {
- oa->o_gr = FILTER_GROUP_ECHO;
- oa->o_valid |= OBD_MD_FLGROUP;
+ if (lsm->lsm_object_id == 0)
+ lsm->lsm_object_id = ++last_object_id;
+ rc = 0;
+ if (on_target) {
+ /* Only echo objects are allowed to be created */
+ LASSERT((oa->o_valid & OBD_MD_FLGROUP) &&
+ (oa->o_seq == FID_SEQ_ECHO));
rc = obd_create(ec->ec_exp, oa, &lsm, oti);
- if (rc != 0)
- goto failed;
-
- /* See what object ID we were given */
- eco->eco_id = oa->o_id = lsm->lsm_object_id;
- oa->o_valid |= OBD_MD_FLID;
-
- LASSERT(eco->eco_lsm == NULL || eco->eco_lsm == lsm);
- eco->eco_lsm = lsm;
+ if (rc != 0) {
+ CERROR("Cannot create objects, rc = %d\n", rc);
+ GOTO(failed, rc);
+ }
+ created = 1;
}
- spin_lock (&ec->ec_lock);
+ /* See what object ID we were given */
+ oa->o_id = lsm->lsm_object_id;
+ oa->o_valid |= OBD_MD_FLID;
- eco2 = echo_find_object_locked (obd, oa->o_id);
- if (eco2 != NULL) { /* conflict */
- spin_unlock (&ec->ec_lock);
-
- CERROR ("Can't create object id "LPX64": id already exists%s\n",
- oa->o_id, on_target ? " (undoing create)" : "");
-
- if (on_target)
- obd_destroy(ec->ec_exp, oa, lsm, oti, NULL);
-
- rc = -EEXIST;
- goto failed;
- }
+ eco = cl_echo_object_find(ed, &lsm);
+ if (IS_ERR(eco))
+ GOTO(failed, rc = PTR_ERR(eco));
+ cl_echo_object_put(eco);
- list_add (&eco->eco_obj_chain, &ec->ec_objects);
- spin_unlock (&ec->ec_lock);
- CDEBUG (D_INFO,
- "created %p: "LPX64"=%u#%u@%u refs %d del %d\n",
- eco, eco->eco_id,
- eco->eco_lsm->lsm_stripe_size,
- eco->eco_lsm->lsm_stripe_count,
- eco->eco_lsm->lsm_oinfo[0]->loi_ost_idx,
- eco->eco_refcount, eco->eco_deleted);
- return (0);
+ CDEBUG(D_INFO, "oa->o_id = %lx\n", (long)oa->o_id);
+ EXIT;
failed:
- echo_free_object (eco);
- if (rc)
- CERROR("%s: err %d on create\n", obd->obd_name, rc);
+ if (created && rc)
+ obd_destroy(ec->ec_exp, oa, lsm, oti, NULL, NULL);
+ if (lsm)
+ obd_free_memmd(ec->ec_exp, &lsm);
+ if (rc)
+ CERROR("create object failed with rc = %d\n", rc);
return (rc);
}
-static int
-echo_get_object (struct ec_object **ecop, struct obd_device *obd,
- struct obdo *oa)
+static int echo_get_object(struct echo_object **ecop, struct echo_device *ed,
+ struct obdo *oa)
{
- struct echo_client_obd *ec = &obd->u.echo_client;
- struct ec_object *eco;
- struct ec_object *eco2;
+ struct echo_client_obd *ec = ed->ed_ec;
+ struct lov_stripe_md *lsm = NULL;
+ struct echo_object *eco;
int rc;
+ ENTRY;
if ((oa->o_valid & OBD_MD_FLID) == 0 ||
- oa->o_id == 0) /* disallow use of object id 0 */
+ oa->o_id == 0) /* disallow use of object id 0 */
{
CERROR ("No valid oid\n");
- return (-EINVAL);
- }
-
- spin_lock (&ec->ec_lock);
- eco = echo_find_object_locked (obd, oa->o_id);
- if (eco != NULL) {
- if (eco->eco_deleted) { /* being deleted */
- spin_unlock(&ec->ec_lock);/* (see comment in cleanup) */
- return (-EAGAIN);
- }
-
- eco->eco_refcount++;
- spin_unlock (&ec->ec_lock);
- *ecop = eco;
- CDEBUG (D_INFO,
- "found %p: "LPX64"=%u#%u@%u refs %d del %d\n",
- eco, eco->eco_id,
- eco->eco_lsm->lsm_stripe_size,
- eco->eco_lsm->lsm_stripe_count,
- eco->eco_lsm->lsm_oinfo[0]->loi_ost_idx,
- eco->eco_refcount, eco->eco_deleted);
- return (0);
+ RETURN(-EINVAL);
}
- spin_unlock (&ec->ec_lock);
-
- if (ec->ec_nstripes != 0) /* striping required */
- return (-ENOENT);
- eco = echo_allocate_object (obd);
- if (eco == NULL)
- return (-ENOMEM);
-
- eco->eco_id = eco->eco_lsm->lsm_object_id = oa->o_id;
+ rc = obd_alloc_memmd(ec->ec_exp, &lsm);
+ if (rc < 0)
+ RETURN(rc);
- spin_lock (&ec->ec_lock);
+ lsm->lsm_object_id = oa->o_id;
+ if (oa->o_valid & OBD_MD_FLGROUP)
+ lsm->lsm_object_seq = oa->o_seq;
+ else
+ lsm->lsm_object_seq = FID_SEQ_ECHO;
- eco2 = echo_find_object_locked (obd, oa->o_id);
