* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2015, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
* Implementation of cl_object for OSC layer.
*
*/
#define DEBUG_SUBSYSTEM S_OSC
+#include <lustre_osc.h>
-#include "osc_cl_internal.h"
+#include "osc_internal.h"
/** \addtogroup osc
* @{
/*****************************************************************************
*
- * Type conversions.
+ * Object operations.
*
*/
-
-static struct lu_object *osc2lu(struct osc_object *osc)
-{
- return &osc->oo_cl.co_lu;
-}
-
-static struct osc_object *lu2osc(const struct lu_object *obj)
+static void osc_obj_build_res_name(struct osc_object *osc,
+ struct ldlm_res_id *resname)
{
- LINVRNT(osc_is_object(obj));
- return container_of0(obj, struct osc_object, oo_cl.co_lu);
+ ostid_build_res_name(&osc->oo_oinfo->loi_oi, resname);
}
-/*****************************************************************************
- *
- * Object operations.
- *
- */
+static const struct osc_object_operations osc_object_ops = {
+ .oto_build_res_name = osc_obj_build_res_name,
+ .oto_dlmlock_at_pgoff = osc_obj_dlmlock_at_pgoff,
+};
-static int osc_object_init(const struct lu_env *env, struct lu_object *obj,
- const struct lu_object_conf *conf)
+int osc_object_init(const struct lu_env *env, struct lu_object *obj,
+ const struct lu_object_conf *conf)
{
struct osc_object *osc = lu2osc(obj);
const struct cl_object_conf *cconf = lu2cl_conf(conf);
- osc->oo_oinfo = cconf->u.coc_oinfo;
+ osc->oo_oinfo = cconf->u.coc_oinfo;
#ifdef CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK
mutex_init(&osc->oo_debug_mutex);
#endif
atomic_set(&osc->oo_nr_ios, 0);
init_waitqueue_head(&osc->oo_io_waitq);
+ LASSERT(osc->oo_obj_ops != NULL);
+
cl_object_page_init(lu2cl(obj), sizeof(struct osc_page));
return 0;
}
+EXPORT_SYMBOL(osc_object_init);
-static void osc_object_free(const struct lu_env *env, struct lu_object *obj)
+void osc_object_free(const struct lu_env *env, struct lu_object *obj)
{
struct osc_object *osc = lu2osc(obj);
LASSERT(atomic_read(&osc->oo_nr_ios) == 0);
lu_object_fini(obj);
+ /* osc doen't contain an lu_object_header, so we don't need call_rcu */
OBD_SLAB_FREE_PTR(osc, osc_object_kmem);
}
+EXPORT_SYMBOL(osc_object_free);
int osc_lvb_print(const struct lu_env *env, void *cookie,
- lu_printer_t p, const struct ost_lvb *lvb)
+ lu_printer_t p, const struct ost_lvb *lvb)
{
return (*p)(env, cookie, "size: %llu mtime: %llu atime: %llu "
"ctime: %llu blocks: %llu",
lvb->lvb_size, lvb->lvb_mtime, lvb->lvb_atime,
lvb->lvb_ctime, lvb->lvb_blocks);
}
+EXPORT_SYMBOL(osc_lvb_print);
-static int osc_object_print(const struct lu_env *env, void *cookie,
- lu_printer_t p, const struct lu_object *obj)
+int osc_object_print(const struct lu_env *env, void *cookie,
+ lu_printer_t p, const struct lu_object *obj)
{
- struct osc_object *osc = lu2osc(obj);
- struct lov_oinfo *oinfo = osc->oo_oinfo;
- struct osc_async_rc *ar = &oinfo->loi_ar;
+ struct osc_object *osc = lu2osc(obj);
+ struct lov_oinfo *oinfo = osc->oo_oinfo;
+ struct osc_async_rc *ar = &oinfo->loi_ar;
(*p)(env, cookie, "id: "DOSTID" "
"idx: %d gen: %d kms_valid: %u kms %llu "
osc_lvb_print(env, cookie, p, &oinfo->loi_lvb);
return 0;
}
+EXPORT_SYMBOL(osc_object_print);
-static int osc_attr_get(const struct lu_env *env, struct cl_object *obj,
