Re: linux-next: manual merge of the xfs tree with Linus' tree

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On Fri, Dec 22, 2017 at 09:50:41AM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> Today's linux-next merge of the xfs tree got a conflict in:
> 
>   fs/xfs/xfs_super.c
> 
> between commit:
> 
>   1751e8a6cb93 ("Rename superblock flags (MS_xyz -> SB_xyz)")
> 
> from Linus' tree and commit:
> 
>   10ddf64e420f ("xfs: remove leftover CoW reservations when remounting ro")
> 
> from the xfs 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.

Ok, that's exactly the merge conflict that I was expecting to see.
I'll make a note if/when I get around to sending a pull request.
Thank you.

--D

> -- 
> Cheers,
> Stephen Rothwell
> 
> diff --cc fs/xfs/xfs_super.c
> index 5122d3021117,2db6a40a96bd..000000000000
> --- a/fs/xfs/xfs_super.c
> +++ b/fs/xfs/xfs_super.c
> @@@ -1368,7 -1369,15 +1369,15 @@@ xfs_fs_remount
>   	}
>   
>   	/* rw -> ro */
>  -	if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) {
>  +	if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & SB_RDONLY)) {
> + 		/* Get rid of any leftover CoW reservations... */
> + 		cancel_delayed_work_sync(&mp->m_cowblocks_work);
> + 		error = xfs_icache_free_cowblocks(mp, NULL);
> + 		if (error) {
> + 			xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
> + 			return error;
> + 		}
> + 
>   		/* Free the per-AG metadata reservation pool. */
>   		error = xfs_fs_unreserve_ag_blocks(mp);
>   		if (error) {
> --
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