linux-kernel - Re: [PATCH 00/11] Remove AS_EIO and AS

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Date:   Mon, 09 Jan 2023 10:31:58 -0500
From:   Jeff Layton <jlayton@...nel.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>
Subject: Re: [PATCH 00/11] Remove AS_EIO and AS_ENOSPC

On Mon, 2023-01-09 at 05:18 +0000, Matthew Wilcox (Oracle) wrote:
> Finish the work of converting every user to the "new" wb_err
> infrastructure.  This will clash with Christoph's patch series to remove
> folio_write_one(), so I'll redo this after that patch series goes in.
> 
> Matthew Wilcox (Oracle) (11):
>   memory-failure: Remove comment referencing AS_EIO
>   filemap: Remove filemap_check_and_keep_errors()
>   f2fs: Convert f2fs_wait_on_node_pages_writeback() to errseq
>   fuse: Convert fuse_flush() to use file_check_and_advance_wb_err()
>   page-writeback: Convert folio_write_one() to use an errseq
>   filemap: Convert filemap_write_and_wait_range() to use errseq
>   filemap: Convert filemap_fdatawait_range() to errseq
>   cifs: Remove call to filemap_check_wb_err()
>   mm: Remove AS_EIO and AS_ENOSPC
>   mm: Remove filemap_fdatawait_range_keep_errors()

>   mm: Remove filemap_fdatawait_keep_errors()
> 
>  block/bdev.c            |   8 +--
>  fs/btrfs/extent_io.c    |   6 +--
>  fs/cifs/file.c          |   8 ++-
>  fs/f2fs/data.c          |   2 +-
>  fs/f2fs/node.c          |   4 +-
>  fs/fs-writeback.c       |   7 +--
>  fs/fuse/file.c          |   3 +-
>  fs/jbd2/commit.c        |  12 ++---
>  fs/xfs/scrub/bmap.c     |   2 +-
>  include/linux/pagemap.h |  23 ++------
>  mm/filemap.c            | 113 +++++++---------------------------------
>  mm/memory-failure.c     |  28 ----------
>  mm/page-writeback.c     |  17 +++---
>  13 files changed, 51 insertions(+), 182 deletions(-)
> 

Now that I got my understanding straight about unseen errors, I think
this looks good. I think it'd be best to avoid advancing f_wb_err in
->flush operations but the rest of this looks fine.

You can add this to all but #4 (and that one should be easily fixable).

Reviewed-by: Jeff Layton <jlayton@...nel.org>