-/* -*- 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.
* 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) 2010, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Andreas Dilger <adilger@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
#define DEBUG_SUBSYSTEM S_ECHO
#include <obd_support.h>
#include "echo_internal.h"
-#define ECHO_INIT_OBJID 0x1000000000000000ULL
+/* The echo objid needs to be below 2^32, because regular FID numbers are
+ * limited to 2^32 objects in f_oid for the FID_SEQ_ECHO range. b=23335 */
+#define ECHO_INIT_OID 0x10000000ULL
#define ECHO_HANDLE_MAGIC 0xabcd0123fedc9876ULL
-#define ECHO_PERSISTENT_PAGES (ECHO_PERSISTENT_SIZE >> CFS_PAGE_SHIFT)
-static cfs_page_t *echo_persistent_pages[ECHO_PERSISTENT_PAGES];
+#define ECHO_PERSISTENT_PAGES (ECHO_PERSISTENT_SIZE >> PAGE_CACHE_SHIFT)
+static struct page *echo_persistent_pages[ECHO_PERSISTENT_PAGES];
enum {
LPROC_ECHO_READ_BYTES = 1,
static __u64 echo_next_id(struct obd_device *obddev)
{
- obd_id id;
+ obd_id id;
- spin_lock(&obddev->u.echo.eo_lock);
- id = ++obddev->u.echo.eo_lastino;
- spin_unlock(&obddev->u.echo.eo_lock);
+ spin_lock(&obddev->u.echo.eo_lock);
+ id = ++obddev->u.echo.eo_lastino;
+ spin_unlock(&obddev->u.echo.eo_lock);
- return id;
+ return id;
}
-int echo_create(struct obd_export *exp, struct obdo *oa,
- struct lov_stripe_md **ea, struct obd_trans_info *oti)
+static int echo_create(const struct lu_env *env, struct obd_export *exp,
+ struct obdo *oa, struct lov_stripe_md **ea,
+ struct obd_trans_info *oti)
{
struct obd_device *obd = class_exp2obd(exp);
return -EINVAL;
}
- oa->o_id = echo_next_id(obd);
- oa->o_valid = OBD_MD_FLID;
+ ostid_set_seq_echo(&oa->o_oi);
+ ostid_set_id(&oa->o_oi, echo_next_id(obd));
+ oa->o_valid = OBD_MD_FLID;
- return 0;
+ return 0;
}
-int echo_destroy(struct obd_export *exp, struct obdo *oa,
- struct lov_stripe_md *ea, struct obd_trans_info *oti,
- struct obd_export *md_exp, void *capa)
+static int echo_destroy(const struct lu_env *env, struct obd_export *exp,
+ struct obdo *oa, struct lov_stripe_md *ea,
+ struct obd_trans_info *oti, struct obd_export *md_exp,
+ void *capa)
{
struct obd_device *obd = class_exp2obd(exp);
RETURN(-EINVAL);
}
- if (oa->o_id > obd->u.echo.eo_lastino || oa->o_id < ECHO_INIT_OBJID) {
- CERROR("bad destroy objid: "LPX64"\n", oa->o_id);
- RETURN(-EINVAL);
- }
+ if (ostid_id(&oa->o_oi) > obd->u.echo.eo_lastino ||
+ ostid_id(&oa->o_oi) < ECHO_INIT_OID) {
+ CERROR("bad destroy objid: "DOSTID"\n", POSTID(&oa->o_oi));
+ RETURN(-EINVAL);
+ }
RETURN(0);
}
-static int echo_getattr(struct obd_export *exp, struct obd_info *oinfo)
+static int echo_getattr(const struct lu_env *env, struct obd_export *exp,
+ struct obd_info *oinfo)
{
- struct obd_device *obd = class_exp2obd(exp);
