[PATCH 22/45] staging/lustre/mgc: Adjust NULL comparison codestyle

green
2016-02-16T05:56:10Z

All instances of "x == NULL" are changed to "!x" and
"x != NULL" to "x"

Also remove some redundant assertions.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
---
drivers/staging/lustre/lustre/mgc/mgc_request.c | 41 ++++++++++++-------------
1 file changed, 20 insertions(+), 21 deletions(-)

diff --git a/drivers/staging/lustre/lustre/mgc/mgc_request.c b/drivers/staging/lustre/lustre/mgc/mgc_request.c
index ab4800c..bd34ab3 100644
--- a/drivers/staging/lustre/lustre/mgc/mgc_request.c
+++ b/drivers/staging/lustre/lustre/mgc/mgc_request.c
@@ -162,7 +162,7 @@ struct config_llog_data *config_log_find(char *logname,
struct config_llog_data *found = NULL;
void *instance;

- LASSERT(logname != NULL);
+ LASSERT(logname);

instance = cfg ? cfg->cfg_instance : NULL;
spin_lock(&config_list_lock);
@@ -300,7 +300,7 @@ static int config_log_add(struct obd_device *obd, char *logname,
* <fsname>-sptlrpc. multiple regular logs may share one sptlrpc log.
*/
ptr = strrchr(logname, '-');
- if (ptr == NULL || ptr - logname > 8) {
+ if (!ptr || ptr - logname > 8) {
CERROR("logname %s is too long\n", logname);
return -EINVAL;
}
@@ -309,7 +309,7 @@ static int config_log_add(struct obd_device *obd, char *logname,
strcpy(seclogname + (ptr - logname), "-sptlrpc");

sptlrpc_cld = config_log_find(seclogname, NULL);
- if (sptlrpc_cld == NULL) {
+ if (!sptlrpc_cld) {
sptlrpc_cld = do_config_log_add(obd, seclogname,
CONFIG_T_SPTLRPC, NULL, NULL);
if (IS_ERR(sptlrpc_cld)) {
@@ -376,7 +376,7 @@ static int config_log_end(char *logname, struct config_llog_instance *cfg)
int rc = 0;

cld = config_log_find(logname, cfg);
- if (cld == NULL)
+ if (!cld)
return -ENOENT;

mutex_lock(&cld->cld_lock);
@@ -455,7 +455,7 @@ int lprocfs_mgc_rd_ir_state(struct seq_file *m, void *data)

spin_lock(&config_list_lock);
list_for_each_entry(cld, &config_llog_list, cld_list_chain) {
- if (cld->cld_recover == NULL)
+ if (!cld->cld_recover)
continue;
seq_printf(m, " - { client: %s, nidtbl_version: %u }\n",
cld->cld_logname,
@@ -883,7 +883,7 @@ static int mgc_enqueue(struct obd_export *exp, struct lov_stripe_md *lsm,
req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
&RQF_LDLM_ENQUEUE, LUSTRE_DLM_VERSION,
LDLM_ENQUEUE);
- if (req == NULL)
+ if (!req)
return -ENOMEM;

req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER, 0);
@@ -921,7 +921,7 @@ static int mgc_target_register(struct obd_export *exp,
req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
&RQF_MGS_TARGET_REG, LUSTRE_MGS_VERSION,
MGS_TARGET_REG);
- if (req == NULL)
+ if (!req)
return -ENOMEM;

req_mti = req_capsule_client_get(&req->rq_pill, &RMF_MGS_TARGET_INFO);
@@ -1109,7 +1109,7 @@ static int mgc_apply_recover_logs(struct obd_device *mgc,
int rc = 0;
int off = 0;

- LASSERT(cfg->cfg_instance != NULL);
+ LASSERT(cfg->cfg_instance);
LASSERT(cfg->cfg_sb == cfg->cfg_instance);

inst = kzalloc(PAGE_CACHE_SIZE, GFP_KERNEL);
@@ -1195,7 +1195,7 @@ static int mgc_apply_recover_logs(struct obd_device *mgc,
/* lustre-OST0001-osc-<instance #> */
strcpy(obdname, cld->cld_logname);
cname = strrchr(obdname, '-');
- if (cname == NULL) {
+ if (!cname) {
CERROR("mgc %s: invalid logname %s\n",
mgc->obd_name, obdname);
break;
@@ -1212,7 +1212,7 @@ static int mgc_apply_recover_logs(struct obd_device *mgc,

