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From:   Goldwyn Rodrigues <rgoldwyn@suse.de>
To:     linux-fsdevel@vger.kernel.org
Cc:     linux-btrfs@vger.kernel.org, david@fromorbit.com, hch@lst.de,
        johannes.thumshirn@wdc.com, dsterba@suse.com,
        darrick.wong@oracle.com, josef@toxicpanda.com
Subject: [PATCH 0/15 v2] BTRFS DIO inode locking/D_SYNC fix
Date:   Mon, 21 Sep 2020 09:43:38 -0500
Message-Id: <20200921144353.31319-1-rgoldwyn@suse.de>
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I have merged two series here:
(1) Using inode_lock_shared for <EOF DIO writes
(2) Fix O_DSYNC | O_DIRECT

Both require inode locking to be pushed closer to I/O calls and thought
was relevant. (2) requires changes in iomap code. If there is a need to 
separate the two please let me know. I don't have any ulterior motives
here ;)

Testing: xfstests on both btrfs and xfs

Git: https://github.com/goldwynr/linux/tree/btrfs-inode-lock

Changes since v1:

 - Changed fix for deadlock due to O_DSYNC (iomap patches added)
 - btrfs_inode_lock() shifted to inode.c
 - Reinstated lockdep_assert_held() in iomap_dio_rw()

-- 
Goldwyn

 fs/btrfs/btrfs_inode.h |   28 --
 fs/btrfs/ctree.h       |   13 +
 fs/btrfs/file.c        |  497 +++++++++++++++++++++++++++----------------------
 fs/btrfs/inode.c       |  176 +++--------------
 fs/btrfs/transaction.h |    1
 fs/direct-io.c         |   19 -
 fs/iomap/direct-io.c   |   38 ++-
 include/linux/fs.h     |    2
 include/linux/iomap.h  |    5
 9 files changed, 355 insertions(+), 424 deletions(-)