This patchset adds support of per-file DAX for virtiofs, which is
inspired by Ira Weiny's work on ext4[1] and xfs[2].
Currently virtiofs (in guest kernel) accepts per-file DAX flag from FUSE
server (in host).
Currently it is not implemented yet to change per-file DAX flag inside
guest kernel, e.g., by chattr(1).
Any comment is welcome. :)
[1] commit 9cb20f94afcd ("fs/ext4: Make DAX mount option a tri-state")
[2] commit 02beb2686ff9 ("fs/xfs: Make DAX mount option a tri-state")
Jeffle Xu (3):
fuse: add fuse_should_enable_dax() helper
fuse: Make DAX mount option a tri-state
fuse: add per-file DAX flag
fs/fuse/dax.c | 43 +++++++++++++++++++++++++++++++++++++--
fs/fuse/file.c | 4 ++--
fs/fuse/fuse_i.h | 16 +++++++++++----
fs/fuse/inode.c | 6 ++++--
fs/fuse/virtio_fs.c | 16 +++++++++++++--
include/uapi/linux/fuse.h | 5 +++++
6 files changed, 78 insertions(+), 12 deletions(-)
--
2.27.0
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