staging/lustre/obdecho: remove userspace LSM handling

In lustre/obdecho/echo_client.c, remove handling of lov_stripe_md
passed from userspace (since userspace never passes it). Remove the
LOV specific code (ed_next_islov) from the echo client (since it
doesn't work).

Remove echo_get_stripe_off_id() and all calls to it since the stripe
count of the passed in lsm is always 0 and the funciton does nothing
in this case. Remove the then unused lsm parameters of
echo_client_page_debug_setup() and echo_client_page_debug_check().

In the OBD_IOC_GETATTR and OBD_IOC_SETATTR cases of
echo_client_iocontrol() do not set the oi_md member of struct obd_info
since only LOV OBD methods access it.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/12446
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5814
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lustre/include/obd.h b/drivers/staging/lustre/lustre/include/obd.h
index bcbe613..86897c2 100644 (file)
--- a/drivers/staging/lustre/lustre/include/obd.h
+++ b/drivers/staging/lustre/lustre/include/obd.h
@@ -375,7 +375,6 @@ struct echo_client_obd {
        spinlock_t              ec_lock;
        struct list_head           ec_objects;
        struct list_head           ec_locks;
-       int               ec_nstripes;
        __u64           ec_unique;
 };
 

diff --git a/drivers/staging/lustre/lustre/obdecho/echo_client.c b/drivers/staging/lustre/lustre/obdecho/echo_client.c
index ec8a26b..5b76c22 100644 (file)
--- a/drivers/staging/lustre/lustre/obdecho/echo_client.c
+++ b/drivers/staging/lustre/lustre/obdecho/echo_client.c
@@ -60,7 +60,6 @@ struct echo_device {
        struct cl_site    ed_site_myself;
        struct cl_site   *ed_site;
        struct lu_device       *ed_next;
-       int                  ed_next_islov;
 };
 
 struct echo_object {
@@ -767,14 +766,6 @@ static struct lu_device *echo_device_alloc(const struct lu_env *env,
                if (rc)
                        goto out;
 
-               /* Tricky 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);
        }
@@ -960,20 +951,11 @@ 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) {
-               if (!d->ed_next_islov) {
-                       struct lov_oinfo *oinfo = lsm->lsm_oinfo[0];
-
-                       LASSERT(oinfo != NULL);
-                       oinfo->loi_oi = lsm->lsm_oi;
-                       conf->eoc_cl.u.coc_oinfo = oinfo;
-               } else {
-                       struct lustre_md *md;
+               struct lov_oinfo *oinfo = lsm->lsm_oinfo[0];
 
-                       md = &info->eti_md;
-                       memset(md, 0, sizeof(*md));
-                       md->lsm = lsm;
-                       conf->eoc_cl.u.coc_md = md;
-               }
+               LASSERT(oinfo);
+               oinfo->loi_oi = lsm->lsm_oi;
+               conf->eoc_cl.u.coc_oinfo = oinfo;
        }
        conf->eoc_md = lsmp;
 
@@ -1219,38 +1201,8 @@ out:
 
 static u64 last_object_id;
 
-static int
-echo_copyin_lsm(struct echo_device *ed, struct lov_stripe_md *lsm,
-               struct lov_stripe_md __user *ulsm, int ulsm_nob)
-{
-       struct echo_client_obd *ec = ed->ed_ec;
-       struct lov_oinfo **p;
-       int                  i;
-
-       if (ulsm_nob < sizeof(*lsm))
-               return -EINVAL;
-
-       if (copy_from_user(lsm, ulsm, sizeof(*lsm)))
-               return -EFAULT;
-
-       if (lsm->lsm_stripe_count > ec->ec_nstripes ||
-           lsm->lsm_magic != LOV_MAGIC ||
-           (lsm->lsm_stripe_size & (~CFS_PAGE_MASK)) != 0 ||
-           ((__u64)lsm->lsm_stripe_size * lsm->lsm_stripe_count > ~0UL))
-               return -EINVAL;
-
-       for (i = 0, p = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++, p++) {
-               struct lov_oinfo __user *up;
-               if (get_user(up, ulsm->lsm_oinfo + i) ||
-                   copy_from_user(*p, up, sizeof(struct lov_oinfo)))
-                       return -EFAULT;
-       }
-       return 0;
-}
-
 static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
-                             int on_target, struct obdo *oa, void *ulsm,
-                             int ulsm_nob, struct obd_trans_info *oti)
+                             struct obdo *oa, struct obd_trans_info *oti)
 {
        struct echo_object     *eco;
        struct echo_client_obd *ec = ed->ed_ec;
@@ -1258,9 +1210,7 @@ static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
        int                  rc;
        int                  created = 0;
 