- obd_id id = oinfo->oi_oa->o_id;
+ struct obd_device *obd = class_exp2obd(exp);
+ obd_id id = ostid_id(&oinfo->oi_oa->o_oi);
ENTRY;
if (!obd) {
RETURN(-EINVAL);
}
- obdo_cpy_md(oinfo->oi_oa, &obd->u.echo.eo_oa, oinfo->oi_oa->o_valid);
- oinfo->oi_oa->o_id = id;
+ obdo_cpy_md(oinfo->oi_oa, &obd->u.echo.eo_oa, oinfo->oi_oa->o_valid);
+ ostid_set_seq_echo(&oinfo->oi_oa->o_oi);
+ ostid_set_id(&oinfo->oi_oa->o_oi, id);
- RETURN(0);
+ RETURN(0);
}
-static int echo_setattr(struct obd_export *exp, struct obd_info *oinfo,
- struct obd_trans_info *oti)
+static int echo_setattr(const struct lu_env *env, struct obd_export *exp,
+ struct obd_info *oinfo, struct obd_trans_info *oti)
{
struct obd_device *obd = class_exp2obd(exp);
memcpy(&obd->u.echo.eo_oa, oinfo->oi_oa, sizeof(*oinfo->oi_oa));
- if (oinfo->oi_oa->o_id & 4) {
+ if (ostid_id(&oinfo->oi_oa->o_oi) & 4) {
/* Save lock to force ACKed reply */
ldlm_lock_addref (&obd->u.echo.eo_nl_lock, LCK_NL);
oti->oti_ack_locks[0].mode = LCK_NL;
}
static void
-echo_page_debug_setup(cfs_page_t *page, int rw, obd_id id,
- __u64 offset, int len)
+echo_page_debug_setup(struct page *page, int rw, obd_id id,
+ __u64 offset, int len)
{
- int page_offset = offset & ~CFS_PAGE_MASK;
- char *addr = ((char *)cfs_kmap(page)) + page_offset;
+ int page_offset = offset & ~CFS_PAGE_MASK;
+ char *addr = ((char *)kmap(page)) + page_offset;
if (len % OBD_ECHO_BLOCK_SIZE != 0)
CERROR("Unexpected block size %d\n", len);
len -= OBD_ECHO_BLOCK_SIZE;
}
- cfs_kunmap(page);
+ kunmap(page);
}
static int
-echo_page_debug_check(cfs_page_t *page, obd_id id,
- __u64 offset, int len)
+echo_page_debug_check(struct page *page, obd_id id,
+ __u64 offset, int len)
{
- int page_offset = offset & ~CFS_PAGE_MASK;
- char *addr = ((char *)cfs_kmap(page)) + page_offset;
- int rc = 0;
- int rc2;
+ int page_offset = offset & ~CFS_PAGE_MASK;
+ char *addr = ((char *)kmap(page)) + page_offset;
+ int rc = 0;
+ int rc2;
if (len % OBD_ECHO_BLOCK_SIZE != 0)
CERROR("Unexpected block size %d\n", len);
len -= OBD_ECHO_BLOCK_SIZE;
}
- cfs_kunmap(page);
+ kunmap(page);
- return (rc);
+ return rc;
}
/* This allows us to verify that desc_private is passed unmolested */
struct niobuf_remote *nb, int *pages,
struct niobuf_local *lb, int cmd, int *left)
{
- int gfp_mask = (obj->ioo_id & 1) ? CFS_ALLOC_HIGHUSER : CFS_ALLOC_STD;
- int ispersistent = obj->ioo_id == ECHO_PERSISTENT_OBJID;
- int debug_setup = (!ispersistent &&
- (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
- (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
- struct niobuf_local *res = lb;
- obd_off offset = nb->offset;
- int len = nb->len;
-
- while (len > 0) {
- int plen = CFS_PAGE_SIZE - (offset & (CFS_PAGE_SIZE-1));
- if (len < plen)
- plen = len;
+ int gfp_mask = (ostid_id(&obj->ioo_oid) & 1) ?
