[HPDD-discuss] [PATCH] staging: lustre: llite: drop uses of OBD free functions

From: Julia Lawall <Julia.Lawall(a)lip6.fr&gt; Replace OBD_FREE and OBD_FREE_PTR by kfree. The semantic patch that makes these changes is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression ptr, size; @@ - OBD_FREE(ptr, size); + kfree(ptr); @@ expression ptr; @@ - OBD_FREE_PTR(ptr); + kfree(ptr); // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall(a)lip6.fr&gt; --- The corresponding ALLOC functions were already replaced by kalloc in this code. drivers/staging/lustre/lustre/llite/dcache.c | 6 +-- drivers/staging/lustre/lustre/llite/dir.c | 34 +++++++++---------- drivers/staging/lustre/lustre/llite/file.c | 36 ++++++++++----------- drivers/staging/lustre/lustre/llite/llite_close.c | 6 +-- drivers/staging/lustre/lustre/llite/llite_lib.c | 31 ++++++++---------- drivers/staging/lustre/lustre/llite/llite_nfs.c | 2 - drivers/staging/lustre/lustre/llite/llite_rmtacl.c | 4 +- drivers/staging/lustre/lustre/llite/lloop.c | 8 ++-- drivers/staging/lustre/lustre/llite/namei.c | 2 - drivers/staging/lustre/lustre/llite/statahead.c | 20 +++++------ drivers/staging/lustre/lustre/llite/xattr_cache.c | 6 +-- 11 files changed, 77 insertions(+), 78 deletions(-) diff --git a/drivers/staging/lustre/lustre/llite/dcache.c b/drivers/staging/lustre/lustre/llite/dcache.c index fe1fd05..87b6a80 100644 --- a/drivers/staging/lustre/lustre/llite/dcache.c +++ b/drivers/staging/lustre/lustre/llite/dcache.c @@ -52,7 +52,7 @@ static void free_dentry_data(struct rcu_head *head) struct ll_dentry_data *lld; lld = container_of(head, struct ll_dentry_data, lld_rcu_head); - OBD_FREE_PTR(lld); + kfree(lld); } /* should NOT be called with the dcache lock, see fs/dcache.c */ @@ -67,7 +67,7 @@ static void ll_release(struct dentry *de) if (lld->lld_it) { ll_intent_release(lld->lld_it); - OBD_FREE(lld->lld_it, sizeof(*lld->lld_it)); + kfree(lld->lld_it); } de->d_fsdata = NULL; @@ -194,7 +194,7 @@ int ll_d_init(struct dentry *de) de->d_fsdata = lld; __d_lustre_invalidate(de); } else { - OBD_FREE_PTR(lld); + kfree(lld); } spin_unlock(&de->d_lock); } else { diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c index a5bc694..0f5d57c 100644 --- a/drivers/staging/lustre/lustre/llite/dir.c +++ b/drivers/staging/lustre/lustre/llite/dir.c @@ -239,7 +239,7 @@ static int ll_dir_filler(void *_hash, struct page *page0) ll_pagevec_lru_add_file(&lru_pvec); if (page_pool != &page0) - OBD_FREE(page_pool, sizeof(struct page *) * max_pages); + kfree(page_pool); return rc; } @@ -650,7 +650,7 @@ static int ll_send_mgc_param(struct obd_export *mgc, char *string) sizeof(struct mgs_send_param), msp, NULL); if (rc) CERROR("Failed to set parameter: %d\n", rc); - OBD_FREE_PTR(msp); + kfree(msp); return rc; } @@ -787,7 +787,7 @@ int ll_dir_setstripe(struct inode *inode, struct lov_user_md *lump, end: if (param != NULL) - OBD_FREE(param, MGS_PARAM_MAXLEN); + kfree(param); } return rc; } @@ -1072,7 +1072,7 @@ static int copy_and_ioctl(int cmd, struct obd_export *exp, rc = obd_iocontrol(cmd, exp, size, copy, NULL); out: - OBD_FREE(copy, size); + kfree(copy); return rc; } @@ -1163,7 +1163,7 @@ static int quotactl_ioctl(struct ll_sb_info *sbi, struct if_quotactl *qctl) oqctl->qc_cmd = Q_QUOTAOFF; obd_quotactl(sbi->ll_md_exp, oqctl); } - OBD_FREE_PTR(oqctl); + kfree(oqctl); return rc; } /* If QIF_SPACE is not set, client should collect the @@ -1206,11 +1206,11 @@ static int quotactl_ioctl(struct ll_sb_info *sbi, struct if_quotactl *qctl) oqctl->qc_dqblk.dqb_valid &= ~QIF_SPACE; } - OBD_FREE_PTR(oqctl_tmp); + kfree(oqctl_tmp); } out: QCTL_COPY(qctl, oqctl); - OBD_FREE_PTR(oqctl); + kfree(oqctl); } return rc; @@ -1437,7 +1437,7 @@ lmv_out_free: } free_lmv: if (tmp) - OBD_FREE(tmp, lum_size); + kfree(tmp); return rc; } case LL_IOC_REMOVE_ENTRY: { @@ -1657,7 +1657,7 @@ free_lmm: if (rc < 0) CDEBUG(D_INFO, "obd_quotacheck failed: rc %d\n", rc); - OBD_FREE_PTR(oqctl); + kfree(oqctl); return error ?: rc; } case OBD_IOC_POLL_QUOTACHECK: { @@ -1691,7 +1691,7 @@ free_lmm: goto out_poll; } out_poll: - OBD_FREE_PTR(check); + kfree(check); return rc; } case LL_IOC_QUOTACTL: { @@ -1712,7 +1712,7 @@ out_poll: rc = -EFAULT; out_quotactl: - OBD_FREE_PTR(qctl); + kfree(qctl); return rc; } case OBD_IOC_GETDTNAME: @@ -1781,13 +1781,13 @@ out_quotactl: /* We don't know the true size yet; copy the fixed-size part */ if (copy_from_user(hur, (void *)arg, sizeof(*hur))) { - OBD_FREE_PTR(hur); + kfree(hur); return -EFAULT; } /* Compute the whole struct size */ totalsize = hur_len(hur); - OBD_FREE_PTR(hur); + kfree(hur); if (totalsize < 0) return -E2BIG; @@ -1865,7 +1865,7 @@ out_quotactl: if (!copy) return -ENOMEM; if (copy_from_user(copy, (char *)arg, sizeof(*copy))) { - OBD_FREE_PTR(copy); + kfree(copy); return -EFAULT; } @@ -1873,7 +1873,7 @@ out_quotactl: if (copy_to_user((char *)arg, copy, sizeof(*copy))) rc = -EFAULT; - OBD_FREE_PTR(copy); + kfree(copy); return rc; } case LL_IOC_HSM_COPY_END: { @@ -1884,7 +1884,7 @@ out_quotactl: if (!copy) return -ENOMEM; if (copy_from_user(copy, (char *)arg, sizeof(*copy))) { - OBD_FREE_PTR(copy); + kfree(copy); return -EFAULT; } @@ -1892,7 +1892,7 @@ out_quotactl: if (copy_to_user((char *)arg, copy, sizeof(*copy))) rc = -EFAULT; - OBD_FREE_PTR(copy); + kfree(copy); return rc; } default: diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c index 85e74d1..b53e4c7 100644 --- a/drivers/staging/lustre/lustre/llite/file.c +++ b/drivers/staging/lustre/lustre/llite/file.c @@ -213,7 +213,7 @@ out: md_clear_open_replay_data(md_exp, och); /* Free @och if it is not waiting for DONE_WRITING. */ och->och_fh.cookie = DEAD_HANDLE_MAGIC; - OBD_FREE_PTR(och); + kfree(och); } if (req) /* This is close request */ ptlrpc_req_finished(req); @@ -693,7 +693,7 @@ restart: out_och_free: if (rc) { if (och_p && *och_p) { - OBD_FREE(*och_p, sizeof(struct obd_client_handle)); + kfree(*och_p); *och_p = NULL; /* OBD_FREE