- struct cl_attr *attr)
+int osc_attr_get(const struct lu_env *env, struct cl_object *obj,
+ struct cl_attr *attr)
{
- struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
+ struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
- cl_lvb2attr(attr, &oinfo->loi_lvb);
- attr->cat_kms = oinfo->loi_kms_valid ? oinfo->loi_kms : 0;
- return 0;
+ cl_lvb2attr(attr, &oinfo->loi_lvb);
+ attr->cat_kms = oinfo->loi_kms_valid ? oinfo->loi_kms : 0;
+ return 0;
}
+EXPORT_SYMBOL(osc_attr_get);
-static int osc_attr_update(const struct lu_env *env, struct cl_object *obj,
- const struct cl_attr *attr, unsigned valid)
+int osc_attr_update(const struct lu_env *env, struct cl_object *obj,
+ const struct cl_attr *attr, unsigned valid)
{
struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
struct ost_lvb *lvb = &oinfo->loi_lvb;
}
return 0;
}
+EXPORT_SYMBOL(osc_attr_update);
-static int osc_object_glimpse(const struct lu_env *env,
- const struct cl_object *obj, struct ost_lvb *lvb)
+int osc_object_glimpse(const struct lu_env *env, const struct cl_object *obj,
+ struct ost_lvb *lvb)
{
- struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
+ struct lov_oinfo *oinfo = cl2osc(obj)->oo_oinfo;
- ENTRY;
- lvb->lvb_size = oinfo->loi_kms;
- lvb->lvb_blocks = oinfo->loi_lvb.lvb_blocks;
- RETURN(0);
+ lvb->lvb_size = oinfo->loi_kms;
+ lvb->lvb_blocks = oinfo->loi_lvb.lvb_blocks;
+ return 0;
}
+EXPORT_SYMBOL(osc_object_glimpse);
static int osc_object_ast_clear(struct ldlm_lock *lock, void *data)
{
+ struct osc_object *osc = (struct osc_object *)data;
+ struct ost_lvb *lvb = lock->l_lvb_data;
+ struct lov_oinfo *oinfo;
ENTRY;
- if (lock->l_ast_data == data)
+ if (lock->l_ast_data == data) {
lock->l_ast_data = NULL;
+
+ LASSERT(osc != NULL);
+ LASSERT(osc->oo_oinfo != NULL);
+ LASSERT(lvb != NULL);
+
+ /* Updates lvb in lock by the cached oinfo */
+ oinfo = osc->oo_oinfo;
+
+ LDLM_DEBUG(lock, "update lock size %llu blocks %llu [cma]time: "
+ "%llu %llu %llu by oinfo size %llu blocks %llu "
+ "[cma]time %llu %llu %llu", lvb->lvb_size,
+ lvb->lvb_blocks, lvb->lvb_ctime, lvb->lvb_mtime,
+ lvb->lvb_atime, oinfo->loi_lvb.lvb_size,
+ oinfo->loi_lvb.lvb_blocks, oinfo->loi_lvb.lvb_ctime,
+ oinfo->loi_lvb.lvb_mtime, oinfo->loi_lvb.lvb_atime);
+ LASSERTF(oinfo->loi_lvb.lvb_size >= oinfo->loi_kms,
+ "lvb_size %#llx, loi_kms %#llx\n",
+ oinfo->loi_lvb.lvb_size, oinfo->loi_kms);
+
+ cl_object_attr_lock(&osc->oo_cl);
+ memcpy(lvb, &oinfo->loi_lvb, sizeof(oinfo->loi_lvb));
+ cl_object_attr_unlock(&osc->oo_cl);
+ ldlm_clear_lvb_cached(lock);
+ }
RETURN(LDLM_ITER_CONTINUE);
}
-static int osc_object_prune(const struct lu_env *env, struct cl_object *obj)
+int osc_object_prune(const struct lu_env *env, struct cl_object *obj)
{
- struct osc_object *osc = cl2osc(obj);
- struct ldlm_res_id *resname = &osc_env_info(env)->oti_resname;
+ struct osc_object *osc = cl2osc(obj);
+ struct ldlm_res_id *resname = &osc_env_info(env)->oti_resname;
/* DLM locks don't hold a reference of osc_object so we have to
* clear it before the object is being destroyed. */
- ostid_build_res_name(&osc->oo_oinfo->loi_oi, resname);
+ osc_build_res_name(osc, resname);
ldlm_resource_iterate(osc_export(osc)->exp_obd->obd_namespace, resname,
osc_object_ast_clear, osc);
