Hi all,
On Mon, 15 Feb 2021 08:46:34 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> On Wed, 27 Jan 2021 22:39:18 +1100 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> >
> > Today's linux-next merge of the akpm-current tree got a conflict in:
> >
> > fs/btrfs/file.c
> >
> > between commit:
> >
> > 0225a20db6d8 ("btrfs: Prevent nowait or async read from doing sync IO")
> >
> > from the btrfs tree and commit:
> >
> > ddcd14c48a30 ("mm/filemap: rename generic_file_buffered_read to filemap_read")
> >
> > from the akpm-current tree.
> >
> > I fixed it up (see below) 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.
> >
> > diff --cc fs/btrfs/file.c
> > index 5282f456c99c,898ef7b792b7..000000000000
> > --- a/fs/btrfs/file.c
> > +++ b/fs/btrfs/file.c
> > @@@ -3629,18 -3639,7 +3629,18 @@@ static ssize_t btrfs_file_read_iter(str
> > return ret;
> > }
> >
> > - return filemap_read(iocb, to, ret);
> > + if (iocb->ki_flags & IOCB_NOWAIT)
> > + iocb->ki_flags |= IOCB_NOIO;
> > +
> > - ret = generic_file_buffered_read(iocb, to, ret);
> > ++ ret = filemap_read(iocb, to, ret);
> > +
> > + if (iocb->ki_flags & IOCB_NOWAIT) {
> > + iocb->ki_flags &= ~IOCB_NOIO;
> > + if (ret == 0)
> > + ret = -EAGAIN;
> > + }
> > +
> > + return ret;
> > }
> >
> > const struct file_operations btrfs_file_operations = {
>
> With the merge window about to open, this is a reminder that this
> conflict still exists.
>
> The btrfs tree commit is now
>
> 1605f1b63c76 ("btrfs: Prevent nowait or async read from doing sync IO")
Now
5b1c5c4216f2 ("btrfs: Prevent nowait or async read from doing sync IO")
> The akpm-current commit is now
>
> de45c82ebea8 ("mm/filemap: rename generic_file_buffered_read to filemap_read")
Now in Linus' tree as
87fa0f3eb267 ("mm/filemap: rename generic_file_buffered_read to filemap_read")
This ia now a conflict between the btrfs tree and Linus' tree.
--
Cheers,
Stephen Rothwell
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