linux-kernel - [PATCH] ecryptfs: Use kmemdup rather than duplicating its implementation

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Date:	Sat, 12 Nov 2011 10:27:52 +0100
From:	Thomas Meyer <thomas@...3r.de>
To:	ecryptfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ecryptfs: Use kmemdup rather than duplicating its
 implementation

Use kmemdup rather than duplicating its implementation

The semantic patch that makes this change is available
in scripts/coccinelle/api/memdup.cocci.

Signed-off-by: Thomas Meyer <thomas@...3r.de>
---

diff -u -p a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c
--- a/fs/ecryptfs/messaging.c 2011-11-07 19:38:22.340474214 +0100
+++ b/fs/ecryptfs/messaging.c 2011-11-08 10:34:54.896614796 +0100
@@ -350,14 +350,13 @@ int ecryptfs_process_response(struct ecr
 		goto unlock;
 	}
 	msg_size = (sizeof(*msg) + msg->data_len);
-	msg_ctx->msg = kmalloc(msg_size, GFP_KERNEL);
+	msg_ctx->msg = kmemdup(msg, msg_size, GFP_KERNEL);
 	if (!msg_ctx->msg) {
 		rc = -ENOMEM;
 		printk(KERN_ERR "%s: Failed to allocate [%zd] bytes of "
 		       "GFP_KERNEL memory\n", __func__, msg_size);
 		goto unlock;
 	}
-	memcpy(msg_ctx->msg, msg, msg_size);
 	msg_ctx->state = ECRYPTFS_MSG_CTX_STATE_DONE;
 	rc = 0;
 wake_up:


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