lkml.org 
[lkml]   [2012]   [Jan]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 2/2] cgroup: add xattr support
    On Sat, 21 Jan 2012, Lennart Poettering wrote:
    > On Wed, 18.01.12 18:40, Tejun Heo (tj@kernel.org) wrote:
    > > On Wed, Jan 18, 2012 at 06:20:05PM -0800, Tejun Heo wrote:
    > >
    > > Also note that tmpfs also implies size limit. We definitely need some
    > > form of control over the amount of memory xattr may consume.
    >
    > Good point. But then again we don't even have anything resembling for
    > tmpfs either, where it would be much more important... :-(

    But although the tmpfs framework for xattrs is general, the validation
    function only permits XATTR_SECURITY_PREFIX and XATTR_TRUSTED_PREFIX.

    Yes, it would be very necessary to impose size limits if tmpfs went
    beyond those to permit XATTR_USER_PREFIX - which the cgroupfs patch
    under discussion does permit.

    >
    > Given that cgroupfs is probably mostly read-only for normal users, the
    > requirement for quotas on it is probably much less important than for tmpfs
    > though.

    Hugh


    \
     
     \ /
      Last update: 2012-01-21 05:03    [W:0.021 / U:0.048 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site