- if (eco2 == NULL) { /* didn't race */
- list_add (&eco->eco_obj_chain, &ec->ec_objects);
- spin_unlock (&ec->ec_lock);
- eco->eco_refcount = 1;
+ rc = 0;
+ eco = cl_echo_object_find(ed, &lsm);
+ if (!IS_ERR(eco))
*ecop = eco;
- CDEBUG (D_INFO,
- "created %p: "LPX64"=%u#%u@%d refs %d del %d\n",
- eco, eco->eco_id,
- eco->eco_lsm->lsm_stripe_size,
- eco->eco_lsm->lsm_stripe_count,
- eco->eco_lsm->lsm_oinfo[0]->loi_ost_idx,
- eco->eco_refcount, eco->eco_deleted);
- return (0);
- }
-
- if (eco2->eco_deleted)
- rc = -EAGAIN; /* lose race */
- else {
- eco2->eco_refcount++; /* take existing */
- *ecop = eco2;
- rc = 0;
- LASSERT (eco2->eco_id == eco2->eco_lsm->lsm_object_id);
- CDEBUG (D_INFO,
- "found(2) %p: "LPX64"=%u#%u@%d refs %d del %d\n",
- eco2, eco2->eco_id,
- eco2->eco_lsm->lsm_stripe_size,
- eco2->eco_lsm->lsm_stripe_count,
- eco2->eco_lsm->lsm_oinfo[0]->loi_ost_idx,
- eco2->eco_refcount, eco2->eco_deleted);
- }
-
- spin_unlock (&ec->ec_lock);
-
- echo_free_object (eco);
- return (rc);
+ else
+ rc = PTR_ERR(eco);
+ if (lsm)
+ obd_free_memmd(ec->ec_exp, &lsm);
+ RETURN(rc);
}
-static void
-echo_put_object (struct ec_object *eco)
+static void echo_put_object(struct echo_object *eco)
{
- struct obd_device *obd = eco->eco_device;
- struct echo_client_obd *ec = &obd->u.echo_client;
-
- /* Release caller's ref on the object.
- * delete => mark for deletion when last ref goes
- */
-
- spin_lock (&ec->ec_lock);
-
- eco->eco_refcount--;
- LASSERT (eco->eco_refcount >= 0);
-
- CDEBUG(D_INFO, "put %p: "LPX64"=%u#%u@%d refs %d del %d\n",
- eco, eco->eco_id,
- eco->eco_lsm->lsm_stripe_size,
- eco->eco_lsm->lsm_stripe_count,
- eco->eco_lsm->lsm_oinfo[0]->loi_ost_idx,
- eco->eco_refcount, eco->eco_deleted);
-
- if (eco->eco_refcount != 0 || !eco->eco_deleted) {
- spin_unlock (&ec->ec_lock);
- return;
- }
-
- spin_unlock (&ec->ec_lock);
-
- /* NB leave obj in the object list. We must prevent anyone from
- * attempting to enqueue on this object number until we can be
- * sure there will be no more lock callbacks.
- */
- obd_cancel_unused(ec->ec_exp, eco->eco_lsm, 0, NULL);
-
- /* now we can let it go */
- spin_lock (&ec->ec_lock);
- list_del (&eco->eco_obj_chain);
- spin_unlock (&ec->ec_lock);
-
- LASSERT (eco->eco_refcount == 0);
-
- echo_free_object (eco);
+ if (cl_echo_object_put(eco))
+ CERROR("echo client: drop an object failed");
}
static void
return rc;
}
-static int echo_client_kbrw(struct obd_device *obd, int rw, struct obdo *oa,
- struct lov_stripe_md *lsm, obd_off offset,
- obd_size count, struct obd_trans_info *oti)
+static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
+ struct echo_object *eco, obd_off offset,
+ obd_size count, int async,
+ struct obd_trans_info *oti)
{
- struct echo_client_obd *ec = &obd->u.echo_client;
- struct obd_info oinfo = { { { 0 } } };
+ struct echo_client_obd *ec = ed->ed_ec;
+ struct lov_stripe_md *lsm = eco->eo_lsm;
obd_count npages;
struct brw_page *pga;
struct brw_page *pgp;
+ cfs_page_t **pages;
obd_off off;
int i;
int rc;
int verify;
int gfp_mask;
+ int brw_flags = 0;
+ ENTRY;
verify = ((oa->o_id) != ECHO_PERSISTENT_OBJID &&
(oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
if (count <= 0 ||
(count & (~CFS_PAGE_MASK)) != 0)
- return (-EINVAL);
+ RETURN(-EINVAL);
/* XXX think again with misaligned I/O */
npages = count >> CFS_PAGE_SHIFT;
+ if (rw == OBD_BRW_WRITE)
+ brw_flags = OBD_BRW_ASYNC;
+
OBD_ALLOC(pga, npages * sizeof(*pga));
if (pga == NULL)
- return (-ENOMEM);
+ RETURN(-ENOMEM);
+
+ OBD_ALLOC(pages, npages * sizeof(*pages));
+ if (pages == NULL) {
+ OBD_FREE(pga, npages * sizeof(*pga));
+ RETURN(-ENOMEM);
+ }
for (i = 0, pgp = pga, off = offset;
i < npages;
