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(parent: 925a6f0) | patch
virtio/console: Add splice_write support
authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Thu, 9 Aug 2012 12:30:39 +0000 (21:30 +0900)
committerRusty Russell <rusty@rustcorp.com.au>
Fri, 28 Sep 2012 05:35:12 +0000 (15:05 +0930)
commiteb5e89fc70bb3f115b3206ed0c57d3aba1fdd155
tree1efa63701e815ea3ae7996ff505f050bfab56dd4tree
parent925a6f0bf8bd122d5d2429af7f0ca0fecf4ae71fcommit | diff
virtio/console: Add splice_write support

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>
drivers/char/virtio_console.c diff | blob | history
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