return 0;
}
+EXPORT_SYMBOL(osc_object_prune);
static int osc_object_fiemap(const struct lu_env *env, struct cl_object *obj,
struct ll_fiemap_info_key *fmkey,
mode = ldlm_lock_match(exp->exp_obd->obd_namespace,
LDLM_FL_BLOCK_GRANTED | LDLM_FL_LVB_READY,
&resid, LDLM_EXTENT, &policy,
- LCK_PR | LCK_PW, &lockh, 0);
+ LCK_PR | LCK_PW, &lockh);
if (mode) { /* lock is cached on client */
if (mode != LCK_PR) {
ldlm_lock_addref(&lockh, LCK_PR);
RETURN(rc);
}
-void osc_object_set_contended(struct osc_object *obj)
-{
- obj->oo_contention_time = cfs_time_current();
- /* mb(); */
- obj->oo_contended = 1;
-}
-
-void osc_object_clear_contended(struct osc_object *obj)
-{
- obj->oo_contended = 0;
-}
-
int osc_object_is_contended(struct osc_object *obj)
{
- struct osc_device *dev = lu2osc_dev(obj->oo_cl.co_lu.lo_dev);
- int osc_contention_time = dev->od_contention_time;
- cfs_time_t cur_time = cfs_time_current();
- cfs_time_t retry_time;
+ struct osc_device *dev = lu2osc_dev(obj->oo_cl.co_lu.lo_dev);
+ time64_t osc_contention_time = dev->od_contention_time;
+ ktime_t retry_time;
if (OBD_FAIL_CHECK(OBD_FAIL_OSC_OBJECT_CONTENTION))
return 1;
if (!obj->oo_contended)
return 0;
- /*
- * I like copy-paste. the code is copied from
- * ll_file_is_contended.
- */
- retry_time = cfs_time_add(obj->oo_contention_time,
- cfs_time_seconds(osc_contention_time));
- if (cfs_time_after(cur_time, retry_time)) {
- osc_object_clear_contended(obj);
- return 0;
- }
- return 1;
+ retry_time = ktime_add_ns(obj->oo_contention_time,
+ osc_contention_time * NSEC_PER_SEC);
+ if (ktime_after(ktime_get(), retry_time)) {
+ osc_object_clear_contended(obj);
+ return 0;
+ }
+ return 1;
}
+EXPORT_SYMBOL(osc_object_is_contended);
/**
* Implementation of struct cl_object_operations::coo_req_attr_set() for osc
oa->o_mtime = lvb->lvb_mtime;
oa->o_valid |= OBD_MD_FLMTIME;
}
- if ((flags & OBD_MD_FLATIME) != 0) {
+ /* XXX:
+ * I don't understand this part, what for OSC resets atime just
+ * set by VVP layer to 0 so that OST gets 0 instead of actual
+ * atime, bzzz. please inspect this place with extra care.
+ */
+ if ((flags & OBD_MD_FLATIME) && lvb->lvb_atime > oa->o_atime) {
oa->o_atime = lvb->lvb_atime;
oa->o_valid |= OBD_MD_FLATIME;
}
lu_object_init(obj, NULL, dev);
osc->oo_cl.co_ops = &osc_ops;
obj->lo_ops = &osc_lu_obj_ops;
+ osc->oo_obj_ops = &osc_object_ops;
} else
obj = NULL;
return obj;
int osc_object_invalidate(const struct lu_env *env, struct osc_object *osc)
{
- struct l_wait_info lwi = { 0 };
ENTRY;
CDEBUG(D_INODE, "Invalidate osc object: %p, # of active IOs: %d\n",
osc, atomic_read(&osc->oo_nr_ios));
- l_wait_event(osc->oo_io_waitq, atomic_read(&osc->oo_nr_ios) == 0, &lwi);
+ wait_event_idle(osc->oo_io_waitq, atomic_read(&osc->oo_nr_ios) == 0);
/* Discard all dirty pages of this object. */
osc_cache_truncate_start(env, osc, 0, NULL);
/* Discard all caching pages */
- osc_lock_discard_pages(env, osc, 0, CL_PAGE_EOF, CLM_WRITE);
+ osc_lock_discard_pages(env, osc, 0, CL_PAGE_EOF, true);
/* Clear ast data of dlm lock. Do this after discarding all pages */
- osc_object_prune(env, osc2cl(osc));
+ cl_object_prune(env, osc2cl(osc));
RETURN(0);
}
-
+EXPORT_SYMBOL(osc_object_invalidate);
/** @} osc */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff