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thread-pool: clean up thread_pool_completion_bh()

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This patch simplifies thread_pool_completion_bh().

The function first checks elem->state:

  if (elem->state != THREAD_DONE) {
      continue;
  }

It then goes on to check elem->state == THREAD_DONE although we already
know this must be the case.

The QLIST_REMOVE() is duplicated down both branches of an if-else
statement so that can be lifted out as well.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1427992762-10126-1-git-send-email-stefanha@redhat.com
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2015-04-02 17:39:22 +01:00 committed by Kevin Wolf
parent d1a126c53d
commit 1faa5bb732
1 changed files with 6 additions and 8 deletions
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14
thread-pool.c
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@ -170,12 +170,12 @@ restart:
if (elem->state != THREAD_DONE) {
continue;
}
if (elem->state == THREAD_DONE) {
trace_thread_pool_complete(pool, elem, elem->common.opaque,
elem->ret);
}
if (elem->state == THREAD_DONE && elem->common.cb) {
QLIST_REMOVE(elem, all);
trace_thread_pool_complete(pool, elem, elem->common.opaque,
elem->ret);
QLIST_REMOVE(elem, all);
if (elem->common.cb) {
/* Read state before ret. */
smp_rmb();
@ -188,8 +188,6 @@ restart:
qemu_aio_unref(elem);
goto restart;
} else {
/* remove the request */
QLIST_REMOVE(elem, all);
qemu_aio_unref(elem);
}
}