-       if ((oa->o_valid & OBD_MD_FLID) == 0 && /* no obj id */
-           (on_target ||                      /* set_stripe */
-            ec->ec_nstripes != 0)) {      /* LOV */
+       if ((oa->o_valid & OBD_MD_FLID) == 0) { /* no obj id */
                CERROR("No valid oid\n");
                return -EINVAL;
        }
@@ -1271,32 +1221,7 @@ static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
                goto failed;
        }
 
-       if (ulsm != NULL) {
-               int i, idx;
-
-               rc = echo_copyin_lsm(ed, lsm, ulsm, ulsm_nob);
-               if (rc != 0)
-                       goto failed;
-
-               if (lsm->lsm_stripe_count == 0)
-                       lsm->lsm_stripe_count = ec->ec_nstripes;
-
-               if (lsm->lsm_stripe_size == 0)
-                       lsm->lsm_stripe_size = PAGE_CACHE_SIZE;
-
-               idx = cfs_rand();
-
-               /* setup stripes: indices + default ids if required */
-               for (i = 0; i < lsm->lsm_stripe_count; i++) {
-                       if (ostid_id(&lsm->lsm_oinfo[i]->loi_oi) == 0)
-                               lsm->lsm_oinfo[i]->loi_oi = lsm->lsm_oi;
-
-                       lsm->lsm_oinfo[i]->loi_ost_idx =
-                               (idx + i) % ec->ec_nstripes;
-               }
-       }
-
-       /* setup object ID here for !on_target and LOV hint */
+       /* setup object ID here */
        if (oa->o_valid & OBD_MD_FLID) {
                LASSERT(oa->o_valid & OBD_MD_FLGROUP);
                lsm->lsm_oi = oa->o_oi;
@@ -1305,18 +1230,16 @@ static int echo_create_object(const struct lu_env *env, struct echo_device *ed,
        if (ostid_id(&lsm->lsm_oi) == 0)
                ostid_set_id(&lsm->lsm_oi, ++last_object_id);
 
-       rc = 0;
-       if (on_target) {
-               /* Only echo objects are allowed to be created */
-               LASSERT((oa->o_valid & OBD_MD_FLGROUP) &&
-                       (ostid_seq(&oa->o_oi) == FID_SEQ_ECHO));
-               rc = obd_create(env, ec->ec_exp, oa, &lsm, oti);
-               if (rc != 0) {
-                       CERROR("Cannot create objects: rc = %d\n", rc);
-                       goto failed;
-               }
-               created = 1;
+       /* Only echo objects are allowed to be created */
+       LASSERT((oa->o_valid & OBD_MD_FLGROUP) &&
+               (ostid_seq(&oa->o_oi) == FID_SEQ_ECHO));
+
+       rc = obd_create(env, ec->ec_exp, oa, &lsm, 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;
@@ -1380,37 +1303,7 @@ static void echo_put_object(struct echo_object *eco)
 }
 