+ GFP_HIGHUSER : GFP_IOFS;
+ int ispersistent = ostid_id(&obj->ioo_oid) == ECHO_PERSISTENT_OBJID;
+ int debug_setup = (!ispersistent &&
+ (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
+ (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
+ struct niobuf_local *res = lb;
+ obd_off offset = nb->offset;
+ int len = nb->len;
+
+ while (len > 0) {
+ int plen = PAGE_CACHE_SIZE - (offset & (PAGE_CACHE_SIZE-1));
+ if (len < plen)
+ plen = len;
/* check for local buf overflow */
if (*left == 0)
return -EINVAL;
- res->offset = offset;
- res->len = plen;
- LASSERT((res->offset & ~CFS_PAGE_MASK) + res->len <= CFS_PAGE_SIZE);
-
-
- if (ispersistent &&
- (res->offset >> CFS_PAGE_SHIFT) < ECHO_PERSISTENT_PAGES) {
- res->page = echo_persistent_pages[res->offset >>
- CFS_PAGE_SHIFT];
- /* Take extra ref so __free_pages() can be called OK */
- cfs_get_page (res->page);
- } else {
- OBD_PAGE_ALLOC(res->page, gfp_mask);
- if (res->page == NULL) {
- CERROR("can't get page for id " LPU64"\n",
- obj->ioo_id);
- return -ENOMEM;
- }
- }
-
- CDEBUG(D_PAGE, "$$$$ get page %p @ "LPU64" for %d\n",
- res->page, res->offset, res->len);
-
- if (cmd & OBD_BRW_READ)
- res->rc = res->len;
-
- if (debug_setup)
- echo_page_debug_setup(res->page, cmd, obj->ioo_id,
- res->offset, res->len);
+ res->lnb_file_offset = offset;
+ res->lnb_len = plen;
+ LASSERT((res->lnb_file_offset & ~CFS_PAGE_MASK) +
+ res->lnb_len <= PAGE_CACHE_SIZE);
+
+ if (ispersistent &&
+ ((res->lnb_file_offset >> PAGE_CACHE_SHIFT) <
+ ECHO_PERSISTENT_PAGES)) {
+ res->lnb_page =
+ echo_persistent_pages[res->lnb_file_offset >>
+ PAGE_CACHE_SHIFT];
+ /* Take extra ref so __free_pages() can be called OK */
+ get_page(res->lnb_page);
+ } else {
+ OBD_PAGE_ALLOC(res->lnb_page, gfp_mask);
+ if (res->lnb_page == NULL) {
+ CERROR("can't get page for id " DOSTID"\n",
+ POSTID(&obj->ioo_oid));
+ return -ENOMEM;
+ }
+ }
+
+ CDEBUG(D_PAGE, "$$$$ get page %p @ "LPU64" for %d\n",
+ res->lnb_page, res->lnb_file_offset, res->lnb_len);
+
+ if (cmd & OBD_BRW_READ)
+ res->lnb_rc = res->lnb_len;
+
+ if (debug_setup)
+ echo_page_debug_setup(res->lnb_page, cmd,
+ ostid_id(&obj->ioo_oid),
+ res->lnb_file_offset,
+ res->lnb_len);
offset += plen;
len -= plen;
}
static int echo_finalize_lb(struct obdo *oa, struct obd_ioobj *obj,
- struct niobuf_remote *rb, int *pgs,
- struct niobuf_local *lb, int verify)
+ struct niobuf_remote *rb, int *pgs,
+ struct niobuf_local *lb, int verify)
{
- struct niobuf_local *res = lb;
- obd_off start = rb->offset >> CFS_PAGE_SHIFT;
- obd_off end = (rb->offset + rb->len + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
- int count = (int)(end - start);
- int rc = 0;
- int i;
-
- for (i = 0; i < count; i++, (*pgs) ++, res++) {
- cfs_page_t *page = res->page;
- void *addr;
-
- if (page == NULL) {
- CERROR("null page objid "LPU64":%p, buf %d/%d\n",
- obj->ioo_id, page, i, obj->ioo_bufcnt);
- return -EFAULT;
- }
-
- addr = cfs_kmap(page);
-
- CDEBUG(D_PAGE, "$$$$ use page %p, addr %p@"LPU64"\n",
- res->page, addr, res->offset);
-
- if (verify) {
- int vrc = echo_page_debug_check(page, obj->ioo_id,
- res->offset, res->len);
- /* check all the pages always */
- if (vrc != 0 && rc == 0)
- rc = vrc;
- }
-
