virtio/console: Add splice_write support

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Enable to use splice_write from pipe to virtio-console port.
This steals pages from pipe and directly send it to host.

Note that this may accelerate only the guest to host path.

Changes in v2:
 - Use GFP_KERNEL instead of GFP_ATOMIC in syscall context function.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

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Masami Hiramatsu 2012-08-09 21:30:39 +09:00 • committed by Rusty Russell

parent 925a6f0bf8

commit eb5e89fc70

1 changed files with 128 additions and 8 deletions

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drivers/char/virtio_console.c

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