if (pgp->pg == NULL)
goto out;
+ pages[i] = pgp->pg;
pgp->count = CFS_PAGE_SIZE;
pgp->off = off;
- pgp->flag = 0;
+ pgp->flag = brw_flags;
if (verify)
echo_client_page_debug_setup(lsm, pgp->pg, rw,
oa->o_id, off, pgp->count);
}
- oinfo.oi_oa = oa;
- oinfo.oi_md = lsm;
- rc = obd_brw(rw, ec->ec_exp, &oinfo, npages, pga, oti);
+ if (ed->ed_next == NULL) {
+ struct obd_info oinfo = { { { 0 } } };
+ oinfo.oi_oa = oa;
+ oinfo.oi_md = lsm;
+ rc = obd_brw(rw, ec->ec_exp, &oinfo, npages, pga, oti);
+ } else
+ rc = cl_echo_object_brw(eco, rw, offset, pages, npages, async);
out:
if (rc != 0 || rw != OBD_BRW_READ)
OBD_PAGE_FREE(pgp->pg);
}
OBD_FREE(pga, npages * sizeof(*pga));
- return (rc);
-}
-
-struct echo_async_state;
-
-#define EAP_MAGIC 79277927
-struct echo_async_page {
- int eap_magic;
- cfs_page_t *eap_page;
- void *eap_cookie;
- obd_off eap_off;
- struct echo_async_state *eap_eas;
- struct list_head eap_item;
-};
-
-#define EAP_FROM_COOKIE(c) \
- (LASSERT(((struct echo_async_page *)(c))->eap_magic == EAP_MAGIC), \
- (struct echo_async_page *)(c))
-
-struct echo_async_state {
- spinlock_t eas_lock;
- obd_off eas_next_offset;
- obd_off eas_end_offset;
- int eas_in_flight;
- int eas_rc;
- cfs_waitq_t eas_waitq;
- struct list_head eas_avail;
- struct obdo eas_oa;
- struct lov_stripe_md *eas_lsm;
-};
-
-static int eas_should_wake(struct echo_async_state *eas)
-{
- int rc = 0;
-
- spin_lock(&eas->eas_lock);
- if (eas->eas_rc == 0 && !list_empty(&eas->eas_avail))
- rc = 1;
- spin_unlock(&eas->eas_lock);
- return rc;
-};
-
-static int ec_ap_make_ready(void *data, int cmd)
-{
- /* our pages are issued ready */
- LBUG();
- return 0;
-}
-static int ec_ap_refresh_count(void *data, int cmd)
-{
- /* our pages are issued with a stable count */
- LBUG();
- return CFS_PAGE_SIZE;
-}
-static void ec_ap_fill_obdo(void *data, int cmd, struct obdo *oa)
-{
- struct echo_async_page *eap = EAP_FROM_COOKIE(data);
-
- memcpy(oa, &eap->eap_eas->eas_oa, sizeof(*oa));
-}
-
-static int ec_ap_completion(void *data, int cmd, struct obdo *oa, int rc)
-{
- struct echo_async_page *eap = EAP_FROM_COOKIE(data);
- struct echo_async_state *eas;
-
- eas = eap->eap_eas;
-
- if (cmd == OBD_BRW_READ &&
- eas->eas_oa.o_id != ECHO_PERSISTENT_OBJID &&
- (eas->eas_oa.o_valid & OBD_MD_FLFLAGS) != 0 &&
- (eas->eas_oa.o_flags & OBD_FL_DEBUG_CHECK) != 0)
- echo_client_page_debug_check(eas->eas_lsm, eap->eap_page,
- eas->eas_oa.o_id, eap->eap_off,
- CFS_PAGE_SIZE);
-
- spin_lock(&eas->eas_lock);
- if (rc && !eas->eas_rc)
- eas->eas_rc = rc;
- eas->eas_in_flight--;
- list_add(&eap->eap_item, &eas->eas_avail);
- cfs_waitq_signal(&eas->eas_waitq);
- spin_unlock(&eas->eas_lock);
- return 0;
-}
-
-static struct obd_async_page_ops ec_async_page_ops = {
- .ap_make_ready = ec_ap_make_ready,
- .ap_refresh_count = ec_ap_refresh_count,
- .ap_fill_obdo = ec_ap_fill_obdo,
- .ap_completion = ec_ap_completion,
-};
-
-static int echo_client_async_page(struct obd_export *exp, int rw,
- struct obdo *oa, struct lov_stripe_md *lsm,
- obd_off offset, obd_size count,
- obd_size batching)
-{
- obd_count npages, i;
- struct echo_async_page *eap;
- struct echo_async_state eas;
- int rc = 0;
- struct echo_async_page **aps = NULL;
-
- ENTRY;
-#if 0
- int verify;
- int gfp_mask;
-
- verify = ((oa->o_id) != ECHO_PERSISTENT_OBJID &&
- (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
- (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
-
- gfp_mask = ((oa->o_id & 2) == 0) ? GFP_KERNEL : GFP_HIGHUSER;
-#endif
-
- LASSERT(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ);
-
- if (count <= 0 ||
- (count & (~CFS_PAGE_MASK)) != 0 ||
- (lsm != NULL &&
- lsm->lsm_object_id != oa->o_id))