- cfs_kunmap(page);
- /* NB see comment above regarding persistent pages */
- OBD_PAGE_FREE(page);
- }
-
- return rc;
+ struct niobuf_local *res = lb;
+ obd_off start = rb->offset >> PAGE_CACHE_SHIFT;
+ obd_off end = (rb->offset + rb->len + PAGE_CACHE_SIZE - 1) >>
+ PAGE_CACHE_SHIFT;
+ int count = (int)(end - start);
+ int rc = 0;
+ int i;
+
+ for (i = 0; i < count; i++, (*pgs) ++, res++) {
+ struct page *page = res->lnb_page;
+ void *addr;
+
+ if (page == NULL) {
+ CERROR("null page objid "LPU64":%p, buf %d/%d\n",
+ ostid_id(&obj->ioo_oid), page, i,
+ obj->ioo_bufcnt);
+ return -EFAULT;
+ }
+
+ addr = kmap(page);
+
+ CDEBUG(D_PAGE, "$$$$ use page %p, addr %p@"LPU64"\n",
+ res->lnb_page, addr, res->lnb_file_offset);
+
+ if (verify) {
+ int vrc = echo_page_debug_check(page,
+ ostid_id(&obj->ioo_oid),
+ res->lnb_file_offset,
+ res->lnb_len);
+ /* check all the pages always */
+ if (vrc != 0 && rc == 0)
+ rc = vrc;
+ }
+
+ kunmap(page);
+ /* NB see comment above regarding persistent pages */
+ OBD_PAGE_FREE(page);
+ }
+
+ return rc;
}
-int echo_preprw(int cmd, struct obd_export *export, struct obdo *oa,
- int objcount, struct obd_ioobj *obj, struct niobuf_remote *nb,
- int *pages, struct niobuf_local *res,
- struct obd_trans_info *oti, struct lustre_capa *unused)
+static int echo_preprw(const struct lu_env *env, int cmd,
+ struct obd_export *export, struct obdo *oa,
+ int objcount, struct obd_ioobj *obj,
+ struct niobuf_remote *nb, int *pages,
+ struct niobuf_local *res, struct obd_trans_info *oti,
+ struct lustre_capa *unused)
{
struct obd_device *obd;
int tot_bytes = 0;
}
}
- atomic_add(*pages, &obd->u.echo.eo_prep);
+ atomic_add(*pages, &obd->u.echo.eo_prep);
if (cmd & OBD_BRW_READ)
lprocfs_counter_add(obd->obd_stats, LPROC_ECHO_READ_BYTES,
tot_bytes);
CDEBUG(D_PAGE, "%d pages allocated after prep\n",
- atomic_read(&obd->u.echo.eo_prep));
+ atomic_read(&obd->u.echo.eo_prep));
RETURN(0);
*/
CERROR("cleaning up %u pages (%d obdos)\n", *pages, objcount);
for (i = 0; i < *pages; i++) {
- cfs_kunmap(res[i].page);
- /* NB if this is a persistent page, __free_pages will just
- * lose the extra ref gained above */
- OBD_PAGE_FREE(res[i].page);
- res[i].page = NULL;
- atomic_dec(&obd->u.echo.eo_prep);
- }
-
- return rc;
+ kunmap(res[i].lnb_page);
+ /* NB if this is a persistent page, __free_pages will just
+ * lose the extra ref gained above */
+ OBD_PAGE_FREE(res[i].lnb_page);
+ res[i].lnb_page = NULL;
+ atomic_dec(&obd->u.echo.eo_prep);
+ }
+
+ return rc;
}
-int echo_commitrw(int cmd, struct obd_export *export, struct obdo *oa,
- int objcount, struct obd_ioobj *obj,
- struct niobuf_remote *rb, int niocount,
- struct niobuf_local *res, struct obd_trans_info *oti, int rc)
+static int echo_commitrw(const struct lu_env *env, int cmd,
+ struct obd_export *export, struct obdo *oa,
+ int objcount, struct obd_ioobj *obj,
+ struct niobuf_remote *rb, int niocount,
+ struct niobuf_local *res, struct obd_trans_info *oti,
+ int rc)
{
struct obd_device *obd;
int pgs = 0;
LASSERT(oti == NULL || oti->oti_handle == (void *)DESC_PRIV);
- for (i = 0; i < objcount; i++, obj++) {
- int verify = (rc == 0 &&
- obj->ioo_id != ECHO_PERSISTENT_OBJID &&
- (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