 static void
-echo_get_stripe_off_id(struct lov_stripe_md *lsm, u64 *offp, u64 *idp)
-{
-       unsigned long stripe_count;
-       unsigned long stripe_size;
-       unsigned long width;
-       unsigned long woffset;
-       int        stripe_index;
-       u64       offset;
-
-       if (lsm->lsm_stripe_count <= 1)
-               return;
-
-       offset       = *offp;
-       stripe_size  = lsm->lsm_stripe_size;
-       stripe_count = lsm->lsm_stripe_count;
-
-       /* width = # bytes in all stripes */
-       width = stripe_size * stripe_count;
-
-       /* woffset = offset within a width; offset = whole number of widths */
-       woffset = do_div(offset, width);
-
-       stripe_index = woffset / stripe_size;
-
-       *idp = ostid_id(&lsm->lsm_oinfo[stripe_index]->loi_oi);
-       *offp = offset * stripe_size + woffset % stripe_size;
-}
-
-static void
-echo_client_page_debug_setup(struct lov_stripe_md *lsm,
-                            struct page *page, int rw, u64 id,
+echo_client_page_debug_setup(struct page *page, int rw, u64 id,
                             u64 offset, u64 count)
 {
        char    *addr;
@@ -1427,7 +1320,6 @@ echo_client_page_debug_setup(struct lov_stripe_md *lsm,
                if (rw == OBD_BRW_WRITE) {
                        stripe_off = offset + delta;
                        stripe_id = id;
-                       echo_get_stripe_off_id(lsm, &stripe_off, &stripe_id);
                } else {
                        stripe_off = 0xdeadbeef00c0ffeeULL;
                        stripe_id = 0xdeadbeef00c0ffeeULL;
@@ -1439,8 +1331,7 @@ echo_client_page_debug_setup(struct lov_stripe_md *lsm,
        kunmap(page);
 }
 
-static int echo_client_page_debug_check(struct lov_stripe_md *lsm,
-                                       struct page *page, u64 id,
+static int echo_client_page_debug_check(struct page *page, u64 id,
                                        u64 offset, u64 count)
 {
        u64     stripe_off;
@@ -1458,7 +1349,6 @@ static int echo_client_page_debug_check(struct lov_stripe_md *lsm,
        for (rc = delta = 0; delta < PAGE_CACHE_SIZE; delta += OBD_ECHO_BLOCK_SIZE) {
                stripe_off = offset + delta;
                stripe_id = id;
-               echo_get_stripe_off_id(lsm, &stripe_off, &stripe_id);
 
                rc2 = block_debug_check("test_brw",
                                        addr + delta, OBD_ECHO_BLOCK_SIZE,
@@ -1478,7 +1368,6 @@ static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
                            u64 count, int async,
                            struct obd_trans_info *oti)
 {
-       struct lov_stripe_md   *lsm = eco->eo_lsm;
        u32            npages;
        struct brw_page *pga;
        struct brw_page *pgp;
@@ -1497,8 +1386,6 @@ static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
        gfp_mask = ((ostid_id(&oa->o_oi) & 2) == 0) ? GFP_KERNEL : GFP_HIGHUSER;
 
        LASSERT(rw == OBD_BRW_WRITE || rw == OBD_BRW_READ);
-       LASSERT(lsm != NULL);
-       LASSERT(ostid_id(&lsm->lsm_oi) == ostid_id(&oa->o_oi));
 
        if (count <= 0 ||
            (count & (~CFS_PAGE_MASK)) != 0)
@@ -1537,7 +1424,7 @@ static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
                pgp->flag = brw_flags;
 
                if (verify)
-                       echo_client_page_debug_setup(lsm, pgp->pg, rw,
+                       echo_client_page_debug_setup(pgp->pg, rw,
                                                     ostid_id(&oa->o_oi), off,
                                                     pgp->count);
        }
@@ -1557,7 +1444,7 @@ static int echo_client_kbrw(struct echo_device *ed, int rw, struct obdo *oa,
                if (verify) {
                        int vrc;
 
