linux-kernel - [PATCH 23/25] do_rmdir(): elevate write count

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Date:	Thu, 20 Sep 2007 12:53:19 -0700
From:	Dave Hansen <haveblue@...ibm.com>
To:	akpm@...l.org
Cc:	linux-kernel@...r.kernel.org, hch@...radead.org,
	Dave Hansen <haveblue@...ibm.com>
Subject: [PATCH 23/25] do_rmdir(): elevate write count


Elevate the write count during the vfs_rmdir() call.

Signed-off-by: Dave Hansen <haveblue@...ibm.com>
Acked-by: Christoph Hellwig <hch@...radead.org>
---

 lxc-dave/fs/namei.c |    5 +++++
 1 file changed, 5 insertions(+)

diff -puN fs/namei.c~do-rmdir-elevate-write-count fs/namei.c
--- lxc/fs/namei.c~do-rmdir-elevate-write-count	2007-09-20 12:16:22.000000000 -0700
+++ lxc-dave/fs/namei.c	2007-09-20 12:16:22.000000000 -0700
@@ -2148,7 +2148,12 @@ static long do_rmdir(int dfd, const char
 	error = PTR_ERR(dentry);
 	if (IS_ERR(dentry))
 		goto exit2;
+	error = mnt_want_write(nd.mnt);
+	if (error)
+		goto exit3;
 	error = vfs_rmdir(nd.dentry->d_inode, dentry);
+	mnt_drop_write(nd.mnt);
+exit3:
 	dput(dentry);
 exit2:
 	mutex_unlock(&nd.dentry->d_inode->i_mutex);
_
-
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