linux-kernel - [PATCH 3.10 32/51] pstore: d_alloc_name() doesnt return an ERR

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Date:	Tue,  3 Feb 2015 15:17:14 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
	Kees Cook <keescook@...omium.org>,
	Tony Luck <tony.luck@...el.com>, HuKeping <hukeping@...wei.com>
Subject: [PATCH 3.10 32/51] pstore: d_alloc_name() doesnt return an ERR_PTR

3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit c39524e6744284452ef45480d3153bec28960c32 upstream.

d_alloc_name() returns NULL on error.  Also I changed the error code
from -ENOSPC to -ENOMEM to reflect that we were short on RAM not disk
space.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Acked-by: Kees Cook <keescook@...omium.org>
Signed-off-by: Tony Luck <tony.luck@...el.com>
Cc: HuKeping <hukeping@...wei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/pstore/inode.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -336,9 +336,8 @@ int pstore_mkfile(enum pstore_type_id ty
 
 	mutex_lock(&root->d_inode->i_mutex);
 
-	rc = -ENOSPC;
 	dentry = d_alloc_name(root, name);
-	if (IS_ERR(dentry))
+	if (!dentry)
 		goto fail_lockedalloc;
 
 	memcpy(private->data, data, size);


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