lkml.org 
[lkml]   [2011]   [Jul]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: Union mount and lockdep design issues
Date
Miklos Szeredi <miklos@szeredi.hu> wrote:

> Overlayfs never locks both upper and lower at the same time, which means
> there's no AB-BA locking dependency. The lock orderings are:

What you're talking about is not analogous to the situation I'm seeing with
unionmount.

You actually have three filesystems in overlayfs. The interaction between
overlayfs-and-upperfs and overlayfs-and-lowerfs is the equivalent in
unionmount terms to upperfs-and-lowerfs. This is where the lockdep issue
lies.

David


\
 
 \ /
  Last update: 2011-07-13 14:05    [W:0.217 / U:0.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site