staging: lustre: echo: replace lov_stripe_md with lov_oinfo
authorJohn L. Hammond <john.hammond@intel.com>
Sun, 18 Sep 2016 20:38:11 +0000 (16:38 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 19 Sep 2016 07:51:51 +0000 (09:51 +0200)
In echo_client replace uses of struct lov_stripe_md with struct
lov_oinfo (since the instances of the former really only contained a
single instance of the latter). Remove the then unneccessary functions
echo_alloc_memmd(), echo_free_memmd(), osc_unpackmd(), and
obd_alloc_memmd(). Remove the struct lov_stripe_md * parameter from
obd_create().

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5418
Reviewed-on: http://review.whamcloud.com/12447
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/lustre/lustre/include/obd.h
drivers/staging/lustre/lustre/include/obd_class.h
drivers/staging/lustre/lustre/obdecho/echo_client.c
drivers/staging/lustre/lustre/osc/osc_request.c

index 04a9b974396cfd1d8ce67e4797b65fc91e1d91ba..ca638919ab4d65271522286959de4e7ad58d487b 100644 (file)
@@ -867,8 +867,7 @@ struct obd_ops {
                        struct lov_stripe_md **mem_tgt,
                        struct lov_mds_md *disk_src, int disk_len);
        int (*create)(const struct lu_env *env, struct obd_export *exp,
-                     struct obdo *oa, struct lov_stripe_md **ea,
-                     struct obd_trans_info *oti);
+                     struct obdo *oa, struct obd_trans_info *oti);
        int (*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);
index 32459522c50197e3cce0d84ff2cc7404f7ce68f1..2bf2826255c7638a460957673d53fbe81bafa89c 100644 (file)
@@ -677,15 +677,6 @@ static inline int obd_unpackmd(struct obd_export *exp,
        return rc;
 }
 
-/* helper functions */
-static inline int obd_alloc_memmd(struct obd_export *exp,
-                                 struct lov_stripe_md **mem_tgt)
-{
-       LASSERT(mem_tgt);
-       LASSERT(!*mem_tgt);
-       return obd_unpackmd(exp, mem_tgt, NULL, 0);
-}
-
 static inline int obd_free_memmd(struct obd_export *exp,
                                 struct lov_stripe_md **mem_tgt)
 {
@@ -699,15 +690,14 @@ static inline int obd_free_memmd(struct obd_export *exp,
 }
 
 static inline int obd_create(const struct lu_env *env, struct obd_export *exp,
-                            struct obdo *obdo, struct lov_stripe_md **ea,
-                            struct obd_trans_info *oti)
+                            struct obdo *obdo, struct obd_trans_info *oti)
 {
        int rc;
 
        EXP_CHECK_DT_OP(exp, create);
        EXP_COUNTER_INCREMENT(exp, create);
 
-       rc = OBP(exp->exp_obd, create)(env, exp, obdo, ea, oti);
+       rc = OBP(exp->exp_obd, create)(env, exp, obdo, oti);
        return rc;
 }
 
index cddc2d247fe9a14d34fd97e4e116ad3deb2f9e43..3218ca1e69b855371e8e8078eadde389d147aba4 100644 (file)
@@ -65,14 +65,14 @@ struct echo_object {
 
        struct echo_device     *eo_dev;
        struct list_head              eo_obj_chain;
-       struct lov_stripe_md   *eo_lsm;
+       struct lov_oinfo       *eo_oinfo;
        atomic_t            eo_npages;
        int                  eo_deleted;
 };
 
 struct echo_object_conf {
        struct cl_object_conf  eoc_cl;
-       struct lov_stripe_md **eoc_md;
+       struct lov_oinfo      **eoc_oinfo;
 };
 
 struct echo_page {
@@ -153,9 +153,6 @@ struct echo_object_conf *cl2echo_conf(const struct cl_object_conf *c)
 }
 
 /** @} 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_object_brw(struct echo_object *eco, int rw, u64 offset,
                              struct page **pages, int npages, int async);
@@ -414,10 +411,13 @@ static int echo_object_init(const struct lu_env *env, struct lu_object *obj,
        cconf = lu2cl_conf(conf);
        econf = cl2echo_conf(cconf);
 
