Re: [PATCHSET v3.1 0/7] data integrity: Stabilize pages duringwriteback for various fses

[Jan Kara]

On Wed 11-05-11 01:29:28, OGAWA Hirofumi wrote:
> Jan Kara <jack@xxxxxxx> writes:
> 
> > On Wed 11-05-11 00:24:58, OGAWA Hirofumi wrote:
> >> Jan Kara <jack@xxxxxxx> writes:
> >> 
> >> >> Isn't it reallocated blocks too, and metadata too?
> >> >   Reallocated blocks - not really. For a block to be freed it cannot be
> >> > under writeback and when it's freed no writeback is started.
> >> 
> >> Sure for data -> data reallocated case. metadata -> data/metadata is
> >> still there.
> >   Unless you properly use bforget() (which you should I think). But I have
> > not really checked this in detail for a while.
> 
> bforget() doesn't wait IO, right?
  Right, my fault. Sorry. So you were right, reallocated blocks will be hit
as well.

								Honza
-- 
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR
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