- (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
- int j;
-
- for (j = 0 ; j < obj->ioo_bufcnt ; j++, rb++) {
- int vrc = echo_finalize_lb(oa, obj, rb, &pgs, &res[pgs], verify);
+ for (i = 0; i < objcount; i++, obj++) {
+ int verify = (rc == 0 &&
+ ostid_id(&obj->ioo_oid) != ECHO_PERSISTENT_OBJID &&
+ (oa->o_valid & OBD_MD_FLFLAGS) != 0 &&
+ (oa->o_flags & OBD_FL_DEBUG_CHECK) != 0);
+ int j;
- if (vrc == 0)
- continue;
+ for (j = 0 ; j < obj->ioo_bufcnt ; j++, rb++) {
+ int vrc = echo_finalize_lb(oa, obj, rb, &pgs, &res[pgs],
+ verify);
+ if (vrc == 0)
+ continue;
- if (vrc == -EFAULT)
- GOTO(commitrw_cleanup, rc = vrc);
+ if (vrc == -EFAULT)
+ GOTO(commitrw_cleanup, rc = vrc);
- if (rc == 0)
- rc = vrc;
- }
+ if (rc == 0)
+ rc = vrc;
+ }
- }
+ }
- atomic_sub(pgs, &obd->u.echo.eo_prep);
+ atomic_sub(pgs, &obd->u.echo.eo_prep);
CDEBUG(D_PAGE, "%d pages remain after commit\n",
- atomic_read(&obd->u.echo.eo_prep));
+ atomic_read(&obd->u.echo.eo_prep));
RETURN(rc);
commitrw_cleanup:
- atomic_sub(pgs, &obd->u.echo.eo_prep);
+ atomic_sub(pgs, &obd->u.echo.eo_prep);
CERROR("cleaning up %d pages (%d obdos)\n",
niocount - pgs - 1, objcount);
- while (pgs ++ < niocount) {
- cfs_page_t *page = res[pgs].page;
+ while (pgs < niocount) {
+ struct page *page = res[pgs++].lnb_page;
if (page == NULL)
continue;
/* NB see comment above regarding persistent pages */
OBD_PAGE_FREE(page);
- atomic_dec(&obd->u.echo.eo_prep);
+ atomic_dec(&obd->u.echo.eo_prep);
}
return rc;
}
+LPROC_SEQ_FOPS_RO_TYPE(echo, uuid);
+static struct lprocfs_seq_vars lprocfs_echo_obd_vars[] = {
+ { .name = "uuid",
+ .fops = &echo_uuid_fops },
+ { 0 }
+};
+
static int echo_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
{
- struct lprocfs_static_vars lvars;
- int rc;
- int lock_flags = 0;
- struct ldlm_res_id res_id = {.name = {1}};
- char ns_name[48];
- ENTRY;
+ int rc;
+ __u64 lock_flags = 0;
+ struct ldlm_res_id res_id = {.name = {1}};
+ char ns_name[48];
+ ENTRY;
- spin_lock_init(&obd->u.echo.eo_lock);
- obd->u.echo.eo_lastino = ECHO_INIT_OBJID;
+ obd->u.echo.eo_obt.obt_magic = OBT_MAGIC;
+ spin_lock_init(&obd->u.echo.eo_lock);
+ obd->u.echo.eo_lastino = ECHO_INIT_OID;
sprintf(ns_name, "echotgt-%s", obd->obd_uuid.uuid);
obd->obd_namespace = ldlm_namespace_new(obd, ns_name,
LDLM_NAMESPACE_SERVER,
- LDLM_NAMESPACE_MODEST);
+ LDLM_NAMESPACE_MODEST,
+ LDLM_NS_TYPE_OST);
if (obd->obd_namespace == NULL) {
LBUG();
RETURN(-ENOMEM);
rc = ldlm_cli_enqueue_local(obd->obd_namespace, &res_id, LDLM_PLAIN,
NULL, LCK_NL, &lock_flags, NULL,
- ldlm_completion_ast, NULL, NULL,
- 0, NULL, NULL, &obd->u.echo.eo_nl_lock);
+ ldlm_completion_ast, NULL, NULL, 0,
+ LVB_T_NONE, NULL, &obd->u.echo.eo_nl_lock);
LASSERT (rc == ELDLM_OK);
- lprocfs_echo_init_vars(&lvars);
- if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0 &&
+ obd->obd_vars = lprocfs_echo_obd_vars;
+ if (lprocfs_seq_obd_setup(obd) == 0 &&
lprocfs_alloc_obd_stats(obd, LPROC_ECHO_LAST) == 0) {
lprocfs_counter_init(obd->obd_stats, LPROC_ECHO_READ_BYTES,
LPROCFS_CNTR_AVGMINMAX,
static int echo_cleanup(struct obd_device *obd)
{
- int leaked;
- ENTRY;
+ int leaked;
+ ENTRY;
- lprocfs_obd_cleanup(obd);
- lprocfs_free_obd_stats(obd);