- return (-EINVAL);
-
- /* XXX think again with misaligned I/O */
- npages = batching >> CFS_PAGE_SHIFT;
-
- memcpy(&eas.eas_oa, oa, sizeof(*oa));
- eas.eas_next_offset = offset;
- eas.eas_end_offset = offset + count;
- spin_lock_init(&eas.eas_lock);
- cfs_waitq_init(&eas.eas_waitq);
- eas.eas_in_flight = 0;
- eas.eas_rc = 0;
- eas.eas_lsm = lsm;
- CFS_INIT_LIST_HEAD(&eas.eas_avail);
-
- OBD_ALLOC(aps, npages * sizeof aps[0]);
- if (aps == NULL)
- return (-ENOMEM);
-
- /* prepare the group of pages that we're going to be keeping
- * in flight */
- for (i = 0; i < npages; i++) {
- cfs_page_t *page;
- OBD_PAGE_ALLOC(page, CFS_ALLOC_STD);
- if (page == NULL)
- GOTO(out, rc = -ENOMEM);
-
- OBD_ALLOC(eap, sizeof(*eap));
- if (eap == NULL) {
- OBD_PAGE_FREE(page);
- GOTO(out, rc = -ENOMEM);
- }
-
- eap->eap_magic = EAP_MAGIC;
- eap->eap_page = page;
- eap->eap_eas = &eas;
- list_add_tail(&eap->eap_item, &eas.eas_avail);
- aps[i] = eap;
- }
-
- /* first we spin queueing io and being woken by its completion */
- spin_lock(&eas.eas_lock);
- for(;;) {
- int rc;
-
- /* sleep until we have a page to send */
- spin_unlock(&eas.eas_lock);
- rc = wait_event_interruptible(eas.eas_waitq,
- eas_should_wake(&eas));
- spin_lock(&eas.eas_lock);
- if (rc && !eas.eas_rc)
- eas.eas_rc = rc;
- if (eas.eas_rc)
- break;
- if (list_empty(&eas.eas_avail))
- continue;
- eap = list_entry(eas.eas_avail.next, struct echo_async_page,
- eap_item);
- list_del(&eap->eap_item);
- spin_unlock(&eas.eas_lock);
-
- /* unbind the eap from its old page offset */
- if (eap->eap_cookie != NULL) {
- obd_teardown_async_page(exp, lsm, NULL,
- eap->eap_cookie);
- eap->eap_cookie = NULL;
- }
-
- eas.eas_next_offset += CFS_PAGE_SIZE;
- eap->eap_off = eas.eas_next_offset;
-
- rc = obd_prep_async_page(exp, lsm, NULL, eap->eap_page,
- eap->eap_off, &ec_async_page_ops,
- eap, &eap->eap_cookie, 1, NULL);
- if (rc) {
- spin_lock(&eas.eas_lock);
- eas.eas_rc = rc;
- break;
- }
-
- if (oa->o_id != ECHO_PERSISTENT_OBJID &&
- (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
- (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0)
- echo_client_page_debug_setup(lsm, eap->eap_page, rw,
- oa->o_id,
- eap->eap_off, CFS_PAGE_SIZE);
-
- /* always asserts urgent, which isn't quite right */
- rc = obd_queue_async_io(exp, lsm, NULL, eap->eap_cookie,
- rw, 0, CFS_PAGE_SIZE, 0,
- ASYNC_READY | ASYNC_URGENT |
- ASYNC_COUNT_STABLE);
- spin_lock(&eas.eas_lock);
- if (rc && !eas.eas_rc) {
- eas.eas_rc = rc;
- break;
- }
- eas.eas_in_flight++;
- if (eas.eas_next_offset == eas.eas_end_offset)
- break;
- }
-
- /* still hold the eas_lock here.. */
-
- /* now we just spin waiting for all the rpcs to complete */
- while(eas.eas_in_flight) {
- spin_unlock(&eas.eas_lock);
- wait_event_interruptible(eas.eas_waitq,
- eas.eas_in_flight == 0);
- spin_lock(&eas.eas_lock);
- }
- spin_unlock(&eas.eas_lock);
-
-out:
- if (aps != NULL) {
- for (i = 0; i < npages; ++ i) {
- cfs_page_t *page;
-
- eap = aps[i];
- page = eap->eap_page;
- if (eap->eap_cookie != NULL)
- obd_teardown_async_page(exp, lsm, NULL,
- eap->eap_cookie);
- OBD_FREE(eap, sizeof(*eap));
- OBD_PAGE_FREE(page);
- }
- OBD_FREE(aps, npages * sizeof aps[0]);
- }
-
+ OBD_FREE(pages, npages * sizeof(*pages));
RETURN(rc);
}
static int echo_client_prep_commit(struct obd_export *exp, int rw,
- struct obdo *oa, struct lov_stripe_md *lsm,
+ struct obdo *oa, struct echo_object *eco,
obd_off offset, obd_size count,
obd_size batch, struct obd_trans_info *oti)
{
+ struct lov_stripe_md *lsm = eco->eo_lsm;
struct obd_ioobj ioo;
struct niobuf_local *lnb;
struct niobuf_remote *rnb;
off = offset;
for(; tot_pages; tot_pages -= npages) {
+ int lpages;
+
