Acked-by: Al Viro <[EMAIL PROTECTED]>
Signed-off-by: Christoph Hellwig <[EMAIL PROTECTED]>
Signed-off-by: Dave Hansen <[EMAIL PROTECTED]>
---

 linux-2.6.git-dave/fs/namei.c   |    4 ++++
 linux-2.6.git-dave/ipc/mqueue.c |    5 ++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff -puN fs/namei.c~r-o-bind-mounts-elevate-mnt-writers-for-vfs_unlink-callers 
fs/namei.c
--- 
linux-2.6.git/fs/namei.c~r-o-bind-mounts-elevate-mnt-writers-for-vfs_unlink-callers
 2008-02-15 13:25:48.000000000 -0800
+++ linux-2.6.git-dave/fs/namei.c       2008-02-15 13:25:48.000000000 -0800
@@ -2280,7 +2280,11 @@ static long do_unlinkat(int dfd, const c
                inode = dentry->d_inode;
                if (inode)
                        atomic_inc(&inode->i_count);
+               error = mnt_want_write(nd.path.mnt);
+               if (error)
+                       goto exit2;
                error = vfs_unlink(nd.path.dentry->d_inode, dentry);
+               mnt_drop_write(nd.path.mnt);
        exit2:
                dput(dentry);
        }
diff -puN 
ipc/mqueue.c~r-o-bind-mounts-elevate-mnt-writers-for-vfs_unlink-callers 
ipc/mqueue.c
--- 
linux-2.6.git/ipc/mqueue.c~r-o-bind-mounts-elevate-mnt-writers-for-vfs_unlink-callers
       2008-02-15 13:25:48.000000000 -0800
+++ linux-2.6.git-dave/ipc/mqueue.c     2008-02-15 13:25:48.000000000 -0800
@@ -742,8 +742,11 @@ asmlinkage long sys_mq_unlink(const char
        inode = dentry->d_inode;
        if (inode)
                atomic_inc(&inode->i_count);
-
+       err = mnt_want_write(mqueue_mnt);
+       if (err)
+               goto out_err;
        err = vfs_unlink(dentry->d_parent->d_inode, dentry);
+       mnt_drop_write(mqueue_mnt);
 out_err:
        dput(dentry);
 
_
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