-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
*/
-int lovsub_object_init(const struct lu_env *env, struct lu_object *obj,
- const struct lu_object_conf *conf)
+static int lovsub_object_init(const struct lu_env *env, struct lu_object *obj,
+ const struct lu_object_conf *conf)
+{
+ struct lovsub_device *dev = lu2lovsub_dev(obj->lo_dev);
+ struct lu_object *below;
+ struct lu_device *under;
+ int result;
+
+ ENTRY;
+ under = &dev->acid_next->cd_lu_dev;
+ below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
+ if (below) {
+ lu_object_add(obj, below);
+ cl_object_page_init(lu2cl(obj), 0);
+ result = 0;
+ } else
+ result = -ENOMEM;
+ RETURN(result);
+
+}
+
+static void lovsub_object_free_rcu(struct rcu_head *head)
{
- struct lovsub_device *dev = lu2lovsub_dev(obj->lo_dev);
- struct lu_object *below;
- struct lu_device *under;
-
- int result;
-
- ENTRY;
- under = &dev->acid_next->cd_lu_dev;
- below = under->ld_ops->ldo_object_alloc(env, obj->lo_header, under);
- if (below != NULL) {
- lu_object_add(obj, below);
- result = 0;
- } else
- result = -ENOMEM;
- RETURN(result);
+ struct lovsub_object *los = container_of(head, struct lovsub_object,
+ lso_header.coh_lu.loh_rcu);
+ kmem_cache_free(lovsub_object_kmem, los);
}
static void lovsub_object_free(const struct lu_env *env, struct lu_object *obj)
{
- struct lovsub_object *los = lu2lovsub(obj);
- struct lov_object *lov = los->lso_super;
- ENTRY;
-
- /* We can't assume lov was assigned here, because of the shadow
- * object handling in lu_object_find.
- */
- if (lov) {
- LASSERT(lov->lo_type == LLT_RAID0);
- LASSERT(lov->u.raid0.lo_sub[los->lso_index] == los);
- cfs_spin_lock(&lov->u.raid0.lo_sub_lock);
- lov->u.raid0.lo_sub[los->lso_index] = NULL;
- cfs_spin_unlock(&lov->u.raid0.lo_sub_lock);
- }
-
- lu_object_fini(obj);
- lu_object_header_fini(&los->lso_header.coh_lu);
- OBD_SLAB_FREE_PTR(los, lovsub_object_kmem);
- EXIT;
+ struct lovsub_object *los = lu2lovsub(obj);
+ struct lov_object *lov = los->lso_super;
+
+ ENTRY;
+
+ /*
+ * We can't assume lov was assigned here, because of the shadow
+ * object handling in lu_object_find.
+ */
+ if (lov) {
+ int index = lov_comp_entry(los->lso_index);
+ int stripe = lov_comp_stripe(los->lso_index);
+ struct lov_layout_raid0 *r0 = lov_r0(lov, index);
+
+ LASSERT(lov->lo_type == LLT_COMP);
+ LASSERT(r0->lo_sub[stripe] == los);
+ spin_lock(&r0->lo_sub_lock);
+ r0->lo_sub[stripe] = NULL;
+ spin_unlock(&r0->lo_sub_lock);
+ }
+
+ lu_object_fini(obj);
+ lu_object_header_fini(&los->lso_header.coh_lu);
+ OBD_FREE_PRE(los, sizeof(*los), "slab-freed");
+ call_rcu(&los->lso_header.coh_lu.loh_rcu, lovsub_object_free_rcu);
+ EXIT;
}
static int lovsub_object_print(const struct lu_env *env, void *cookie,
- lu_printer_t p, const struct lu_object *obj)
+ lu_printer_t p, const struct lu_object *obj)
{
- struct lovsub_object *los = lu2lovsub(obj);
+ struct lovsub_object *los = lu2lovsub(obj);
- return (*p)(env, cookie, "[%i]", los->lso_index);
+ return (*p)(env, cookie, "[%d]", los->lso_index);
}
-static int lovsub_attr_set(const struct lu_env *env, struct cl_object *obj,
- const struct cl_attr *attr, unsigned valid)
+static int lovsub_attr_update(const struct lu_env *env, struct cl_object *obj,
+ const struct cl_attr *attr, unsigned valid)
{
- struct lov_object *lov = cl2lovsub(obj)->lso_super;
+ struct lovsub_object *los = cl2lovsub(obj);
+ struct lov_object *lov = cl2lovsub(obj)->lso_super;
- ENTRY;
- lov_r0(lov)->lo_attr_valid = 0;
- RETURN(0);
+ ENTRY;
+ lov_r0(lov, lov_comp_entry(los->lso_index))->lo_attr_valid = 0;
+ RETURN(0);
}
static int lovsub_object_glimpse(const struct lu_env *env,
- const struct cl_object *obj,
- struct ost_lvb *lvb)
+ const struct cl_object *obj,
+ struct ost_lvb *lvb)
{
- struct lovsub_object *los = cl2lovsub(obj);
+ struct lovsub_object *los = cl2lovsub(obj);
- ENTRY;
- RETURN(cl_object_glimpse(env, &los->lso_super->lo_cl, lvb));
+ ENTRY;
+ RETURN(cl_object_glimpse(env, &los->lso_super->lo_cl, lvb));
}
-
+/**
+ * Implementation of struct cl_object_operations::coo_req_attr_set() for lovsub
+ * layer. Lov and lovsub are responsible only for struct obdo::o_stripe_idx
+ * field, which is filled there.
