Just like cifs and nfs, this short series enables rootfs support for 9p.
Bellow is an example which mounts v9fs with tag 'r' as rootfs in qemu
guest via virtio transport.
$ qemu-system-x86_64 -enable-kvm -cpu host -m 1024 \
-virtfs local,path=$rootfs_dir,mount_tag=r,security_model=passthrough,id=r \
-kernel /path/to/linux/arch/x86/boot/bzImage -nographic \
-append "root=/dev/v9fs v9fsroot=r,trans=virtio rw console=ttyS0 3"
Changbin Du (3):
9p: add support for root file systems
9p: doc: move to a new dedicated folder
9p: doc: add v9fsroot description
Documentation/filesystems/index.rst | 2 +-
Documentation/filesystems/{ => v9fs}/9p.rst | 0
Documentation/filesystems/v9fs/index.rst | 12 ++++
Documentation/filesystems/v9fs/v9fsroot.rst | 52 +++++++++++++++++
fs/9p/Kconfig | 6 ++
fs/9p/Makefile | 1 +
fs/9p/v9fsroot.c | 64 +++++++++++++++++++++
include/linux/root_dev.h | 1 +
init/do_mounts.c | 46 +++++++++++++++
9 files changed, 183 insertions(+), 1 deletion(-)
rename Documentation/filesystems/{ => v9fs}/9p.rst (100%)
create mode 100644 Documentation/filesystems/v9fs/index.rst
create mode 100644 Documentation/filesystems/v9fs/v9fsroot.rst
create mode 100644 fs/9p/v9fsroot.c
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2.30.2