/* find the obd by obdname */
obd = class_name2obd(obdname);
- if (obd == NULL) {
+ if (!obd) {
CDEBUG(D_INFO, "mgc %s: cannot find obdname %s\n",
mgc->obd_name, obdname);
rc = 0;
@@ -1227,7 +1227,7 @@ static int mgc_apply_recover_logs(struct obd_device *mgc,
uuid = buf + pos;

down_read(&obd->u.cli.cl_sem);
- if (obd->u.cli.cl_import == NULL) {
+ if (!obd->u.cli.cl_import) {
/* client does not connect to the OST yet */
up_read(&obd->u.cli.cl_sem);
rc = 0;
@@ -1257,7 +1257,7 @@ static int mgc_apply_recover_logs(struct obd_device *mgc,

rc = -ENOMEM;
lcfg = lustre_cfg_new(LCFG_PARAM, &bufs);
- if (lcfg == NULL) {
+ if (!lcfg) {
CERROR("mgc: cannot allocate memory\n");
break;
}
@@ -1309,14 +1309,14 @@ static int mgc_process_recover_log(struct obd_device *obd,
nrpages = CONFIG_READ_NRPAGES_INIT;

pages = kcalloc(nrpages, sizeof(*pages), GFP_KERNEL);
- if (pages == NULL) {
+ if (!pages) {
rc = -ENOMEM;
goto out;
}

for (i = 0; i < nrpages; i++) {
pages[i] = alloc_page(GFP_KERNEL);
- if (pages[i] == NULL) {
+ if (!pages[i]) {
rc = -ENOMEM;
goto out;
}
@@ -1327,7 +1327,7 @@ again:
LASSERT(mutex_is_locked(&cld->cld_lock));
req = ptlrpc_request_alloc(class_exp2cliimp(cld->cld_mgcexp),
&RQF_MGS_CONFIG_READ);
- if (req == NULL) {
+ if (!req) {
rc = -ENOMEM;
goto out;
}
@@ -1338,7 +1338,6 @@ again:

/* pack request */
body = req_capsule_client_get(&req->rq_pill, &RMF_MGS_CONFIG_BODY);
- LASSERT(body != NULL);
LASSERT(sizeof(body->mcb_name) > strlen(cld->cld_logname));
if (strlcpy(body->mcb_name, cld->cld_logname, sizeof(body->mcb_name))
>= sizeof(body->mcb_name)) {
@@ -1353,7 +1352,7 @@ again:
/* allocate bulk transfer descriptor */
desc = ptlrpc_prep_bulk_imp(req, nrpages, 1, BULK_PUT_SINK,
MGS_BULK_PORTAL);
- if (desc == NULL) {
+ if (!desc) {
rc = -ENOMEM;
goto out;
}
@@ -1434,7 +1433,7 @@ out:

if (pages) {
for (i = 0; i < nrpages; i++) {
- if (pages[i] == NULL)
+ if (!pages[i])
break;
__free_page(pages[i]);
}
@@ -1635,7 +1634,7 @@ static int mgc_process_config(struct obd_device *obd, u32 len, void *buf)
if (rc)
break;
cld = config_log_find(logname, cfg);
- if (cld == NULL) {
+ if (!cld) {
rc = -ENOENT;
break;
}
@@ -1646,7 +1645,7 @@ static int mgc_process_config(struct obd_device *obd, u32 len, void *buf)
cld->cld_cfg.cfg_flags |= CFG_F_COMPAT146;

rc = mgc_process_log(obd, cld);
- if (rc == 0 && cld->cld_recover != NULL) {
+ if (rc == 0 && cld->cld_recover) {
if (OCD_HAS_FLAG(&obd->u.cli.cl_import->
imp_connect_data, IMP_RECOV)) {
rc = mgc_process_log(obd, cld->cld_recover);
@@ -1660,7 +1659,7 @@ static int mgc_process_config(struct obd_device *obd, u32 len, void *buf)
CERROR("Cannot process recover llog %d\n", rc);
}

- if (rc == 0 && cld->cld_params != NULL) {
+ if (rc == 0 && cld->cld_params) {
rc = mgc_process_log(obd, cld->cld_params);
if (rc == -ENOENT) {
CDEBUG(D_MGC,
--
2.1.0