if (tot_pages < npages)
npages = tot_pages;
ioo.ioo_bufcnt = npages;
oti->oti_transno = 0;
- ret = obd_preprw(rw, exp, oa, 1, &ioo, npages, rnb, lnb, oti,
+ lpages = npages;
+ ret = obd_preprw(rw, exp, oa, 1, &ioo, rnb, &lpages, lnb, oti,
NULL);
if (ret != 0)
GOTO(out, ret);
+ LASSERT(lpages == npages);
- for (i = 0; i < npages; i++) {
+ for (i = 0; i < lpages; i++) {
cfs_page_t *page = lnb[i].page;
/* read past eof? */
rnb[i].len);
}
- ret = obd_commitrw(rw, exp, oa, 1, &ioo, npages, lnb, oti, ret);
+ ret = obd_commitrw(rw, exp, oa, 1,&ioo,rnb,npages,lnb,oti,ret);
if (ret != 0)
GOTO(out, ret);
+
+ /* Reset oti otherwise it would confuse ldiskfs. */
+ memset(oti, 0, sizeof(*oti));
}
out:
RETURN(ret);
}
-int echo_client_brw_ioctl(int rw, struct obd_export *exp,
- struct obd_ioctl_data *data)
+static int echo_client_brw_ioctl(int rw, struct obd_export *exp,
+ struct obd_ioctl_data *data)
{
struct obd_device *obd = class_exp2obd(exp);
- struct echo_client_obd *ec = &obd->u.echo_client;
- struct obd_trans_info dummy_oti = { .oti_thread_id = -1 };
- struct ec_object *eco;
+ struct echo_device *ed = obd2echo_dev(obd);
+ struct echo_client_obd *ec = ed->ed_ec;
+ struct obd_trans_info dummy_oti = { 0 };
+ struct obdo *oa = &data->ioc_obdo1;
+ struct echo_object *eco;
int rc;
+ int async = 1;
ENTRY;
- rc = echo_get_object(&eco, obd, &data->ioc_obdo1);
+ LASSERT(oa->o_valid & OBD_MD_FLGROUP);
+
+ rc = echo_get_object(&eco, ed, oa);
if (rc)
RETURN(rc);
- data->ioc_obdo1.o_valid &= ~OBD_MD_FLHANDLE;
- data->ioc_obdo1.o_valid |= OBD_MD_FLGROUP;
- data->ioc_obdo1.o_gr = FILTER_GROUP_ECHO;
+ oa->o_valid &= ~OBD_MD_FLHANDLE;
switch((long)data->ioc_pbuf1) {
case 1:
- rc = echo_client_kbrw(obd, rw, &data->ioc_obdo1,
- eco->eco_lsm, data->ioc_offset,
- data->ioc_count, &dummy_oti);
- break;
+ async = 0;
+ /* fall through */
case 2:
- rc = echo_client_async_page(ec->ec_exp, rw, &data->ioc_obdo1,
- eco->eco_lsm, data->ioc_offset,
- data->ioc_count, data->ioc_plen1);
+ rc = echo_client_kbrw(ed, rw, oa,
+ eco, data->ioc_offset,
+ data->ioc_count, async, &dummy_oti);
break;
case 3:
- rc = echo_client_prep_commit(ec->ec_exp, rw, &data->ioc_obdo1,
- eco->eco_lsm, data->ioc_offset,
+ rc = echo_client_prep_commit(ec->ec_exp, rw, oa,
+ eco, data->ioc_offset,
data->ioc_count, data->ioc_plen1,
&dummy_oti);
break;
}
static int
-echo_ldlm_callback (struct ldlm_lock *lock, struct ldlm_lock_desc *new,
- void *data, int flag)
-{
- struct ec_object *eco = (struct ec_object *)data;
- struct echo_client_obd *ec = &(eco->eco_device->u.echo_client);
- struct lustre_handle lockh;
- struct list_head *el;
- int found = 0;
- int rc;
-
- ldlm_lock2handle (lock, &lockh);
-
- /* #ifdef this out if we're not feeling paranoid */
- spin_lock (&ec->ec_lock);
- list_for_each (el, &ec->ec_objects) {
- found = (eco == list_entry(el, struct ec_object,
- eco_obj_chain));
- if (found)
- break;
- }
- spin_unlock (&ec->ec_lock);
- LASSERT (found);
-
- switch (flag) {
- case LDLM_CB_BLOCKING:
- CDEBUG(D_INFO, "blocking callback on "LPX64", handle "LPX64"\n",
- eco->eco_id, lockh.cookie);
- rc = ldlm_cli_cancel (&lockh);
- if (rc != ELDLM_OK)
- CERROR ("ldlm_cli_cancel failed: %d\n", rc);
- break;
-
- case LDLM_CB_CANCELING:
- CDEBUG(D_INFO, "cancel callback on "LPX64", handle "LPX64"\n",
- eco->eco_id, lockh.cookie);
- break;
-
- default:
- LBUG ();
- }
-
- return (0);
-}
-
-static int
echo_client_enqueue(struct obd_export *exp, struct obdo *oa,
int mode, obd_off offset, obd_size nob)
{
- struct obd_device *obd = exp->exp_obd;
- struct echo_client_obd *ec = &obd->u.echo_client;
+ struct echo_device *ed = obd2echo_dev(exp->exp_obd);
struct lustre_handle *ulh = &oa->o_handle;
- struct ldlm_enqueue_info einfo = { 0 };
- struct obd_info oinfo = { { { 0 } } };
- struct ec_object *eco;
- struct ec_lock *ecl;
+ struct echo_object *eco;
+ obd_off end;
int rc;
+ ENTRY;
+
+ if (ed->ed_next == NULL)
+ RETURN(-EOPNOTSUPP);
if (!(mode == LCK_PR || mode == LCK_PW))
- return -EINVAL;
+ RETURN(-EINVAL);
if ((offset & (~CFS_PAGE_MASK)) != 0 ||
(nob & (~CFS_PAGE_MASK)) != 0)
- return -EINVAL;
-
- rc = echo_get_object (&eco, obd, oa);
- if (rc != 0)
- return rc;
+ RETURN(-EINVAL);
- rc = -ENOMEM;
- OBD_ALLOC (ecl, sizeof (*ecl));
- if (ecl == NULL)
- goto failed_0;
-
- ecl->ecl_mode = mode;
- ecl->ecl_object = eco;
- ecl->ecl_policy.l_extent.start = offset;
- ecl->ecl_policy.l_extent.end =
- (nob == 0) ? ((obd_off) -1) : (offset + nob - 1);
-
- einfo.ei_type = LDLM_EXTENT;
- einfo.ei_mode = mode;
- einfo.ei_cb_bl = echo_ldlm_callback;
- einfo.ei_cb_cp = ldlm_completion_ast;
- einfo.ei_cb_gl = NULL;
- einfo.ei_cbdata = eco;
-
- oinfo.oi_policy = ecl->ecl_policy;
- oinfo.oi_lockh = &ecl->ecl_lock_handle;
- oinfo.oi_md = eco->eco_lsm;
- rc = obd_enqueue(ec->ec_exp, &oinfo, &einfo, NULL);
+ rc = echo_get_object (&eco, ed, oa);
if (rc != 0)
- goto failed_1;
-
- CDEBUG(D_INFO, "enqueue handle "LPX64"\n", ecl->ecl_lock_handle.cookie);
-
- /* NB ecl takes object ref from echo_get_object() above */
- spin_lock(&ec->ec_lock);
-
- list_add(&ecl->ecl_exp_chain, &exp->exp_ec_data.eced_locks);
- ulh->cookie = ecl->ecl_cookie = ec->ec_unique++;
-
- spin_unlock(&ec->ec_lock);
-
- oa->o_valid |= OBD_MD_FLHANDLE;
- return 0;
+ RETURN(rc);
- failed_1:
- OBD_FREE (ecl, sizeof (*ecl));
- failed_0:
- echo_put_object (eco);
- return (rc);
+ end = (nob == 0) ? ((obd_off) -1) : (offset + nob - 1);
+ rc = cl_echo_enqueue(eco, offset, end, mode, &ulh->cookie);
+ if (rc == 0) {
+ oa->o_valid |= OBD_MD_FLHANDLE;
+ CDEBUG(D_INFO, "Cookie is "LPX64"\n", ulh->cookie);
+ }
+ echo_put_object(eco);
+ RETURN(rc);
}
static int
echo_client_cancel(struct obd_export *exp, struct obdo *oa)
{
- struct obd_device *obd = exp->exp_obd;
- struct echo_client_obd *ec = &obd->u.echo_client;
- struct lustre_handle *ulh = &oa->o_handle;
- struct ec_lock *ecl = NULL;
- int found = 0;
- struct list_head *el;
- int rc;
+ struct echo_device *ed = obd2echo_dev(exp->exp_obd);
+ __u64 cookie = oa->o_handle.cookie;
if ((oa->o_valid & OBD_MD_FLHANDLE) == 0)
return -EINVAL;
- spin_lock (&ec->ec_lock);
-
- list_for_each (el, &exp->exp_ec_data.eced_locks) {
- ecl = list_entry (el, struct ec_lock, ecl_exp_chain);
- found = (ecl->ecl_cookie == ulh->cookie);
- if (found) {
- list_del (&ecl->ecl_exp_chain);
- break;
- }
- }
-
- spin_unlock (&ec->ec_lock);
-
- if (!found)
- return (-ENOENT);
-
- rc = obd_cancel(ec->ec_exp, ecl->ecl_object->eco_lsm, ecl->ecl_mode,
- &ecl->ecl_lock_handle);
-
- echo_put_object (ecl->ecl_object);
- OBD_FREE (ecl, sizeof (*ecl));
-
- return rc;
+ CDEBUG(D_INFO, "Cookie is "LPX64"\n", cookie);
+ return cl_echo_cancel(ed, cookie);
}
static int
echo_client_iocontrol(unsigned int cmd, struct obd_export *exp,
int len, void *karg, void *uarg)
{
- struct obd_device *obd;
- struct echo_client_obd *ec;
- struct ec_object *eco;
+ struct obd_device *obd = exp->exp_obd;
+ struct echo_device *ed = obd2echo_dev(obd);
+ struct echo_client_obd *ec = ed->ed_ec;
+ struct echo_object *eco;
struct obd_ioctl_data *data = karg;
struct obd_trans_info dummy_oti;
struct oti_req_ack_lock *ack_lock;
struct obdo *oa;
+ struct lu_fid fid;
int rw = OBD_BRW_READ;
int rc = 0;
int i;
ENTRY;
- unlock_kernel();
+#ifndef HAVE_UNLOCKED_IOCTL
+ cfs_unlock_kernel();
+#endif
memset(&dummy_oti, 0, sizeof(dummy_oti));
- obd = exp->exp_obd;
- ec = &obd->u.echo_client;
+ oa = &data->ioc_obdo1;
