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vhost_user_fs: add fs cache request operations

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This introduces setupmapping and removemapping methods to server.rs,
passthrough.rs and filesystem.rs in order to support virtiofs dax mode
inside guest.

Since we don't really want the server.rs to know that it is dealing with
vhost-user specifically, this is making it more generic by adding a new
trait which has three functions map()/unmap()/sync() corresponding to
fs_slave_{map, unmap, sync}, server.rs will take anything that implements
the trait.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
This commit is contained in:
Liu Bo
2020-02-12 15:08:35 -08:00
committed by Rob Bradford
parent 956a84f73a
commit 3f09eff6c5
7 changed files with 227 additions and 1 deletions
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@@ -1103,6 +1103,7 @@ dependencies = [
"bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
"log 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
"vhost_rs 0.1.0",
"vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
"vm-virtio 0.1.0",
]