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Restructure aio_return() to eliminate duplicated code and facilitate Giant

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This commit is contained in:
Alan Cox 2002-04-08 04:57:56 +00:00
parent 9c2cd7e5a9
commit c0bf5caa74
1 changed files with 15 additions and 21 deletions
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36
sys/kern/vfs_aio.c
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@ -1587,24 +1587,17 @@ aio_return(struct thread *td, struct aio_return_args *uap)
struct aiocb *ujob;
struct kaioinfo *ki;
ki = p->p_aioinfo;
if (ki == NULL)
return EINVAL;
ujob = uap->aiocbp;
jobref = fuword(&ujob->_aiocb_private.kernelinfo);
if (jobref == -1 || jobref == 0)
return EINVAL;
ki = p->p_aioinfo;
if (ki == NULL)
return EINVAL;
TAILQ_FOREACH(cb, &ki->kaio_jobdone, plist) {
if (((intptr_t) cb->uaiocb._aiocb_private.kernelinfo) ==
jobref) {
if (ujob == cb->uuaiocb) {
td->td_retval[0] =
cb->uaiocb._aiocb_private.status;
} else
td->td_retval[0] = EFAULT;
if (cb->uaiocb.aio_lio_opcode == LIO_WRITE) {
p->p_stats->p_ru.ru_oublock +=
cb->outputcharge;
@ -1613,8 +1606,7 @@ aio_return(struct thread *td, struct aio_return_args *uap)
p->p_stats->p_ru.ru_inblock += cb->inputcharge;
cb->inputcharge = 0;
}
aio_free_entry(cb);
return 0;
goto done;
}
}
s = splbio();
@ -1622,18 +1614,20 @@ aio_return(struct thread *td, struct aio_return_args *uap)
ncb = TAILQ_NEXT(cb, plist);
if (((intptr_t) cb->uaiocb._aiocb_private.kernelinfo)
== jobref) {
splx(s);
if (ujob == cb->uuaiocb) {
td->td_retval[0] =
cb->uaiocb._aiocb_private.status;
} else
td->td_retval[0] = EFAULT;
aio_free_entry(cb);
return 0;
break;
}
}
splx(s);
done:
if (cb != NULL) {
if (ujob == cb->uuaiocb) {
td->td_retval[0] =
cb->uaiocb._aiocb_private.status;
} else
td->td_retval[0] = EFAULT;
aio_free_entry(cb);
return (0);
}
return (EINVAL);
}