+ if (!(oa->o_valid & OBD_MD_FLGROUP)) {
+ oa->o_valid |= OBD_MD_FLGROUP;
+ oa->o_seq = FID_SEQ_ECHO;
+ }
+
+ /* This FID is unpacked just for validation at this point */
+ rc = fid_ostid_unpack(&fid, &oa->o_oi, 0);
+ if (rc < 0)
+ RETURN(rc);
switch (cmd) {
case OBD_IOC_CREATE: /* may create echo object */
if (!cfs_capable(CFS_CAP_SYS_ADMIN))
GOTO (out, rc = -EPERM);
- rc = echo_create_object (obd, 1, &data->ioc_obdo1,
+ rc = echo_create_object (ed, 1, oa,
data->ioc_pbuf1, data->ioc_plen1,
&dummy_oti);
GOTO(out, rc);
if (!cfs_capable(CFS_CAP_SYS_ADMIN))
GOTO (out, rc = -EPERM);
- rc = echo_get_object (&eco, obd, &data->ioc_obdo1);
+ rc = echo_get_object (&eco, ed, oa);
if (rc == 0) {
- oa = &data->ioc_obdo1;
- oa->o_gr = FILTER_GROUP_ECHO;
- oa->o_valid |= OBD_MD_FLGROUP;
- rc = obd_destroy(ec->ec_exp, oa, eco->eco_lsm,
- &dummy_oti, NULL);
+ rc = obd_destroy(ec->ec_exp, oa, eco->eo_lsm,
+ &dummy_oti, NULL, NULL);
if (rc == 0)
- eco->eco_deleted = 1;
+ eco->eo_deleted = 1;
echo_put_object(eco);
}
GOTO(out, rc);
case OBD_IOC_GETATTR:
- rc = echo_get_object (&eco, obd, &data->ioc_obdo1);
+ rc = echo_get_object (&eco, ed, oa);
if (rc == 0) {
struct obd_info oinfo = { { { 0 } } };
- oinfo.oi_md = eco->eco_lsm;
- oinfo.oi_oa = &data->ioc_obdo1;
+ oinfo.oi_md = eco->eo_lsm;
+ oinfo.oi_oa = oa;
rc = obd_getattr(ec->ec_exp, &oinfo);
echo_put_object(eco);
}
if (!cfs_capable(CFS_CAP_SYS_ADMIN))
GOTO (out, rc = -EPERM);
- rc = echo_get_object (&eco, obd, &data->ioc_obdo1);
+ rc = echo_get_object (&eco, ed, oa);
if (rc == 0) {
struct obd_info oinfo = { { { 0 } } };
- oinfo.oi_oa = &data->ioc_obdo1;
- oinfo.oi_md = eco->eco_lsm;
+ oinfo.oi_oa = oa;
+ oinfo.oi_md = eco->eo_lsm;
rc = obd_setattr(ec->ec_exp, &oinfo, NULL);
echo_put_object(eco);
GOTO(out, rc);
case ECHO_IOC_GET_STRIPE:
- rc = echo_get_object(&eco, obd, &data->ioc_obdo1);
+ rc = echo_get_object(&eco, ed, oa);
if (rc == 0) {
- rc = echo_copyout_lsm(eco->eco_lsm, data->ioc_pbuf1,
+ rc = echo_copyout_lsm(eco->eo_lsm, data->ioc_pbuf1,
data->ioc_plen1);
echo_put_object(eco);
}
GOTO (out, rc = -EPERM);
if (data->ioc_pbuf1 == NULL) { /* unset */
- rc = echo_get_object(&eco, obd, &data->ioc_obdo1);
+ rc = echo_get_object(&eco, ed, oa);
if (rc == 0) {
- eco->eco_deleted = 1;
+ eco->eo_deleted = 1;
echo_put_object(eco);
}
} else {
- rc = echo_create_object(obd, 0, &data->ioc_obdo1,
+ rc = echo_create_object(ed, 0, oa,
data->ioc_pbuf1,
data->ioc_plen1, &dummy_oti);
}
if (!cfs_capable(CFS_CAP_SYS_ADMIN))
GOTO (out, rc = -EPERM);
- rc = echo_client_enqueue(exp, &data->ioc_obdo1,
+ rc = echo_client_enqueue(exp, oa,
data->ioc_conn1, /* lock mode */
- data->ioc_offset, data->ioc_count);/*extent*/
+ data->ioc_offset,
+ data->ioc_count);/*extent*/
GOTO (out, rc);
case ECHO_IOC_CANCEL:
- rc = echo_client_cancel(exp, &data->ioc_obdo1);
+ rc = echo_client_cancel(exp, oa);
GOTO (out, rc);
default:
ldlm_lock_decref(&ack_lock->lock, ack_lock->mode);
}
- lock_kernel();
+#ifndef HAVE_UNLOCKED_IOCTL
+ cfs_lock_kernel();
+#endif
return rc;
}
{
struct echo_client_obd *ec = &obddev->u.echo_client;
struct obd_device *tgt;
- struct lustre_handle conn = {0, };
struct obd_uuid echo_uuid = { "ECHO_UUID" };
struct obd_connect_data *ocd = NULL;
int rc;
RETURN(-EINVAL);
}
- spin_lock_init (&ec->ec_lock);
+ cfs_spin_lock_init (&ec->ec_lock);
CFS_INIT_LIST_HEAD (&ec->ec_objects);
+ CFS_INIT_LIST_HEAD (&ec->ec_locks);
ec->ec_unique = 0;
+ ec->ec_nstripes = 0;
OBD_ALLOC(ocd, sizeof(*ocd));
if (ocd == NULL) {
return -ENOMEM;
}
- ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_REQPORTAL;
+ ocd->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_REQPORTAL |
+ OBD_CONNECT_GRANT | OBD_CONNECT_FULL20 |
