lkml.org 
[lkml]   [2014]   [Sep]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH v11 00/21] Add support for NV-DIMMs to ext4
    On Tue, Sep 30, 2014 at 05:45:01AM -0400, Valdis.Kletnieks@vt.edu wrote:
    > On Thu, 25 Sep 2014 16:33:17 -0400, Matthew Wilcox said:
    >
    > > Patch 19 adds some DAX infrastructure to support ext4.
    > >
    > > Patch 20 adds DAX support to ext4. It is broadly similar to ext2's DAX
    > > support, but it is more efficient than ext4's due to its support for
    > > unwritten extents.
    >
    > I don't currently have a use case for NV-DIMM support.
    >
    > However, it would be nice if this code could be leveraged to support
    > 'force O_DIRECT on all I/O to this file' - that I *do* have a use
    > case for. Patch 20 looks to my untrained eye like it *almost* gets
    > there.
    >
    > (And if in fact it *does* do the whole enchilada, the Changelog etc should
    > mention it :)

    No, it doesn't try to do that. Wouldn't you be better served with an
    LD_PRELOAD that forces O_DIRECT on?



    \
     
     \ /
      Last update: 2014-09-30 17:01    [W:4.158 / U:2.024 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site