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(parent: 262db38) | patch
qemu-nbd: throttle requests
authorPaolo Bonzini <pbonzini@redhat.com>
Mon, 19 Sep 2011 13:25:40 +0000 (15:25 +0200)
committerPaolo Bonzini <pbonzini@redhat.com>
Thu, 22 Dec 2011 10:53:59 +0000 (11:53 +0100)
commit41996e3803119541d43bfa59060024a22b803342
tree59a003a257c875ee6479d5ed0a9ee4e35f383ccftree | snapshot
parent262db38871b9a2613761cc5f05c4cf697e246a68commit | diff
qemu-nbd: throttle requests

Limiting the number of in-flight requests is implemented very simply
with a can_read callback.  It does not require a semaphore, unlike the
client side in block/nbd.c, because we can throttle directly the creation
of coroutines.  The client side can have a coroutine created at any time
when an I/O request is made.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
nbd.c diff | blob | history
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