+ OBD_CONNECT_64BITHASH;
ocd->ocd_version = LUSTRE_VERSION_CODE;
- ocd->ocd_group = FILTER_GROUP_ECHO;
+ ocd->ocd_group = FID_SEQ_ECHO;
- rc = obd_connect(NULL, &conn, tgt, &echo_uuid, ocd, NULL);
+ rc = obd_connect(NULL, &ec->ec_exp, tgt, &echo_uuid, ocd, NULL);
+ if (rc == 0) {
+ /* Turn off pinger because it connects to tgt obd directly. */
+ cfs_spin_lock(&tgt->obd_dev_lock);
+ cfs_list_del_init(&ec->ec_exp->exp_obd_chain_timed);
+ cfs_spin_unlock(&tgt->obd_dev_lock);
+ }
OBD_FREE(ocd, sizeof(*ocd));
lustre_cfg_string(lcfg, 1));
return (rc);
}
- ec->ec_exp = class_conn2export(&conn);
RETURN(rc);
}
static int echo_client_cleanup(struct obd_device *obddev)
{
- struct list_head *el;
- struct ec_object *eco;
struct echo_client_obd *ec = &obddev->u.echo_client;
int rc;
ENTRY;
- if (!list_empty(&obddev->obd_exports)) {
+ if (!cfs_list_empty(&obddev->obd_exports)) {
CERROR("still has clients!\n");
RETURN(-EBUSY);
}
- /* XXX assuming sole access */
- while (!list_empty(&ec->ec_objects)) {
- el = ec->ec_objects.next;
- eco = list_entry(el, struct ec_object, eco_obj_chain);
-
- LASSERT(eco->eco_refcount == 0);
- eco->eco_refcount = 1;
- eco->eco_deleted = 1;
- echo_put_object(eco);
- }
-
+ LASSERT(cfs_atomic_read(&ec->ec_exp->exp_refcount) > 0);
rc = obd_disconnect(ec->ec_exp);
if (rc != 0)
CERROR("fail to disconnect device: %d\n", rc);
}
static int echo_client_connect(const struct lu_env *env,
- struct lustre_handle *conn,
+ struct obd_export **exp,
struct obd_device *src, struct obd_uuid *cluuid,
struct obd_connect_data *data, void *localdata)
{
- struct obd_export *exp;
int rc;
+ struct lustre_handle conn = { 0 };
ENTRY;
- rc = class_connect(conn, src, cluuid);
+ rc = class_connect(&conn, src, cluuid);
if (rc == 0) {
- exp = class_conn2export(conn);
- CFS_INIT_LIST_HEAD(&exp->exp_ec_data.eced_locks);
- class_export_put(exp);
+ *exp = class_conn2export(&conn);
}
RETURN (rc);
static int echo_client_disconnect(struct obd_export *exp)
{
+#if 0
struct obd_device *obd;
struct echo_client_obd *ec;
struct ec_lock *ecl;
+#endif
int rc;
ENTRY;
if (exp == NULL)
GOTO(out, rc = -EINVAL);
+#if 0
obd = exp->exp_obd;
ec = &obd->u.echo_client;
/* no more contention on export's lock list */
- while (!list_empty (&exp->exp_ec_data.eced_locks)) {
- ecl = list_entry (exp->exp_ec_data.eced_locks.next,
- struct ec_lock, ecl_exp_chain);
- list_del (&ecl->ecl_exp_chain);
+ while (!cfs_list_empty (&exp->exp_ec_data.eced_locks)) {
+ ecl = cfs_list_entry (exp->exp_ec_data.eced_locks.next,
+ struct ec_lock, ecl_exp_chain);
+ cfs_list_del (&ecl->ecl_exp_chain);
rc = obd_cancel(ec->ec_exp, ecl->ecl_object->eco_lsm,
ecl->ecl_mode, &ecl->ecl_lock_handle);
echo_put_object (ecl->ecl_object);
OBD_FREE (ecl, sizeof (*ecl));
}
+#endif
rc = class_disconnect(exp);
GOTO(out, rc);
static struct obd_ops echo_obd_ops = {
.o_owner = THIS_MODULE,
+
+#if 0
.o_setup = echo_client_setup,
.o_cleanup = echo_client_cleanup,
+#endif
+
.o_iocontrol = echo_client_iocontrol,
.o_connect = echo_client_connect,
.o_disconnect = echo_client_disconnect
int echo_client_init(void)
{
struct lprocfs_static_vars lvars = { 0 };
+ int rc;
lprocfs_echo_init_vars(&lvars);
- return class_register_type(&echo_obd_ops, NULL, lvars.module_vars,
- LUSTRE_ECHO_CLIENT_NAME, NULL);
+
+ rc = lu_kmem_init(echo_caches);
+ if (rc == 0)
+ rc = class_register_type(&echo_obd_ops, NULL,
+ lvars.module_vars,
+ LUSTRE_ECHO_CLIENT_NAME,
+ &echo_device_type);
+ if (rc)
+ lu_kmem_fini(echo_caches);
+
+ return rc;
}
void echo_client_exit(void)
{
class_unregister_type(LUSTRE_ECHO_CLIENT_NAME);
+ lu_kmem_fini(echo_caches);
}
+
+/** @} echo_client */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff