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Date: Sat, 14 Jun 2014 17:29:51 +1000
From: Vitaly Osipov <vitaly.osipov@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Peng Tao <bergwolf@...il.com>, Joe Perches <joe@...ches.com>,
devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH] staging: lustre: remove memset(0) after LIBCFS_ALLOC
Joe Perches mentioned on driverdev-devel that memset after LIBCFS_ALLOC
is not necessary as it is already done during LIBCFS_ALLOC_POST. This
commit removes these unnecessary memsets. Based on the results of running
a cocci patch along the lines of:
@@
expression E1, E2;
@@
LIBCFS_ALLOC (E1,E2);
...
- memset(E1,0,E2);
Signed-off-by: Vitaly Osipov <vitaly.osipov@...il.com>
---
drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c | 5 -----
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c | 4 ----
drivers/staging/lustre/lnet/lnet/router.c | 1 -
drivers/staging/lustre/lnet/selftest/console.c | 10 ----------
drivers/staging/lustre/lnet/selftest/framework.c | 2 --
drivers/staging/lustre/lustre/libcfs/linux/linux-tcpip.c | 2 --
6 files changed, 24 deletions(-)
diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
index 892c419..1a4c9e6 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
@@ -2430,8 +2430,6 @@ kiblnd_hdev_setup_mrs(kib_hca_dev_t *hdev)
return -ENOMEM;
}
- memset(hdev->ibh_mrs, 0, sizeof(*hdev->ibh_mrs) * hdev->ibh_nmrs);
-
for (i = 0; i < hdev->ibh_nmrs; i++) {
struct ib_phys_buf ipb;
__u64 iova;
@@ -2704,7 +2702,6 @@ kiblnd_create_dev(char *ifname)
if (dev == NULL)
return NULL;
- memset(dev, 0, sizeof(*dev));
netdev = dev_get_by_name(&init_net, ifname);
if (netdev == NULL) {
dev->ibd_can_failover = 0;
@@ -3088,8 +3085,6 @@ kiblnd_startup (lnet_ni_t *ni)
if (net == NULL)
goto failed;
- memset(net, 0, sizeof(*net));
-
do_gettimeofday(&tv);
net->ibn_incarnation = (((__u64)tv.tv_sec) * 1000000) + tv.tv_usec;
diff --git a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
index 775dcd2..f528b65 100644
--- a/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
+++ b/drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
@@ -113,8 +113,6 @@ ksocknal_create_peer (ksock_peer_t **peerp, lnet_ni_t *ni, lnet_process_id_t id)
if (peer == NULL)
return -ENOMEM;
- memset (peer, 0, sizeof (*peer)); /* NULL pointers/clear flags etc */
-
peer->ksnp_ni = ni;
peer->ksnp_id = id;
atomic_set (&peer->ksnp_refcount, 1); /* 1 ref for caller */
@@ -1040,8 +1038,6 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
goto failed_0;
}
- memset (conn, 0, sizeof (*conn));
-
conn->ksnc_peer = NULL;
conn->ksnc_route = NULL;
conn->ksnc_sock = sock;
diff --git a/drivers/staging/lustre/lnet/lnet/router.c b/drivers/staging/lustre/lnet/lnet/router.c
index 926923a..1359b11 100644
--- a/drivers/staging/lustre/lnet/lnet/router.c
+++ b/drivers/staging/lustre/lnet/lnet/router.c
@@ -866,7 +866,6 @@ lnet_create_rc_data_locked(lnet_peer_t *gateway)
if (pi == NULL)
goto out;
