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migration: yay, buffering is gone

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Buffering was needed because blocking writes could take a long time
and starve other threads seeking to grab the big QEMU mutex.

Now that all writes (except within _complete callbacks) are done
outside the big QEMU mutex, we do not need buffering at all.

Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-02-22 17:36:29 +01:00 • committed by Juan Quintela
parent 9b09503752
commit edaae611f6
3 changed files with 22 additions and 61 deletions
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1
savevm.c
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@ -1724,6 +1724,7 @@ void qemu_savevm_state_complete(QEMUFile *f)
}
qemu_put_byte(f, QEMU_VM_EOF);
qemu_fflush(f);
}
uint64_t qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size)