-                       vrc = echo_client_page_debug_check(lsm, pgp->pg,
+                       vrc = echo_client_page_debug_check(pgp->pg,
                                                           ostid_id(&oa->o_oi),
                                                           pgp->off, pgp->count);
                        if (vrc != 0 && rc == 0)
@@ -1577,7 +1464,6 @@ static int echo_client_prep_commit(const struct lu_env *env,
                                   u64 batch, struct obd_trans_info *oti,
                                   int async)
 {
-       struct lov_stripe_md *lsm = eco->eo_lsm;
        struct obd_ioobj ioo;
        struct niobuf_local *lnb;
        struct niobuf_remote *rnb;
@@ -1585,8 +1471,7 @@ static int echo_client_prep_commit(const struct lu_env *env,
        u64 npages, tot_pages;
        int i, ret = 0, brw_flags = 0;
 
-       if (count <= 0 || (count & (~CFS_PAGE_MASK)) != 0 ||
-           (lsm != NULL && ostid_id(&lsm->lsm_oi) != ostid_id(&oa->o_oi)))
+       if (count <= 0 || (count & (~CFS_PAGE_MASK)) != 0)
                return -EINVAL;
 
        npages = batch >> PAGE_CACHE_SHIFT;
@@ -1645,12 +1530,12 @@ static int echo_client_prep_commit(const struct lu_env *env,
                                continue;
 
                        if (rw == OBD_BRW_WRITE)
-                               echo_client_page_debug_setup(lsm, page, rw,
+                               echo_client_page_debug_setup(page, rw,
                                                            ostid_id(&oa->o_oi),
                                                             rnb[i].offset,
                                                             rnb[i].len);
                        else
-                               echo_client_page_debug_check(lsm, page,
+                               echo_client_page_debug_check(page,
                                                            ostid_id(&oa->o_oi),
                                                             rnb[i].offset,
                                                             rnb[i].len);
@@ -1780,8 +1665,7 @@ echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                        goto out;
                }
 
-               rc = echo_create_object(env, ed, 1, oa, data->ioc_pbuf1,
-                                       data->ioc_plen1, &dummy_oti);
+               rc = echo_create_object(env, ed, oa, &dummy_oti);
                goto out;
 
        case OBD_IOC_DESTROY:
@@ -1792,7 +1676,7 @@ echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
 
                rc = echo_get_object(&eco, ed, oa);
                if (rc == 0) {
-                       rc = obd_destroy(env, ec->ec_exp, oa, eco->eo_lsm,
+                       rc = obd_destroy(env, ec->ec_exp, oa, NULL,
                                         &dummy_oti, NULL);
                        if (rc == 0)
                                eco->eo_deleted = 1;
@@ -1803,10 +1687,10 @@ echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
        case OBD_IOC_GETATTR:
                rc = echo_get_object(&eco, ed, oa);
                if (rc == 0) {
-                       struct obd_info oinfo = { };
+                       struct obd_info oinfo = {
+                               .oi_oa = oa,
+                       };
 
-                       oinfo.oi_md = eco->eo_lsm;
-                       oinfo.oi_oa = oa;
                        rc = obd_getattr(env, ec->ec_exp, &oinfo);
                        echo_put_object(eco);
                }
@@ -1820,10 +1704,9 @@ echo_client_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
 
                rc = echo_get_object(&eco, ed, oa);
                if (rc == 0) {
-                       struct obd_info oinfo = { };
-
-                       oinfo.oi_oa = oa;
-                       oinfo.oi_md = eco->eo_lsm;
+                       struct obd_info oinfo = {
+                               .oi_oa = oa,
+                       };
 
                        rc = obd_setattr(env, ec->ec_exp, &oinfo, NULL);
                        echo_put_object(eco);
@@ -1888,7 +1771,6 @@ static int echo_client_setup(const struct lu_env *env,
        INIT_LIST_HEAD(&ec->ec_objects);
        INIT_LIST_HEAD(&ec->ec_locks);
        ec->ec_unique = 0;
-       ec->ec_nstripes = 0;
 
        ocd = kzalloc(sizeof(*ocd), GFP_NOFS);
        if (!ocd) {