Re: [PATCH 3.2 019/102] xfs: don't dirty buffers beyond EOF

2014-11-05 Thread Ben Hutchings
On Tue, 2014-11-04 at 18:09 +1100, Dave Chinner wrote:
> On Sat, Nov 01, 2014 at 10:28:03PM +, Ben Hutchings wrote:
> > 3.2.64-rc1 review patch.  If anyone has any objections, please let me know.
> 
> I'm not sure it's a good idea to pull stuff like this back into
> really old stable kernels.

OK, then I'll drop this.

> This was part of a much larger series of
> bug fixes that were fairly carefully tested. I very much doubt that
> there is specific XFS test coverage on these older kernels that
> would determine if this has introduced problems or not
[...]

No, I'm not testing XFS at all.

Ben.

-- 
Ben Hutchings
The program is absolutely right; therefore, the computer must be wrong.


signature.asc
Description: This is a digitally signed message part


Re: [PATCH 3.2 019/102] xfs: don't dirty buffers beyond EOF

2014-11-05 Thread Ben Hutchings
On Tue, 2014-11-04 at 18:09 +1100, Dave Chinner wrote:
 On Sat, Nov 01, 2014 at 10:28:03PM +, Ben Hutchings wrote:
  3.2.64-rc1 review patch.  If anyone has any objections, please let me know.
 
 I'm not sure it's a good idea to pull stuff like this back into
 really old stable kernels.

OK, then I'll drop this.

 This was part of a much larger series of
 bug fixes that were fairly carefully tested. I very much doubt that
 there is specific XFS test coverage on these older kernels that
 would determine if this has introduced problems or not
[...]

No, I'm not testing XFS at all.

Ben.

-- 
Ben Hutchings
The program is absolutely right; therefore, the computer must be wrong.


signature.asc
Description: This is a digitally signed message part


Re: [PATCH 3.2 019/102] xfs: don't dirty buffers beyond EOF

2014-11-03 Thread Dave Chinner
On Sat, Nov 01, 2014 at 10:28:03PM +, Ben Hutchings wrote:
> 3.2.64-rc1 review patch.  If anyone has any objections, please let me know.

I'm not sure it's a good idea to pull stuff like this back into
really old stable kernels. This was part of a much larger series of
bug fixes that were fairly carefully tested. I very much doubt that
there is specific XFS test coverage on these older kernels that
would determine if this has introduced problems or not
> 
> --
> 
> From: Dave Chinner 
> 
> commit 22e757a49cf010703fcb9c9b4ef793248c39b0c2 upstream.
> 
> generic/263 is failing fsx at this point with a page spanning
> EOF that cannot be invalidated. The operations are:
> 
> 1190 mapwrite   0x52c00 thru0x5e569 (0xb96a bytes)
> 1191 mapread0x5c000 thru0x5d636 (0x1637 bytes)
> 1192 write  0x5b600 thru0x771ff (0x1bc00 bytes)

I've got no idea whether generic/263 even exposes this problem
on 3.2 kernels, or whether there's a bunch of the other upstream
changes that need to be added first to expose it... :/

Cheers,

Dave.
-- 
Dave Chinner
da...@fromorbit.com
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/


Re: [PATCH 3.2 019/102] xfs: don't dirty buffers beyond EOF

2014-11-03 Thread Dave Chinner
On Sat, Nov 01, 2014 at 10:28:03PM +, Ben Hutchings wrote:
 3.2.64-rc1 review patch.  If anyone has any objections, please let me know.

I'm not sure it's a good idea to pull stuff like this back into
really old stable kernels. This was part of a much larger series of
bug fixes that were fairly carefully tested. I very much doubt that
there is specific XFS test coverage on these older kernels that
would determine if this has introduced problems or not
 
 --
 
 From: Dave Chinner dchin...@redhat.com
 
 commit 22e757a49cf010703fcb9c9b4ef793248c39b0c2 upstream.
 
 generic/263 is failing fsx at this point with a page spanning
 EOF that cannot be invalidated. The operations are:
 
 1190 mapwrite   0x52c00 thru0x5e569 (0xb96a bytes)
 1191 mapread0x5c000 thru0x5d636 (0x1637 bytes)
 1192 write  0x5b600 thru0x771ff (0x1bc00 bytes)

I've got no idea whether generic/263 even exposes this problem
on 3.2 kernels, or whether there's a bunch of the other upstream
changes that need to be added first to expose it... :/

Cheers,

Dave.
-- 
Dave Chinner
da...@fromorbit.com
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/