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SubjectRe: [GIT PULL] a few writeback fixes

* Jens Axboe <jens.axboe@oracle.com> wrote:

> Hi Linus,
>
> This fixes a problem with NFS killing its bdi without being
> initialized, and also contains a fix for a busy loop (where we forgot
> to set the task state before sleeping). Since these are a bit critical
> for -rc1, I'm pushing them out before leaving for Portland.
>
> Jan, since we're not really sure on the inode wait yet, I dropped that
> patch. It's definitely something to look into, as are the congestion
> bits.
>
> I plan on adding some writeback tracing code while on the plane for
> further analysis when I get back.
>
> git://git.kernel.dk/linux-2.6-block.git writeback
>
> Jens Axboe (4):
> nfs: nfs_kill_super() should call bdi_unregister() after killing super
> writeback: don't use schedule_timeout() without setting runstate
> writeback: make balance_dirty_pages() gradually back more off
> nfs: initialize the backing_dev_info when creating the server
>
> fs/nfs/client.c | 10 ++++++----
> fs/nfs/super.c | 2 +-
> mm/page-writeback.c | 11 ++++++++++-
> 3 files changed, 17 insertions(+), 6 deletions(-)

just an update about the BDI slab corruption bugs i reported in this
thread on lkml:

[origin tree SLAB corruption] BUG kmalloc-64: Poison overwritten,
INFO: Allocated in bdi_alloc_work+0x2b/0x100 age=175 cpu=1 pid=3514

They have gone away entirely with your earlier BDI fixes/updates, on all
-tip testsystems that triggered it. So that bug can be closed for good.

Thanks,

Ingo


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