writes some magic there */ (*och_usecount)--; } @@ -875,7 +875,7 @@ out_close: out_release_it: ll_intent_release(&it); out: - OBD_FREE_PTR(och); + kfree(och); return ERR_PTR(rc); } @@ -1779,7 +1779,7 @@ int ll_fid2path(struct inode *inode, void __user *arg) rc = -EFAULT; gf_free: - OBD_FREE(gfout, outsize); + kfree(gfout); return rc; } @@ -1883,7 +1883,7 @@ int ll_data_version(struct inode *inode, __u64 *data_version, *data_version = obdo->o_data_version; } - OBD_FREE_PTR(obdo); + kfree(obdo); out: ccc_inode_lsm_put(inode, lsm); return rc; @@ -2110,7 +2110,7 @@ putgl: free: if (llss != NULL) - OBD_FREE_PTR(llss); + kfree(llss); return rc; } @@ -2195,10 +2195,10 @@ static int ll_hsm_import(struct inode *inode, struct file *file, out: if (hss != NULL) - OBD_FREE_PTR(hss); + kfree(hss); if (attr != NULL) - OBD_FREE_PTR(attr); + kfree(attr); return rc; } @@ -2350,7 +2350,7 @@ ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0, LUSTRE_OPC_ANY, hus); if (IS_ERR(op_data)) { - OBD_FREE_PTR(hus); + kfree(hus); return PTR_ERR(op_data); } @@ -2361,7 +2361,7 @@ ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) rc = -EFAULT; ll_finish_md_op_data(op_data); - OBD_FREE_PTR(hus); + kfree(hus); return rc; } case LL_IOC_HSM_STATE_SET: { @@ -2373,13 +2373,13 @@ ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return -ENOMEM; if (copy_from_user(hss, (char *)arg, sizeof(*hss))) { - OBD_FREE_PTR(hss); + kfree(hss); return -EFAULT; } rc = ll_hsm_state_set(inode, hss); - OBD_FREE_PTR(hss); + kfree(hss); return rc; } case LL_IOC_HSM_ACTION: { @@ -2394,7 +2394,7 @@ ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0, LUSTRE_OPC_ANY, hca); if (IS_ERR(op_data)) { - OBD_FREE_PTR(hca); + kfree(hca); return PTR_ERR(op_data); } @@ -2405,7 +2405,7 @@ ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) rc = -EFAULT; ll_finish_md_op_data(op_data); - OBD_FREE_PTR(hca); + kfree(hca); return rc; } case LL_IOC_SET_LEASE: { @@ -2500,13 +2500,13 @@ ll_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return -ENOMEM; if (copy_from_user(hui, (void *)arg, sizeof(*hui))) { - OBD_FREE_PTR(hui); + kfree(hui); return -EFAULT; } rc = ll_hsm_import(inode, file, hui); - OBD_FREE_PTR(hui); + kfree(hui); return rc; } default: { @@ -3257,7 +3257,7 @@ void ll_iocontrol_unregister(void *magic) list_del(&tmp->iocd_list); up_write(&llioc.ioc_sem); - OBD_FREE(tmp, size); + kfree(tmp); return; } } @@ -3625,6 +3625,6 @@ int ll_layout_restore(struct inode *inode) hur->hur_request.hr_itemcount = 1; rc = obd_iocontrol(LL_IOC_HSM_REQUEST, cl_i2sbi(inode)->ll_md_exp, len, hur, NULL); - OBD_FREE(hur, len); + kfree(hur); return rc; } diff --git a/drivers/staging/lustre/lustre/llite/llite_close.c b/drivers/staging/lustre/lustre/llite/llite_close.c index a94ba02..7bdae72 100644 --- a/drivers/staging/lustre/lustre/llite/llite_close.c +++ b/drivers/staging/lustre/lustre/llite/llite_close.c @@ -305,7 +305,7 @@ out: ll_finish_md_op_data(op_data); if (och) { md_clear_open_replay_data(ll_i2sbi(inode)->ll_md_exp, och); - OBD_FREE_PTR(och); + kfree(och); } } @@ -374,7 +374,7 @@ int ll_close_thread_start(struct ll_close_queue **lcq_ret) task = kthread_run(ll_close_thread, lcq, "ll_close"); if (IS_ERR(task)) { - OBD_FREE(lcq, sizeof(*lcq)); + kfree(lcq); return PTR_ERR(task); } @@ -389,5 +389,5 @@ void ll_close_thread_shutdown(struct ll_close_queue *lcq) atomic_inc(&lcq->lcq_stop); wake_up(&lcq->lcq_waitq); wait_for_completion(&lcq->lcq_comp); - OBD_FREE(lcq, sizeof(*lcq)); + kfree(lcq); } diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c index bf1ec27..c2bed83 100644 --- a/drivers/staging/lustre/lustre/llite/llite_lib.c +++ b/drivers/staging/lustre/lustre/llite/llite_lib.c @@ -145,7 +145,7 @@ static void ll_free_sbi(struct super_block *sb) spin_lock(&ll_sb_lock); list_del(&sbi->ll_list); spin_unlock(&ll_sb_lock); - OBD_FREE(sbi, sizeof(*sbi)); + kfree(sbi); } } @@ -177,7 +177,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, osfs = kzalloc(sizeof(*osfs), GFP_NOFS); if (!osfs) { - OBD_FREE_PTR(data); + kfree(data); return -ENOMEM; } @@ -296,7 +296,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, valid ^ CLIENT_CONNECT_MDT_REQD, ","); LCONSOLE_ERROR_MSG(0x170, "Server %s does not support feature(s) needed for correct operation of this client (%s). Please upgrade server or downgrade client.\n", sbi->ll_md_exp->exp_obd->obd_name, buf); - OBD_FREE(buf, PAGE_CACHE_SIZE); + kfree(buf); err = -EPROTO; goto out_md_fid; } @@ -501,7 +501,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, err = md_getattr(sbi->ll_md_exp, op_data, &request); if (oc) capa_put(oc); - OBD_FREE_PTR(op_data); + kfree(op_data); if (err) { CERROR("%s: md_getattr failed for root: rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err); @@ -583,9 +583,9 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt, } if (data != NULL) - OBD_FREE_PTR(data); + kfree(data); if (osfs != NULL) - OBD_FREE_PTR(osfs); + kfree(osfs); return err; out_root: @@ -604,9 +604,9 @@ out_md: sbi->ll_md_exp = NULL; out: if (data != NULL) - OBD_FREE_PTR(data); + kfree(data); if (osfs != NULL) - OBD_FREE_PTR(osfs); + kfree(osfs); lprocfs_unregister_mountpoint(sbi); return err; } @@ -932,7 +932,7 @@ int ll_fill_super(struct super_block *sb, struct vfsmount *mnt) lsi->lsi_llsbi = sbi = ll_init_sbi(); if (!sbi) { module_put(THIS_MODULE); - OBD_FREE_PTR(cfg); + kfree(cfg); return -ENOMEM; } @@ -994,15 +994,15 @@ int ll_fill_super(struct super_block *sb, struct vfsmount *mnt) out_free: if (md) - OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2); + kfree(md); if (dt) - OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2); + kfree(dt); if (err) ll_put_super(sb); else if (sbi->ll_flags & LL_SBI_VERBOSE) LCONSOLE_WARN("Mounted %s\n", profilenm); - OBD_FREE_PTR(cfg); + kfree(cfg); return err; } /* ll_fill_super */ @@ -1126,8 +1126,7 @@ void ll_clear_inode(struct inode *inode) ll_md_real_close(inode, FMODE_READ); if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) { - OBD_FREE(lli->lli_symlink_name, - strlen(lli->lli_symlink_name) + 1); + kfree(lli->lli_symlink_name); lli->lli_symlink_name = NULL; } @@ -1957,7 +1956,7 @@ void ll_umount_begin(struct super_block *sb) obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, sizeof(*ioc_data), ioc_data, NULL); - OBD_FREE_PTR(ioc_data); + kfree(ioc_data); } /* Really, we'd like to wait until there are no requests outstanding, @@ -2236,7 +2235,7 @@ void ll_finish_md_op_data(struct md_op_data *op_data) { capa_put(op_data->op_capa1); capa_put(op_data->op_capa2); - OBD_FREE_PTR(op_data); + kfree(op_data); } int ll_show_options(struct seq_file *seq, struct dentry *dentry) diff --git a/drivers/staging/lustre/lustre/llite/llite_nfs.c b/drivers/staging/lustre/lustre/llite/llite_nfs.c index 243a784..a4c59ef 100644 --- a/drivers/staging/lustre/lustre/llite/llite_nfs.c +++ b/drivers/staging/lustre/lustre/llite/llite_nfs.c @@ -116,7 +116,7 @@ struct inode *search_inode_for_lustre(struct super_block *sb, /* mds_fid2dentry ignores f_type */ rc = md_getattr(sbi->ll_md_exp, op_data, &req); - OBD_FREE_PTR(op_data); + kfree(op_data); if (rc) { CERROR("can't get object attrs, fid "DFID", rc %d\n", PFID(fid), rc); diff --git a/drivers/staging/lustre/lustre/llite/llite_rmtacl.c b/drivers/staging/lustre/lustre/llite/llite_rmtacl.c index f4da156..c8a450b 100644 --- a/drivers/staging/lustre/lustre/llite/llite_rmtacl.c +++ b/drivers/staging/lustre/lustre/llite/llite_rmtacl.c @@ -94,7 +94,7 @@ static void rce_free(struct rmtacl_ctl_entry *rce) if (!list_empty(&rce->rce_list)) list_del(&rce->rce_list); - OBD_FREE_PTR(rce); + kfree(rce); } static struct rmtacl_ctl_entry *__rct_search(struct rmtacl_ctl_table *rct, @@ -205,7 +205,7 @@ void ee_free(struct eacl_entry *ee) if (ee->ee_acl) lustre_ext_acl_xattr_free(ee->ee_acl); - OBD_FREE_PTR(ee); + kfree(ee); } static struct eacl_entry *__et_search_del(struct eacl_table *et, pid_t key, diff --git a/drivers/staging/lustre/lustre/llite/lloop.c b/drivers/staging/lustre/lustre/llite/lloop.c index 413a840..cc00fd1 100644 --- a/drivers/staging/lustre/lustre/llite/lloop.c +++ b/drivers/staging/lustre/lustre/llite/lloop.c @@ -840,9 +840,9 @@ out_mem4: out_mem3: while (i--) put_disk(disks[i]); - OBD_FREE(disks, max_loop * sizeof(*disks)); + kfree(disks); out_mem2: - OBD_FREE(loop_dev, max_loop * sizeof(*loop_dev)); + kfree(loop_dev); out_mem1: unregister_blkdev(lloop_major, "lloop"); ll_iocontrol_unregister(ll_iocontrol_magic); @@ -863,8 +863,8 @@ static void lloop_exit(void) unregister_blkdev(lloop_major, "lloop"); - OBD_FREE(disks, max_loop * sizeof(*disks)); - OBD_FREE(loop_dev, max_loop * sizeof(*loop_dev)); + kfree(disks); + kfree(loop_dev); } module_init(lloop_init); diff --git a/drivers/staging/lustre/lustre/llite/namei.c b/drivers/staging/lustre/lustre/llite/namei.c index 49f1cb0..3724f8a 100644 --- a/drivers/staging/lustre/lustre/llite/namei.c +++ b/drivers/staging/lustre/lustre/llite/namei.c @@ -665,7 +665,7 @@ static int ll_atomic_open(struct inode *dir, struct dentry *dentry, out_release: ll_intent_release(it); - OBD_FREE(it, sizeof(*it)); + kfree(it); return rc; } diff --git a/drivers/staging/lustre/lustre/llite/statahead.c b/drivers/staging/lustre/lustre/llite/statahead.c index b75562c..2c10ab7 100644 --- a/drivers/staging/lustre/lustre/llite/statahead.c +++ b/drivers/staging/lustre/lustre/llite/statahead.c @@ -312,7 +312,7 @@ static void ll_sa_entry_cleanup(struct ll_statahead_info *sai, entry->se_minfo = NULL; ll_intent_release(&minfo->mi_it); iput(minfo->mi_dir); - OBD_FREE_PTR(minfo); + kfree(minfo); } if (req) { @@ -336,7 +336,7 @@ static void ll_sa_entry_put(struct ll_statahead_info *sai, ll_sa_entry_cleanup(sai, entry); iput(entry->se_inode); - OBD_FREE(entry, entry->se_size); + kfree(entry); atomic_dec(&sai->sai_cache_count); } } @@ -544,7 +544,7 @@ static void ll_sai_put(struct ll_statahead_info *sai) LASSERT(agl_list_empty(sai)); iput(inode); - OBD_FREE_PTR(sai); + kfree(sai); } } @@ -772,7 +772,7 @@ out: if (rc != 0) { ll_intent_release(it); iput(dir); - OBD_FREE_PTR(minfo); + kfree(minfo); } if (sai != NULL) ll_sai_put(sai); @@ -786,8 +786,8 @@ static void sa_args_fini(struct md_enqueue_info *minfo, iput(minfo->mi_dir); capa_put(minfo->mi_data.op_capa1); capa_put(minfo->mi_data.op_capa2); - OBD_FREE_PTR(minfo); - OBD_FREE_PTR(einfo); + kfree(minfo); + kfree(einfo); } /** @@ -816,15 +816,15 @@ static int sa_args_init(struct inode *dir, struct inode *child, minfo = kzalloc(sizeof(*minfo), GFP_NOFS); if (!minfo) { - OBD_FREE_PTR(einfo); + kfree(einfo); return -ENOMEM; } op_data = ll_prep_md_op_data(&minfo->mi_data, dir, child, qstr->name, qstr->len, 0, LUSTRE_OPC_ANY, NULL); if (IS_ERR(op_data)) { - OBD_FREE_PTR(einfo); - OBD_FREE_PTR(minfo); + kfree(einfo); + kfree(minfo); return PTR_ERR(op_data); } @@ -1720,7 +1720,7 @@ int do_statahead_enter(struct inode *dir, struct dentry **dentryp, out: if (sai != NULL) - OBD_FREE_PTR(sai); + kfree(sai); spin_lock(&lli->lli_sa_lock); lli->lli_opendir_key = NULL; lli->lli_opendir_pid = 0; diff --git a/drivers/staging/lustre/lustre/llite/xattr_cache.c b/drivers/staging/lustre/lustre/llite/xattr_cache.c index 69ea92a..6956dec 100644 --- a/drivers/staging/lustre/lustre/llite/xattr_cache.c +++ b/drivers/staging/lustre/lustre/llite/xattr_cache.c @@ -144,7 +144,7 @@ static int ll_xattr_cache_add(struct list_head *cache, return 0; err_value: - OBD_FREE(xattr->xe_name, xattr->xe_namelen); + kfree(xattr->xe_name); err_name: OBD_SLAB_FREE_PTR(xattr, xattr_kmem); @@ -170,8 +170,8 @@ static int ll_xattr_cache_del(struct list_head *cache, if (ll_xattr_cache_find(cache, xattr_name, &xattr) == 0) { list_del(&xattr->xe_list); - OBD_FREE(xattr->xe_name, xattr->xe_namelen); - OBD_FREE(xattr->xe_value, xattr->xe_vallen); + kfree(xattr->xe_name); + kfree(xattr->xe_value); OBD_SLAB_FREE_PTR(xattr, xattr_kmem); return 0;