linux-kernel - [RFC PATCH V2 0/9] Introduce attach/clear_page

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Date:   Thu, 30 Apr 2020 23:44:41 +0200
From:   Guoqing Jiang <guoqing.jiang@...ud.ionos.com>
To:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     hch@...radead.org, david@...morbit.com, willy@...radead.org,
        Guoqing Jiang <guoqing.jiang@...ud.ionos.com>
Subject: [RFC PATCH V2 0/9] Introduce attach/clear_page_private to cleanup code

Hi,

Based on the previous thread [1], this patchset introduces attach_page_private
and clear_page_private to replace attach_page_buffers and __clear_page_buffers.
Thanks a lot for the constructive suggestions and comments from Christoph,
Matthew and Dave.

And sorry for cross post to different lists since it modifies different subsystems.

RFC -> RFC V2:

1. rename the new functions and add comments for them.
2. change the return type of attach_page_private.
3. call attach_page_private(newpage, clear_page_private(page)) to cleanup code further.
4. avoid potential use-after-free in orangefs.

[1]. https://lore.kernel.org/linux-fsdevel/20200420221424.GH5820@bombadil.infradead.org/

Thanks,
Guoqing

Guoqing Jiang (9):
  include/linux/pagemap.h: introduce attach/clear_page_private
  md: remove __clear_page_buffers and use attach/clear_page_private
  btrfs: use attach/clear_page_private
  fs/buffer.c: use attach/clear_page_private
  f2fs: use attach/clear_page_private
  iomap: use attach/clear_page_private
  ntfs: replace attach_page_buffers with attach_page_private
  orangefs: use attach/clear_page_private
  buffer_head.h: remove attach_page_buffers

 drivers/md/md-bitmap.c      | 12 ++----------
 fs/btrfs/disk-io.c          |  4 +---
 fs/btrfs/extent_io.c        | 21 ++++++---------------
 fs/btrfs/inode.c            | 23 +++++------------------
 fs/buffer.c                 | 16 ++++------------
 fs/f2fs/f2fs.h              | 11 ++---------
 fs/iomap/buffered-io.c      | 19 ++++---------------
 fs/ntfs/aops.c              |  2 +-
 fs/ntfs/mft.c               |  2 +-
 fs/orangefs/inode.c         | 32 ++++++--------------------------
 include/linux/buffer_head.h |  8 --------
 include/linux/pagemap.h     | 35 +++++++++++++++++++++++++++++++++++
 12 files changed, 67 insertions(+), 118 deletions(-)

-- 
2.17.1