+ lprocfs_obd_cleanup(obd);
+ lprocfs_free_obd_stats(obd);
- ldlm_lock_decref (&obd->u.echo.eo_nl_lock, LCK_NL);
+ ldlm_lock_decref(&obd->u.echo.eo_nl_lock, LCK_NL);
- /* XXX Bug 3413; wait for a bit to ensure the BL callback has
- * happened before calling ldlm_namespace_free() */
- cfs_schedule_timeout (CFS_TASK_UNINT, cfs_time_seconds(1));
+ /* XXX Bug 3413; wait for a bit to ensure the BL callback has
+ * happened before calling ldlm_namespace_free() */
+ schedule_timeout_and_set_state(TASK_UNINTERRUPTIBLE, cfs_time_seconds(1));
- ldlm_namespace_free(obd->obd_namespace, NULL, obd->obd_force);
- obd->obd_namespace = NULL;
+ ldlm_namespace_free(obd->obd_namespace, NULL, obd->obd_force);
+ obd->obd_namespace = NULL;
- leaked = atomic_read(&obd->u.echo.eo_prep);
- if (leaked != 0)
- CERROR("%d prep/commitrw pages leaked\n", leaked);
+ leaked = atomic_read(&obd->u.echo.eo_prep);
+ if (leaked != 0)
+ CERROR("%d prep/commitrw pages leaked\n", leaked);
- RETURN(0);
+ RETURN(0);
}
-static struct obd_ops echo_obd_ops = {
+struct obd_ops echo_obd_ops = {
.o_owner = THIS_MODULE,
.o_connect = echo_connect,
.o_disconnect = echo_disconnect,
.o_cleanup = echo_cleanup
};
-extern int echo_client_init(void);
-extern void echo_client_exit(void);
-
-static void
-echo_persistent_pages_fini (void)
+void echo_persistent_pages_fini(void)
{
int i;
}
}
-static int
-echo_persistent_pages_init (void)
-{
- cfs_page_t *pg;
- int i;
-
- for (i = 0; i < ECHO_PERSISTENT_PAGES; i++) {
- int gfp_mask = (i < ECHO_PERSISTENT_PAGES/2) ?
- CFS_ALLOC_STD : CFS_ALLOC_HIGHUSER;
-
- OBD_PAGE_ALLOC(pg, gfp_mask);
- if (pg == NULL) {
- echo_persistent_pages_fini ();
- return (-ENOMEM);
- }
-
- memset (cfs_kmap (pg), 0, CFS_PAGE_SIZE);
- cfs_kunmap (pg);
-
- echo_persistent_pages[i] = pg;
- }
-
- return (0);
-}
-
-static int __init obdecho_init(void)
+int echo_persistent_pages_init(void)
{
- struct lprocfs_static_vars lvars;
- int rc;
-
- ENTRY;
- LCONSOLE_INFO("Echo OBD driver; http://www.lustre.org/\n");
-
- LASSERT(CFS_PAGE_SIZE % OBD_ECHO_BLOCK_SIZE == 0);
+ struct page *pg;
+ int i;
- lprocfs_echo_init_vars(&lvars);
+ for (i = 0; i < ECHO_PERSISTENT_PAGES; i++) {
+ int gfp_mask = (i < ECHO_PERSISTENT_PAGES/2) ?
+ GFP_IOFS : GFP_HIGHUSER;
- rc = echo_persistent_pages_init ();
- if (rc != 0)
- goto failed_0;
+ OBD_PAGE_ALLOC(pg, gfp_mask);
+ if (pg == NULL) {
+ echo_persistent_pages_fini();
+ return -ENOMEM;
+ }
- rc = class_register_type(&echo_obd_ops, NULL, lvars.module_vars,
- LUSTRE_ECHO_NAME, NULL);
- if (rc != 0)
- goto failed_1;
+ memset (kmap (pg), 0, PAGE_CACHE_SIZE);
+ kunmap (pg);
- rc = echo_client_init();
- if (rc == 0)
- RETURN (0);
-
- class_unregister_type(LUSTRE_ECHO_NAME);
- failed_1:
- echo_persistent_pages_fini ();
- failed_0:
- RETURN(rc);
-}
+ echo_persistent_pages[i] = pg;
+ }
-static void /*__exit*/ obdecho_exit(void)
-{
- echo_client_exit();
- class_unregister_type(LUSTRE_ECHO_NAME);
- echo_persistent_pages_fini ();
+ return 0;
}
-
-MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
-MODULE_DESCRIPTION("Lustre Testing Echo OBD driver");
-MODULE_LICENSE("GPL");
-
-cfs_module(obdecho, "1.0.0", obdecho_init, obdecho_exit);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff