Re: [PATCH v2] xfs: preserve i_rdev when recycling a reclaimable inode

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On Mon, Mar 19, 2018 at 04:59:00PM +0200, Amir Goldstein wrote:
> On Mon, Mar 19, 2018 at 3:40 PM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> > On Wed, Mar 14, 2018 at 08:24:30AM +0200, Amir Goldstein wrote:
> >> On Tue, Mar 13, 2018 at 11:50 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote:
> >> > On Tue, Mar 13, 2018 at 04:33:15PM +0200, Amir Goldstein wrote:
> >> >> On Tue, Mar 13, 2018 at 3:11 PM, Christoph Hellwig <hch@xxxxxx> wrote:
> >> >> > On Tue, Mar 13, 2018 at 02:46:09PM +0200, Amir Goldstein wrote:
> >> >> >> OK, found the patches the fix soft lockups in generic/269 and
> >> >> >> assertion in generic/232, so expunging those 2 tests from v4.15.y
> >> >> >> test runs.
> >> >> >
> >> >> > Which patches are those?  We should probably backport them to 4.15-stable.
> >> >>
> >> >> Probably, but I guess Darrick has those in his TODO.
> >> >>
> >> >> There is this series that refers to failure in generic/232:
> >> >> https://marc.info/?l=linux-xfs&m=151701545720824&w=2
> >> >>
> >> >> These 2 commits refer to generic/269 specifically in commit message:
> >> >>  70c57dcd606f xfs: skip CoW writes past EOF when writeback races with truncate
> >> >>  be78ff0e7277 xfs: recheck reflink / dirty page status before freeing
> >> >> CoW reservations
> >> >> and the thread on the second commit also mentions generic/270
> >> >> (I found out the hard way that it also soft locks).
> >> >>
> >> >> But there are surely more patches for stable in master.
> >> >> I recon CC: stable and/or Fixes: tags could have been helpful,
> >> >> but I don't see any of those in v4.16-rcX from the core xfs developers.
> >> >
> >> > AS I always say: if you want to maintain a stable backport kernel
> >> > with all the fixes that go into the bleeding edge, you're more than
> >> > welcome to do it.
> >> >
> >> > Everyone else is flat out just keeping up with on going development
> >> > and fixing bugs in the kernel as it's moving forward. So if you have
> >> > the need for stable backports, please keep backporting patches you
> >> > need, testing them and asking the stable maintainers to include
> >> > them.
> >> >
> >>
> >> Greg,
> >>
> >> I tested the patch in question per Darrick's request.
> >> I found no regressions with full "auto" run on xfs with reflinks enabled.
> >> Please include this patch in stable 4.15.
> >
> > I have no idea anymore what "this patch" means here :(
> >
> > Please resend the git commit id of what I need to apply to where.
> >
> 
> Please apply commit
> acd1d71598f7 xfs: preserve i_rdev when recycling a reclaimable inode
> 
> to stable kernel v4.15

Now applied, thanks.

greg k-h



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