linux-kernel - [PATCH] fs: fs2fs: Replaced calls to kmalloc and memcpy with kmemdup

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Date:	Sat,  9 Mar 2013 13:49:37 +0200
From:	Alexandru Gheorghiu <gheorghiuandru@...il.com>
To:	Mark Fasheh <mfasheh@...e.com>
Cc:	Joel Becker <jlbec@...lplan.org>, ocfs2-devel@....oracle.com,
	linux-kernel@...r.kernel.org,
	Alexandru Gheorghiu <gheorghiuandru@...il.com>
Subject: [PATCH] fs: fs2fs: Replaced calls to kmalloc and memcpy with kmemdup

Replaced calls to kmalloc followd by memcpy with a single call to kmemdup.
This patch was found using coccicheck.

Signed-off-by: Alexandru Gheorghiu <gheorghiuandru@...il.com>
---
 fs/ocfs2/localalloc.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index aebeacd..839183f 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -434,12 +434,11 @@ void ocfs2_shutdown_local_alloc(struct ocfs2_super *osb)
 	bh = osb->local_alloc_bh;
 	alloc = (struct ocfs2_dinode *) bh->b_data;
 
-	alloc_copy = kmalloc(bh->b_size, GFP_NOFS);
+	alloc_copy = kmemdup(alloc, bh->b_size, GFP_NOFS);
 	if (!alloc_copy) {
 		status = -ENOMEM;
 		goto out_commit;
 	}
-	memcpy(alloc_copy, alloc, bh->b_size);
 
 	status = ocfs2_journal_access_di(handle, INODE_CACHE(local_alloc_inode),
 					 bh, OCFS2_JOURNAL_ACCESS_WRITE);
@@ -1244,13 +1243,12 @@ static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
 	 * local alloc shutdown won't try to double free main bitmap
 	 * bits. Make a copy so the sync function knows which bits to
 	 * free. */
-	alloc_copy = kmalloc(osb->local_alloc_bh->b_size, GFP_NOFS);
+	alloc_copy = kmemdup(alloc, osb->local_alloc_bh->b_size, GFP_NOFS);
 	if (!alloc_copy) {
 		status = -ENOMEM;
 		mlog_errno(status);
 		goto bail;
 	}
-	memcpy(alloc_copy, alloc, osb->local_alloc_bh->b_size);
 
 	status = ocfs2_journal_access_di(handle,
 					 INODE_CACHE(local_alloc_inode),
-- 
1.7.9.5

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