~lttng/lttng-modules/trunk

Viewing all changes in revision 1624.

  • Committer: Mathieu Desnoyers
  • Author(s): Michael Jeanson
  • Date: 2021-07-13 19:27:50 UTC
  • Revision ID: git-v1:e9a886564df56b3c6e213cebfcbc3fa1e468abad
fix: btrfs: pass btrfs_inode to btrfs_writepage_endio_finish_ordered() (v5.14)

See upstream commit:

  commit 38a39ac77e089515acbe85c6c70c3df1e728357d
  Author: Qu Wenruo <wqu@suse.com>
  Date:   Thu Apr 8 20:32:27 2021 +0800

    btrfs: pass btrfs_inode to btrfs_writepage_endio_finish_ordered()

    There is a pretty bad abuse of btrfs_writepage_endio_finish_ordered() in
    end_compressed_bio_write().

    It passes compressed pages to btrfs_writepage_endio_finish_ordered(),
    which is only supposed to accept inode pages.

    Thankfully the important info here is the inode, so let's pass
    btrfs_inode directly into btrfs_writepage_endio_finish_ordered(), and
    make @page parameter optional.

    By this, end_compressed_bio_write() can happily pass page=NULL while
    still getting everything done properly.

    Also, to cooperate with such modification, replace @page parameter for
    trace_btrfs_writepage_end_io_hook() with btrfs_inode.
    Although this removes page_index info, the existing start/len should be
    enough for most usage.

Change-Id: If96e99c2d9533d96d9d1aa6460bb7fd3ac9ed7ab
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

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