Re: [Lsf] [RFC] writeback and cgroup

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

On Wed, 2012-04-04 at 14:23 -0500, Steve French wrote:
> Current use of bdi is a little hard to understand since
> there are 25+ fields in the structure.  

Filesystems only need a small fraction of those.

In particular,

  backing_dev_info::name	-- string
  backing_dev_info::ra_pages	-- number of read-ahead-pages
  backing_dev_info::capability	-- see BDI_CAP_*
One should properly initialize/destroy the thing using:


Furthermore, it has hooks into the regular page-writeback stuff:

but also allows filesystems to do custom stuff, see FUSE for example.

The only other bit is the pressure valve, aka.
{set,clear}_bdi_congested(). Which really is rather broken and of
dubious value.

Containers mailing list

[Cgroups]     [Netdev]     [Linux Wireless]     [Kernel Newbies]     [Memory]     [Security]     [Linux for Hams]     [Netfilter]     [Bugtraq]     [Photo]     [Yosemite]     [Yosemite Forum]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux Admin]     [Find Someone Nice]     [Samba]     [Video 4 Linux]     [Computer Add-ons]

Powered by Linux