Messages in this thread | | | Date | Thu, 28 Jun 2012 11:44:03 -0400 (EDT) | From | Mikulas Patocka <> | Subject | Re: Crash when IO is being submitted and block size is changed |
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On Thu, 28 Jun 2012, Jan Kara wrote:
> > Do you have any other ideas what to do with it? > Yeah, it's nasty and neither solution looks particularly appealing. One > idea that came to my mind is: I'm trying to solve some races between direct > IO, buffered IO, hole punching etc. by a new mapping interval lock. I'm not > sure if it will go anywhere yet but if it does, we can fix the above race > by taking the mapping lock for the whole block device around setting block > size thus effectivelly disallowing any IO to it. > > Honza > -- > Jan Kara <jack@suse.cz> > SUSE Labs, CR
What races are you trying to solve? There used to be i_alloc_mem that prevented direct i/o while the file is being truncated, but it disappeared in recent kernels...
Mikulas
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