[Devel] [PATCH 10/25] elevate write count for link and symlink calls

[Dave Hansen]

Signed-off-by: Dave Hansen <haveblue at us.ibm.com>
---

 lxc-dave/fs/namei.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff -puN fs/namei.c~09-24-elevate-write-count-for-link-and-symlink-calls fs/namei.c
--- lxc/fs/namei.c~09-24-elevate-write-count-for-link-and-symlink-calls	2006-12-11 14:22:03.000000000 -0800
+++ lxc-dave/fs/namei.c	2006-12-11 14:22:03.000000000 -0800
@@ -2232,7 +2232,12 @@ asmlinkage long sys_symlinkat(const char
 	if (IS_ERR(dentry))
 		goto out_unlock;
 
+	error = mnt_want_write(nd.mnt);
+	if (error)
+		goto out_dput;
 	error = vfs_symlink(nd.dentry->d_inode, dentry, from, S_IALLUGO);
+	mnt_drop_write(nd.mnt);
+out_dput:
 	dput(dentry);
 out_unlock:
 	mutex_unlock(&nd.dentry->d_inode->i_mutex);
@@ -2327,7 +2332,12 @@ asmlinkage long sys_linkat(int olddfd, c
 	error = PTR_ERR(new_dentry);
 	if (IS_ERR(new_dentry))
 		goto out_unlock;
+	error = mnt_want_write(nd.mnt);
+	if (error)
+		goto out_dput;
 	error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry);
+	mnt_drop_write(nd.mnt);
+out_dput:
 	dput(new_dentry);
 out_unlock:
 	mutex_unlock(&nd.dentry->d_inode->i_mutex);
_
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