+ */
+static void lovsub_req_attr_set(const struct lu_env *env, struct cl_object *obj,
+ struct cl_req_attr *attr)
+{
+ struct lovsub_object *subobj = cl2lovsub(obj);
+ struct lov_stripe_md *lsm = subobj->lso_super->lo_lsm;
+
+ ENTRY;
+ cl_req_attr_set(env, &subobj->lso_super->lo_cl, attr);
+
+ /*
+ * There is no OBD_MD_* flag for obdo::o_stripe_idx, so set it
+ * unconditionally. It never changes anyway.
+ */
+ attr->cra_oa->o_stripe_idx = lov_comp_stripe(subobj->lso_index);
+ lov_lsm2layout(lsm, lsm->lsm_entries[lov_comp_entry(subobj->lso_index)],
+ &attr->cra_oa->o_layout);
+ attr->cra_oa->o_valid |= OBD_MD_FLOSTLAYOUT;
+ EXIT;
+}
static const struct cl_object_operations lovsub_ops = {
- .coo_page_init = lovsub_page_init,
- .coo_lock_init = lovsub_lock_init,
- .coo_attr_set = lovsub_attr_set,
- .coo_glimpse = lovsub_object_glimpse
+ .coo_attr_update = lovsub_attr_update,
+ .coo_glimpse = lovsub_object_glimpse,
+ .coo_req_attr_set = lovsub_req_attr_set
};
static const struct lu_object_operations lovsub_lu_obj_ops = {
- .loo_object_init = lovsub_object_init,
- .loo_object_delete = NULL,
- .loo_object_release = NULL,
- .loo_object_free = lovsub_object_free,
- .loo_object_print = lovsub_object_print,
- .loo_object_invariant = NULL
+ .loo_object_init = lovsub_object_init,
+ .loo_object_delete = NULL,
+ .loo_object_release = NULL,
+ .loo_object_free = lovsub_object_free,
+ .loo_object_print = lovsub_object_print,
+ .loo_object_invariant = NULL
};
struct lu_object *lovsub_object_alloc(const struct lu_env *env,
- const struct lu_object_header *unused,
- struct lu_device *dev)
+ const struct lu_object_header *unused,
+ struct lu_device *dev)
{
- struct lovsub_object *los;
- struct lu_object *obj;
-
- ENTRY;
- OBD_SLAB_ALLOC_PTR_GFP(los, lovsub_object_kmem, CFS_ALLOC_IO);
- if (los != NULL) {
- struct cl_object_header *hdr;
-
- obj = lovsub2lu(los);
- hdr = &los->lso_header;
- cl_object_header_init(hdr);
- lu_object_init(obj, &hdr->coh_lu, dev);
- lu_object_add_top(&hdr->coh_lu, obj);
- los->lso_cl.co_ops = &lovsub_ops;
- obj->lo_ops = &lovsub_lu_obj_ops;
- } else
- obj = NULL;
- RETURN(obj);
+ struct lovsub_object *los;
+ struct lu_object *obj;
+
+ ENTRY;
+ OBD_SLAB_ALLOC_PTR_GFP(los, lovsub_object_kmem, GFP_NOFS);
+ if (los) {
+ struct cl_object_header *hdr;
+
+ obj = lovsub2lu(los);
+ hdr = &los->lso_header;
+ cl_object_header_init(hdr);
+ lu_object_init(obj, &hdr->coh_lu, dev);
+ lu_object_add_top(&hdr->coh_lu, obj);
+ los->lso_cl.co_ops = &lovsub_ops;
+ obj->lo_ops = &lovsub_lu_obj_ops;
+ } else
+ obj = NULL;
+ RETURN(obj);
}
/** @} lov */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff