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    Subject[PATCH v3 00/19][RFC] virtio-fs: Enable DAX support
    Date
    Hi,

    This patch series enables DAX support for virtio-fs filesystem. Patches
    are based on 5.3-rc5 kernel and need first patch series posted for
    virtio-fs support with subject "virtio-fs: shared file system for virtual
    machines".

    https://www.redhat.com/archives/virtio-fs/2019-August/msg00281.html

    Enabling DAX seems to improve performance for most of the operations
    in general a great deal. I have reported performance numbers in first patch
    series so I am not repeating these here.

    Any comments or feedback is welcome.

    Thanks
    Vivek

    Sebastien Boeuf (3):
    virtio: Add get_shm_region method
    virtio: Implement get_shm_region for PCI transport
    virtio: Implement get_shm_region for MMIO transport

    Stefan Hajnoczi (4):
    dax: remove block device dependencies
    fuse, dax: add fuse_conn->dax_dev field
    virtio_fs, dax: Set up virtio_fs dax_device
    fuse, dax: add DAX mmap support

    Vivek Goyal (12):
    dax: Pass dax_dev to dax_writeback_mapping_range()
    fuse: Keep a list of free dax memory ranges
    fuse: implement FUSE_INIT map_alignment field
    fuse: Introduce setupmapping/removemapping commands
    fuse, dax: Implement dax read/write operations
    fuse: Define dax address space operations
    fuse, dax: Take ->i_mmap_sem lock during dax page fault
    fuse: Maintain a list of busy elements
    dax: Create a range version of dax_layout_busy_page()
    fuse: Add logic to free up a memory range
    fuse: Release file in process context
    fuse: Take inode lock for dax inode truncation

    drivers/dax/super.c | 3 +-
    drivers/virtio/virtio_mmio.c | 32 +
    drivers/virtio/virtio_pci_modern.c | 108 +++
    fs/dax.c | 89 +-
    fs/ext2/inode.c | 2 +-
    fs/ext4/inode.c | 2 +-
    fs/fuse/cuse.c | 3 +-
    fs/fuse/dir.c | 2 +
    fs/fuse/file.c | 1206 +++++++++++++++++++++++++++-
    fs/fuse/fuse_i.h | 99 ++-
    fs/fuse/inode.c | 138 +++-
    fs/fuse/virtio_fs.c | 134 +++-
    fs/xfs/xfs_aops.c | 2 +-
    include/linux/dax.h | 12 +-
    include/linux/virtio_config.h | 17 +
    include/uapi/linux/fuse.h | 47 +-
    include/uapi/linux/virtio_fs.h | 3 +
    include/uapi/linux/virtio_mmio.h | 11 +
    include/uapi/linux/virtio_pci.h | 11 +-
    19 files changed, 1868 insertions(+), 53 deletions(-)

    --
    2.20.1

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