linux-kernel - [PATCH 1/2] fat: Fix d_splice

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Date:	Sun, 19 Oct 2014 12:39:43 +0200
From:	Richard Weinberger <richard@....at>
To:	linux-fsdevel@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Richard Weinberger <richard@....at>,
	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Subject: [PATCH 1/2] fat: Fix d_splice_alias() return code checking

d_splice_alias() can return a valid dentry, NULL or an ERR_PTR.
Currently the code checks not for ERR_PTR.
Fix this by using IS_ERR_OR_NULL().

Cc: OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Signed-off-by: Richard Weinberger <richard@....at>
---
 fs/fat/namei_vfat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index 6df8d3d..8f93464 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -757,7 +757,7 @@ out:
 	mutex_unlock(&MSDOS_SB(sb)->s_lock);
 	dentry->d_time = dentry->d_parent->d_inode->i_version;
 	dentry = d_splice_alias(inode, dentry);
-	if (dentry)
+	if (!IS_ERR_OR_NULL(dentry))
 		dentry->d_time = dentry->d_parent->d_inode->i_version;
 	return dentry;
 
-- 
2.1.0

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