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| author |   Vivek Goyal <vgoyal@redhat.com> | 2020-08-19 18:19:51 -0400 |
|---|---|---|
| committer |   Miklos Szeredi <mszeredi@redhat.com> | 2020-09-10 11:39:23 +0200 |
| commit | c2d0ad00d948de73c78f05d2b3e5bdfa605035cc (patch) | |
| tree | dbc7decd77eb124264832633bb77b1b3396b8a27 /fs/fuse/Kconfig | |
| parent | virtiofs: introduce setupmapping/removemapping commands (diff) | |
| download | linux-dev-c2d0ad00d948de73c78f05d2b3e5bdfa605035cc.tar.xz linux-dev-c2d0ad00d948de73c78f05d2b3e5bdfa605035cc.zip | |
virtiofs: implement dax read/write operations
This patch implements basic DAX support. mmap() is not implemented
yet and will come in later patches. This patch looks into implemeting
read/write.
We make use of interval tree to keep track of per inode dax mappings.
Do not use dax for file extending writes, instead just send WRITE message
to daemon (like we do for direct I/O path). This will keep write and
i_size change atomic w.r.t crash.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Peng Tao <tao.peng@linux.alibaba.com>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse/Kconfig')
| -rw-r--r-- | fs/fuse/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/fuse/Kconfig b/fs/fuse/Kconfig index fddd40630077..40ce9a1c12e5 100644 --- a/fs/fuse/Kconfig +++ b/fs/fuse/Kconfig @@ -42,6 +42,7 @@ config VIRTIO_FS config FUSE_DAX bool "Virtio Filesystem Direct Host Memory Access support" default y + select INTERVAL_TREE depends on VIRTIO_FS depends on FS_DAX depends on DAX_DRIVER |