lkml.org 
[lkml]   [2001]   [Sep]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] lazy umount (1/4)

On Fri, 14 Sep 2001, Alexander Viro wrote:
>
> There are only two things to take care of -
> a) if we detach a parent we should do it for all children
> b) we should not mount anything on "floating" vfsmounts.
> Both are obviously staisfied for current code (presence of children
> means that vfsmount is busy and we can't mount on something that
> doesn't exist).

I disagree about the "we can't mount on something that doesn't exist"
part.

If the detached mount is busy, it might be busy exactly because somebody
has his working directory in it. Which means that

mount /dev/hda ./xxxx

by such a process could cause a mount within the "nonexisting" mount.

Linus

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:03    [W:0.077 / U:0.700 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site