-       LASSERT(econf->eoc_md);
-       eco->eo_lsm = *econf->eoc_md;
-       /* clear the lsm pointer so that it won't get freed. */
-       *econf->eoc_md = NULL;
+       LASSERT(econf->eoc_oinfo);
+       /*
+        * Transfer the oinfo pointer to eco that it won't be
+        * freed.
+        */
+       eco->eo_oinfo = *econf->eoc_oinfo;
+       *econf->eoc_oinfo = NULL;
 
        eco->eo_dev = ed;
        atomic_set(&eco->eo_npages, 0);
@@ -430,52 +430,6 @@ static int echo_object_init(const struct lu_env *env, struct lu_object *obj,
        return 0;
 }
 
-/* taken from osc_unpackmd() */
-static int echo_alloc_memmd(struct echo_device *ed,
-                           struct lov_stripe_md **lsmp)
-{
-       int lsm_size;
-
-       /* If export is lov/osc then use their obd method */
-       if (ed->ed_next)
-               return obd_alloc_memmd(ed->ed_ec->ec_exp, lsmp);
-       /* OFD has no unpackmd method, do everything here */
-       lsm_size = lov_stripe_md_size(1);
-
-       LASSERT(!*lsmp);
-       *lsmp = kzalloc(lsm_size, GFP_NOFS);
-       if (!*lsmp)
-               return -ENOMEM;
-
-       (*lsmp)->lsm_oinfo[0] = kzalloc(sizeof(struct lov_oinfo), GFP_NOFS);
-       if (!(*lsmp)->lsm_oinfo[0]) {
-               kfree(*lsmp);
-               return -ENOMEM;
-       }
-
-       loi_init((*lsmp)->lsm_oinfo[0]);
-       (*lsmp)->lsm_maxbytes = LUSTRE_EXT3_STRIPE_MAXBYTES;
-       ostid_set_seq_echo(&(*lsmp)->lsm_oi);
-
-       return lsm_size;
-}
-
-static int echo_free_memmd(struct echo_device *ed, struct lov_stripe_md **lsmp)
-{
-       int lsm_size;
-
-       /* If export is lov/osc then use their obd method */
-       if (ed->ed_next)
-               return obd_free_memmd(ed->ed_ec->ec_exp, lsmp);
-       /* OFD has no unpackmd method, do everything here */
-       lsm_size = lov_stripe_md_size(1);
-
-       kfree((*lsmp)->lsm_oinfo[0]);
-       kfree(*lsmp);
-       *lsmp = NULL;
-       return 0;
-}
-
 static void echo_object_free(const struct lu_env *env, struct lu_object *obj)
 {
        struct echo_object *eco    = cl2echo_obj(lu2cl(obj));
@@ -490,8 +444,7 @@ static void echo_object_free(const struct lu_env *env, struct lu_object *obj)
        lu_object_fini(obj);
        lu_object_header_fini(obj->lo_header);
 
-       if (eco->eo_lsm)
-               echo_free_memmd(eco->eo_dev, &eco->eo_lsm);
+       kfree(eco->eo_oinfo);
        kmem_cache_free(echo_object_kmem, eco);
 }
 
@@ -865,25 +818,21 @@ static struct lu_device_type echo_device_type = {
  */
 
 /* Interfaces to echo client obd device */
-static struct echo_object *cl_echo_object_find(struct echo_device *d,
-                                              struct lov_stripe_md **lsmp)
+static struct echo_object *
+cl_echo_object_find(struct echo_device *d, const struct ost_id *oi)
 {
        struct lu_env *env;
        struct echo_thread_info *info;
        struct echo_object_conf *conf;
-       struct lov_stripe_md    *lsm;
+       struct lov_oinfo *oinfo = NULL;
        struct echo_object *eco;
        struct cl_object   *obj;
        struct lu_fid *fid;
        int refcheck;
        int rc;
 
-       LASSERT(lsmp);
-       lsm = *lsmp;
-       LASSERT(lsm);
-       LASSERTF(ostid_id(&lsm->lsm_oi) != 0, DOSTID"\n", POSTID(&lsm->lsm_oi));
-       LASSERTF(ostid_seq(&lsm->lsm_oi) == FID_SEQ_ECHO, DOSTID"\n",
-                POSTID(&lsm->lsm_oi));
+       LASSERTF(ostid_id(oi), DOSTID "\n", POSTID(oi));
+       LASSERTF(ostid_seq(oi) == FID_SEQ_ECHO, DOSTID "\n", POSTID(oi));
 
        /* Never return an object if the obd is to be freed. */
        if (echo_dev2cl(d)->cd_lu_dev.ld_obd->obd_stopping)
@@ -896,16 +845,24 @@ static struct echo_object *cl_echo_object_find(struct echo_device *d,
        info = echo_env_info(env);
        conf = &info->eti_conf;
        if (d->ed_next) {
-               struct lov_oinfo *oinfo = lsm->lsm_oinfo[0];
+               oinfo = kzalloc(sizeof(*oinfo), GFP_NOFS);
+               if (!oinfo) {
+                       eco = ERR_PTR(-ENOMEM);
+                       goto out;
+               }
 
-               LASSERT(oinfo);
-               oinfo->loi_oi = lsm->lsm_oi;
+               oinfo->loi_oi = *oi;
                conf->eoc_cl.u.coc_oinfo = oinfo;
        }
-       conf->eoc_md = lsmp;
+
+       /*
+        * If echo_object_init() is successful then ownership of oinfo
+        * is transferred to the object.
+        */
+       conf->eoc_oinfo = &oinfo;
 
        fid  = &info->eti_fid;
-       rc = ostid_to_fid(fid, &lsm->lsm_oi, 0);
+       rc = ostid_to_fid(fid, (struct ost_id *)oi, 0);
        if (rc != 0) {
                eco = ERR_PTR(rc);
                goto out;
@@ -928,6 +885,7 @@ static struct echo_object *cl_echo_object_find(struct echo_device *d,
        }
 
 out:
+       kfree(oinfo);
        cl_env_put(env, &refcheck);
        return eco;
 }
@@ -1146,7 +1104,6 @@ static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
 {
        struct echo_object     *eco;
        struct echo_client_obd *ec = ed->ed_ec;
-       struct lov_stripe_md   *lsm = NULL;
        int                  rc;
        int                  created = 0;
 
@@ -1157,30 +1114,19 @@ static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
                return -EINVAL;
        }
 
-       rc = echo_alloc_memmd(ed, &lsm);
-       if (rc < 0) {
-               CERROR("Cannot allocate md: rc = %d\n", rc);
-               goto failed;
-       }
-
-       /* setup object ID here */
-       lsm->lsm_oi = oa->o_oi;
+       if (!ostid_id(&oa->o_oi))
+               ostid_set_id(&oa->o_oi, ++last_object_id);
 
-       if (ostid_id(&lsm->lsm_oi) == 0)
-               ostid_set_id(&lsm->lsm_oi, ++last_object_id);
-
-       rc = obd_create(env, ec->ec_exp, oa, &lsm, oti);
+       rc = obd_create(env, ec->ec_exp, oa, oti);
        if (rc != 0) {
                CERROR("Cannot create objects: rc = %d\n", rc);
                goto failed;
        }
        created = 1;
 
-       /* See what object ID we were given */
-       oa->o_oi = lsm->lsm_oi;
        oa->o_valid |= OBD_MD_FLID;
 
-       eco = cl_echo_object_find(ed, &lsm);
+       eco = cl_echo_object_find(ed, &oa->o_oi);
        if (IS_ERR(eco)) {
                rc = PTR_ERR(eco);
                goto failed;
@@ -1191,9 +1137,7 @@ static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
 
  failed:
        if (created && rc)
-               obd_destroy(env, ec->ec_exp, oa, lsm, oti, NULL);
-       if (lsm)
-               echo_free_memmd(ed, &lsm);
+               obd_destroy(env, ec->ec_exp, oa, NULL, oti, NULL);
        if (rc)
                CERROR("create object failed with: rc = %d\n", rc);
        return rc;
@@ -1202,32 +1146,21 @@ static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
 static int echo_get_object(struct echo_object **ecop, struct echo_device *ed,
                           struct obdo *oa)
 {
-       struct lov_stripe_md   *lsm = NULL;
        struct echo_object     *eco;
        int                  rc;
 
-       if ((oa->o_valid & OBD_MD_FLID) == 0 || ostid_id(&oa->o_oi) == 0) {
-               /* disallow use of object id 0 */
-               CERROR("No valid oid\n");
+       if (!(oa->o_valid & OBD_MD_FLID) || !(oa->o_valid & OBD_MD_FLGROUP) ||
+           !ostid_id(&oa->o_oi)) {
+               CERROR("invalid oid " DOSTID "\n", POSTID(&oa->o_oi));
                return -EINVAL;
        }
 
-       rc = echo_alloc_memmd(ed, &lsm);
-       if (rc < 0)
-               return rc;
-
-       lsm->lsm_oi = oa->o_oi;
-       if (!(oa->o_valid & OBD_MD_FLGROUP))
-               ostid_set_seq_echo(&lsm->lsm_oi);
-
        rc = 0;
-       eco = cl_echo_object_find(ed, &lsm);
+       eco = cl_echo_object_find(ed, &oa->o_oi);
        if (!IS_ERR(eco))
                *ecop = eco;
        else
                rc = PTR_ERR(eco);
-       if (lsm)
-               echo_free_memmd(ed, &lsm);
        return rc;
 }
 
index 2b37c364d8530c4ec6504feaa98cf0a7522e2b13..7fa35e9c690add90d50bca63717071bc25250aa7 100644 (file)
@@ -398,24 +398,16 @@ static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
                                      oinfo->oi_cb_up, oinfo, rqset);
 }
 
-static int osc_real_create(struct obd_export *exp, struct obdo *oa,
-                          struct lov_stripe_md **ea,
-                          struct obd_trans_info *oti)
+static int osc_create(const struct lu_env *env, struct obd_export *exp,
+                     struct obdo *oa, struct obd_trans_info *oti)
 {
        struct ptlrpc_request *req;
        struct ost_body *body;
-       struct lov_stripe_md *lsm;
        int rc;
 
        LASSERT(oa);
-       LASSERT(ea);
-
-       lsm = *ea;
-       if (!lsm) {
-               rc = obd_alloc_memmd(exp, &lsm);
-               if (rc < 0)
-                       return rc;
-       }
+       LASSERT(oa->o_valid & OBD_MD_FLGROUP);
+       LASSERT(fid_seq_is_echo(ostid_seq(&oa->o_oi)));
 
        req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE);
        if (!req) {
@@ -461,13 +453,6 @@ static int osc_real_create(struct obd_export *exp, struct obdo *oa,
        oa->o_blksize = cli_brw_size(exp->exp_obd);
        oa->o_valid |= OBD_MD_FLBLKSZ;
 
-       /* XXX LOV STACKING: the lsm that is passed to us from LOV does not
-        * have valid lsm_oinfo data structs, so don't go touching that.
-        * This needs to be fixed in a big way.
-        */
-       lsm->lsm_oi = oa->o_oi;
-       *ea = lsm;
-
        if (oti && oa->o_valid & OBD_MD_FLCOOKIE) {
                if (!oti->oti_logcookies)
                        oti->oti_logcookies = &oti->oti_onecookie;
@@ -479,8 +464,6 @@ static int osc_real_create(struct obd_export *exp, struct obdo *oa,
 out_req:
        ptlrpc_req_finished(req);
 out:
-       if (rc && !*ea)
-               obd_free_memmd(exp, &lsm);
        return rc;
 }
 
@@ -656,25 +639,6 @@ static int osc_can_send_destroy(struct client_obd *cli)
        return 0;
 }
 
-static int osc_create(const struct lu_env *env, struct obd_export *exp,
-                     struct obdo *oa, struct lov_stripe_md **ea,
-                     struct obd_trans_info *oti)
-{
-       int rc = 0;
-
-       LASSERT(oa);
-       LASSERT(ea);
-       LASSERT(oa->o_valid & OBD_MD_FLGROUP);
-
-       if (!fid_seq_is_mdt(ostid_seq(&oa->o_oi)))
-               return osc_real_create(exp, oa, ea, oti);
-
-       /* we should not get here anymore */
-       LBUG();
-
-       return rc;
-}
-
 /* Destroy requests can be async always on the client, and we don't even really
  * care about the return code since the client cannot do anything at all about
  * a destroy failure.