[lustre-devel] [PATCH] Staging: lustre: Use kmemdup() instead of kzalloc and memcpy
Shreeya Patel
shreeya.patel23498 at gmail.com
Sun Jun 17 04:16:55 PDT 2018
Replace calls to kzalloc or kmalloc followed by a memcpy with
a direct call to kmemdup to shorten the code.
The Coccinelle semantic patch used to make this change is as follows:
@@
expression from,to,size,flag;
statement S;
@@
- to = \(kmalloc\|kzalloc\)(size,flag);
+ to = kmemdup(from,size,flag);
if (to==NULL || ...) S
- memcpy(to, from, size);
Signed-off-by: Shreeya Patel <shreeya.patel23498 at gmail.com>
---
drivers/staging/lustre/lnet/lnet/api-ni.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/lustre/lnet/lnet/api-ni.c b/drivers/staging/lustre/lnet/lnet/api-ni.c
index f9ed697..36ea14e 100644
--- a/drivers/staging/lustre/lnet/lnet/api-ni.c
+++ b/drivers/staging/lustre/lnet/lnet/api-ni.c
@@ -1271,15 +1271,14 @@ lnet_startup_lndni(struct lnet_ni *ni, struct lnet_ioctl_config_data *conf)
lnd_tunables = (struct lnet_ioctl_config_lnd_tunables *)conf->cfg_bulk;
if (lnd_tunables) {
- ni->ni_lnd_tunables = kzalloc(sizeof(*ni->ni_lnd_tunables),
+ ni->ni_lnd_tunables = kmemdup(lnd_tunables,
+ sizeof(*ni->ni_lnd_tunables),
GFP_NOFS);
if (!ni->ni_lnd_tunables) {
mutex_unlock(&the_lnet.ln_lnd_mutex);
rc = -ENOMEM;
goto failed0;
}
- memcpy(ni->ni_lnd_tunables, lnd_tunables,
- sizeof(*ni->ni_lnd_tunables));
}
/*
--
2.7.4
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