[RFC][PATCH 14/27] sys_linkat(): elevate write count around vfs_link()

[Dave Hansen]

Signed-off-by: Dave Hansen <haveblue@xxxxxxxxxx>
---

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

diff -puN fs/namei.c~C-elevate-writers-vfs_link-part1 fs/namei.c
--- lxc/fs/namei.c~C-elevate-writers-vfs_link-part1	2006-07-12 11:09:29.000000000 -0700
+++ lxc-dave/fs/namei.c	2006-07-12 11:09:31.000000000 -0700
@@ -2313,7 +2313,12 @@ 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);
_
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/