- memset(pi, 0, LNET_PINGINFO_SIZE);
for (i = 0; i < LNET_MAX_RTR_NIS; i++) {
pi->pi_ni[i].ns_nid = LNET_NID_ANY;
pi->pi_ni[i].ns_status = LNET_NI_STATUS_INVALID;
diff --git a/drivers/staging/lustre/lnet/selftest/console.c b/drivers/staging/lustre/lnet/selftest/console.c
index 352fc96..2aeebbf 100644
--- a/drivers/staging/lustre/lnet/selftest/console.c
+++ b/drivers/staging/lustre/lnet/selftest/console.c
@@ -204,9 +204,6 @@ lstcon_group_alloc(char *name, lstcon_group_t **grpp)
if (grp == NULL)
return -ENOMEM;
- memset(grp, 0, offsetof(lstcon_group_t,
- grp_ndl_hash[LST_NODE_HASHSIZE]));
-
grp->grp_ref = 1;
if (name != NULL)
strcpy(grp->grp_name, name);
@@ -815,8 +812,6 @@ lstcon_group_info(char *name, lstcon_ndlist_ent_t *gents_p,
return -ENOMEM;
}
- memset(gentp, 0, sizeof(lstcon_ndlist_ent_t));
-
list_for_each_entry(ndl, &grp->grp_ndl_list, ndl_link)
LST_NODE_STATE_COUNTER(ndl->ndl_node, gentp);
@@ -971,8 +966,6 @@ lstcon_batch_info(char *name, lstcon_test_batch_ent_t *ent_up, int server,
if (entp == NULL)
return -ENOMEM;
- memset(entp, 0, sizeof(lstcon_test_batch_ent_t));
-
if (test == NULL) {
entp->u.tbe_batch.bae_ntest = bat->bat_ntest;
entp->u.tbe_batch.bae_state = bat->bat_state;
@@ -1319,7 +1312,6 @@ lstcon_test_add(char *batch_name, int type, int loop,
goto out;
}
- memset(test, 0, offsetof(lstcon_test_t, tes_param[paramlen]));
test->tes_hdr.tsb_id = batch->bat_hdr.tsb_id;
test->tes_batch = batch;
test->tes_type = type;
@@ -1789,8 +1781,6 @@ lstcon_session_info(lst_sid_t *sid_up, int *key_up, unsigned *featp,
if (entp == NULL)
return -ENOMEM;
- memset(entp, 0, sizeof(*entp));
-
list_for_each_entry(ndl, &console_session.ses_ndl_list, ndl_link)
LST_NODE_STATE_COUNTER(ndl->ndl_node, entp);
diff --git a/drivers/staging/lustre/lnet/selftest/framework.c b/drivers/staging/lustre/lnet/selftest/framework.c
index 050723a..b2b63e9 100644
--- a/drivers/staging/lustre/lnet/selftest/framework.c
+++ b/drivers/staging/lustre/lnet/selftest/framework.c
@@ -149,7 +149,6 @@ sfw_register_test (srpc_service_t *service, sfw_test_client_ops_t *cliops)
if (tsc == NULL)
return -ENOMEM;
- memset(tsc, 0, sizeof(sfw_test_case_t));
tsc->tsc_cli_ops = cliops;
tsc->tsc_srv_service = service;
@@ -747,7 +746,6 @@ sfw_add_test_instance (sfw_batch_t *tsb, srpc_server_rpc_t *rpc)
return -ENOMEM;
}
- memset(tsi, 0, sizeof(*tsi));
spin_lock_init(&tsi->tsi_lock);
atomic_set(&tsi->tsi_nactive, 0);
INIT_LIST_HEAD(&tsi->tsi_units);
diff --git a/drivers/staging/lustre/lustre/libcfs/linux/linux-tcpip.c b/drivers/staging/lustre/lustre/libcfs/linux/linux-tcpip.c
index ac3a444..a21b426 100644
--- a/drivers/staging/lustre/lustre/libcfs/linux/linux-tcpip.c
+++ b/drivers/staging/lustre/lustre/libcfs/linux/linux-tcpip.c
@@ -183,8 +183,6 @@ libcfs_ipif_enumerate (char ***namesp)
rc = -ENOMEM;
goto out1;
}
- /* NULL out all names[i] */
- memset (names, 0, nfound * sizeof(*names));
for (i = 0; i < nfound; i++) {
--
1.9.1
--
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