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SubjectRe: linux-next: manual merge of the block tree with the fscrypt tree
On Tue, Jan 15, 2019 at 07:55:39PM -0700, Jens Axboe wrote:
> On 1/15/19 7:25 PM, Stephen Rothwell wrote:
> > Hi all,
> >
> > Today's linux-next merge of the block tree got a conflict in:
> >
> > fs/ext4/readpage.c
> >
> > between commit:
> >
> > acc9eb0a6073 ("ext4: add fs-verity read support")
> >
> > from the fscrypt tree and commit:
> >
> > eb754eb2a953 ("block: allow bio_for_each_segment_all() to iterate over multi-page bvec")
> >
> > from the block tree.
> >
> > I fixed it up (see below - the former moved the code modified by the
> > latter) and can carry the fix as necessary. This is now fixed as far as
> > linux-next is concerned, but any non trivial conflicts should be mentioned
> > to your upstream maintainer when your tree is submitted for merging.
> > You may also want to consider cooperating with the maintainer of the
> > conflicting tree to minimise any particularly complex conflicts.
>
> Ming, I'm pulling this, I thought we agreed none of these bullshit
> renames? The fact that a patch looks like this:
>
> - for_each_bvec(bv, (it)->bvecs, __cur_iter, __cur_iter) \
> + for_each_segment(bv, (it)->bvecs, __cur_iter, __cur_iter) \
>
> is SUPER annoying and does NOTHING but to cause merge conflicts.
>
> Resend it without that.

We need to differentiate 'segment' with 'bvec' in bvec helpers, which is
usually seldom used by drivers. For example, only two in-tree users(ceph, iov_iter).
That is why I rename it, and seems Christoph prefers to do it too.

Thanks,
Ming

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