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Message-Id: <1441949966-4484-4-git-send-email-shraddha.6596@gmail.com>
Date: Fri, 11 Sep 2015 11:09:26 +0530
From: Shraddha Barke <shraddha.6596@...il.com>
To: Oleg Drokin <oleg.drokin@...el.com>,
Andreas Dilger <andreas.dilger@...el.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Julia Lawall <Julia.Lawall@...6.fr>
Cc: HPDD-discuss@...ts.01.org, linux-kernel@...r.kernel.org,
Shraddha Barke <shraddha.6596@...il.com>
Subject: [PATCH v2 10/16] Staging: lustre: obdclass: genops.c: Remove explicit NULL comparison
Remove explicit NULL comparison and write it in its simpler form.
Replacement done with coccinelle:
@replace_rule@
expression e;
@@
-e == NULL
+ !e
Signed-off-by: Shraddha Barke <shraddha.6596@...il.com>
---
Changes in v2-
Considering cases with != NULL also
drivers/staging/lustre/lustre/obdclass/genops.c | 54 ++++++++++++-------------
1 file changed, 27 insertions(+), 27 deletions(-)
diff --git a/drivers/staging/lustre/lustre/obdclass/genops.c b/drivers/staging/lustre/lustre/obdclass/genops.c
index c12ebd5..6112df9 100644
--- a/drivers/staging/lustre/lustre/obdclass/genops.c
+++ b/drivers/staging/lustre/lustre/obdclass/genops.c
@@ -178,9 +178,9 @@ int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops,
type->typ_md_ops = kzalloc(sizeof(*type->typ_md_ops), GFP_NOFS);
type->typ_name = kzalloc(strlen(name) + 1, GFP_NOFS);
- if (type->typ_dt_ops == NULL ||
- type->typ_md_ops == NULL ||
- type->typ_name == NULL)
+ if (!type->typ_dt_ops ||
+ !type->typ_md_ops ||
+ !type->typ_name)
goto failed;
*(type->typ_dt_ops) = *dt_ops;
@@ -293,13 +293,13 @@ struct obd_device *class_newdev(const char *type_name, const char *name)
}
type = class_get_type(type_name);
- if (type == NULL) {
+ if (!type) {
CERROR("OBD: unknown type: %s\n", type_name);
return ERR_PTR(-ENODEV);
}
newdev = obd_device_alloc();
- if (newdev == NULL) {
+ if (!newdev) {
result = ERR_PTR(-ENOMEM);
goto out_type;
}
@@ -339,7 +339,7 @@ struct obd_device *class_newdev(const char *type_name, const char *name)
}
write_unlock(&obd_dev_lock);
- if (result == NULL && i >= class_devno_max()) {
+ if (!result && i >= class_devno_max()) {
CERROR("all %u OBD devices used, increase MAX_OBD_DEVICES\n",
class_devno_max());
result = ERR_PTR(-EOVERFLOW);
@@ -463,7 +463,7 @@ struct obd_device *class_num2obd(int num)
if (num < class_devno_max()) {
obd = obd_devs[num];
- if (obd == NULL)
+ if (!obd)
return NULL;
LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
@@ -509,7 +509,7 @@ void class_obd_list(void)
for (i = 0; i < class_devno_max(); i++) {
struct obd_device *obd = class_num2obd(i);
- if (obd == NULL)
+ if (!obd)
continue;
if (obd->obd_stopping)
status = "ST";
@@ -540,7 +540,7 @@ struct obd_device *class_find_client_obd(struct obd_uuid *tgt_uuid,
for (i = 0; i < class_devno_max(); i++) {
struct obd_device *obd = class_num2obd(i);
- if (obd == NULL)
+ if (!obd)
continue;
if ((strncmp(obd->obd_type->typ_name, typ_name,
strlen(typ_name)) == 0)) {
@@ -567,7 +567,7 @@ struct obd_device *class_devices_in_group(struct obd_uuid *grp_uuid, int *next)
{
int i;
- if (next == NULL)
+ if (!next)
i = 0;
else if (*next >= 0 && *next < class_devno_max())
i = *next;
@@ -578,10 +578,10 @@ struct obd_device *class_devices_in_group(struct obd_uuid *grp_uuid, int *next)
for (; i < class_devno_max(); i++) {
struct obd_device *obd = class_num2obd(i);
- if (obd == NULL)
+ if (!obd)
continue;
if (obd_uuid_equals(grp_uuid, &obd->obd_uuid)) {
- if (next != NULL)
+ if (next)
*next = i+1;
read_unlock(&obd_dev_lock);
return obd;
@@ -609,7 +609,7 @@ int class_notify_sptlrpc_conf(const char *fsname, int namelen)
for (i = 0; i < class_devno_max(); i++) {
obd = class_num2obd(i);
- if (obd == NULL || obd->obd_set_up == 0 || obd->obd_stopping)
+ if (!obd || obd->obd_set_up == 0 || obd->obd_stopping)
continue;
/* only notify mdc, osc, mdt, ost */
@@ -659,27 +659,27 @@ void obd_cleanup_caches(void)
int obd_init_caches(void)
{
- LASSERT(obd_device_cachep == NULL);
+ LASSERT(!obd_device_cachep);
obd_device_cachep = kmem_cache_create("ll_obd_dev_cache",
sizeof(struct obd_device),
0, 0, NULL);
if (!obd_device_cachep)
goto out;
- LASSERT(obdo_cachep == NULL);
+ LASSERT(!obdo_cachep);
obdo_cachep = kmem_cache_create("ll_obdo_cache", sizeof(struct obdo),
0, 0, NULL);
if (!obdo_cachep)
goto out;
- LASSERT(import_cachep == NULL);
+ LASSERT(!import_cachep);
import_cachep = kmem_cache_create("ll_import_cache",
sizeof(struct obd_import),
0, 0, NULL);
if (!import_cachep)
goto out;
- LASSERT(capa_cachep == NULL);
+ LASSERT(!capa_cachep);
capa_cachep = kmem_cache_create("capa_cache",
sizeof(struct obd_capa), 0, 0, NULL);
if (!capa_cachep)
@@ -740,7 +740,7 @@ struct obd_import *class_exp2cliimp(struct obd_export *exp)
{
struct obd_device *obd = exp->exp_obd;
- if (obd == NULL)
+ if (!obd)
return NULL;
return obd->u.cli.cl_import;
}
@@ -750,7 +750,7 @@ struct obd_import *class_conn2cliimp(struct lustre_handle *conn)
{
struct obd_device *obd = class_conn2obd(conn);
- if (obd == NULL)
+ if (!obd)
return NULL;
return obd->u.cli.cl_import;
}
@@ -875,7 +875,7 @@ struct obd_export *class_new_export(struct obd_device *obd,
}
hash = cfs_hash_getref(obd->obd_uuid_hash);
- if (hash == NULL) {
+ if (!hash) {
rc = -ENODEV;
goto exit_unlock;
}
@@ -959,7 +959,7 @@ static void class_import_destroy(struct obd_import *imp)
kfree(imp_conn);
}
- LASSERT(imp->imp_sec == NULL);
+ LASSERT(!imp->imp_sec);
class_decref(imp->imp_obd, "import", imp);
OBD_FREE_RCU(imp, sizeof(*imp), &imp->imp_handle);
}
@@ -1194,7 +1194,7 @@ int class_disconnect(struct obd_export *export)
{
int already_disconnected;
- if (export == NULL) {
+ if (!export) {
CWARN("attempting to free NULL export %p\n", export);
return -EINVAL;
}
@@ -1343,7 +1343,7 @@ void class_disconnect_stale_exports(struct obd_device *obd,
evicted++;
CDEBUG(D_HA, "%s: disconnect stale client %s@%s\n",
obd->obd_name, exp->exp_client_uuid.uuid,
- exp->exp_connection == NULL ? "<unknown>" :
+ !exp->exp_connection ? "<unknown>" :
libcfs_nid2str(exp->exp_connection->c_peer.nid));
print_export_data(exp, "EVICTING", 0);
}
@@ -1426,7 +1426,7 @@ int obd_export_evict_by_nid(struct obd_device *obd, const char *nid)
do {
doomed_exp = cfs_hash_lookup(nid_hash, &nid_key);
- if (doomed_exp == NULL)
+ if (!doomed_exp)
break;
LASSERTF(doomed_exp->exp_connection->c_peer.nid == nid_key,
@@ -1479,7 +1479,7 @@ int obd_export_evict_by_uuid(struct obd_device *obd, const char *uuid)
doomed_exp = cfs_hash_lookup(uuid_hash, &doomed_uuid);
- if (doomed_exp == NULL) {
+ if (!doomed_exp) {
CERROR("%s: can't disconnect %s: no exports found\n",
obd->obd_name, uuid);
} else {
@@ -1670,8 +1670,8 @@ static void obd_zombie_export_add(struct obd_export *exp)
*/
static void obd_zombie_import_add(struct obd_import *imp)
{
- LASSERT(imp->imp_sec == NULL);
- LASSERT(imp->imp_rq_pool == NULL);
+ LASSERT(!imp->imp_sec);
+ LASSERT(!imp->imp_rq_pool);
spin_lock(&obd_zombie_impexp_lock);
LASSERT(list_empty(&imp->imp_zombie_chain));
zombies_count++;
--
2.1.4
--
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