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Code Issues Releases Activity

o Correct the initialization of aiolio_zone: Each entry was 16 times larger

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than necessary.
 o Move a rarely-used goto label inside a critical section so that we don't
   perform an splnet() for which there is no corresponding splx().
 o Remove unnecessary splnet()/splx() around accesses to kaioinfo::kaio_jobdone
   in aio_return().
 o Use TAILQ_FOREACH for simple cases of iteration over kaioinfo::kaio_jobdone.
This commit is contained in:
Alan Cox 2002-01-14 07:26:33 +00:00
parent a40d159b40
commit c6c191b26f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=89332
1 changed files with 5 additions and 13 deletions
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18
sys/kern/vfs_aio.c
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@ -316,8 +316,7 @@ aio_onceonly(void)
aiop_zone = zinit("AIOP", sizeof(struct aiothreadlist), 0, 0, 1);
aiocb_zone = zinit("AIOCB", sizeof(struct aiocblist), 0, 0, 1);
aiol_zone = zinit("AIOL", AIO_LISTIO_MAX*sizeof(intptr_t), 0, 0, 1);
aiolio_zone = zinit("AIOLIO", AIO_LISTIO_MAX * sizeof(struct
aio_liojob), 0, 0, 1);
aiolio_zone = zinit("AIOLIO", sizeof(struct aio_liojob), 0, 0, 1);
aiod_timeout = AIOD_TIMEOUT_DEFAULT;
aiod_lifetime = AIOD_LIFETIME_DEFAULT;
jobrefid = 1;
@ -1518,8 +1517,8 @@ _aio_aqueue(struct thread *td, struct aiocb *job, struct aio_liojob *lj, int typ
* (thread) due to resource issues, we return an error for now (EAGAIN),
* which is likely not the correct thing to do.
*/
retryproc:
s = splnet();
retryproc:
if ((aiop = TAILQ_FIRST(&aio_freeproc)) != NULL) {
TAILQ_REMOVE(&aio_freeproc, aiop, list);
TAILQ_INSERT_TAIL(&aio_activeproc, aiop, list);
@ -1588,12 +1587,9 @@ aio_return(struct thread *td, struct aio_return_args *uap)
if (jobref == -1 || jobref == 0)
return EINVAL;
s = splnet();
for (cb = TAILQ_FIRST(&ki->kaio_jobdone); cb; cb = TAILQ_NEXT(cb,
plist)) {
TAILQ_FOREACH(cb, &ki->kaio_jobdone, 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;
@ -1611,8 +1607,6 @@ aio_return(struct thread *td, struct aio_return_args *uap)
return 0;
}
}
splx(s);
s = splbio();
for (cb = TAILQ_FIRST(&ki->kaio_bufdone); cb; cb = ncb) {
ncb = TAILQ_NEXT(cb, plist);
@ -1695,8 +1689,7 @@ aio_suspend(struct thread *td, struct aio_suspend_args *uap)
error = 0;
for (;;) {
for (cb = TAILQ_FIRST(&ki->kaio_jobdone); cb; cb =
TAILQ_NEXT(cb, plist)) {
TAILQ_FOREACH(cb, &ki->kaio_jobdone, plist) {
for (i = 0; i < njoblist; i++) {
if (((intptr_t)
cb->uaiocb._aiocb_private.kernelinfo) ==
@ -1885,8 +1878,7 @@ aio_error(struct thread *td, struct aio_error_args *uap)
if ((jobref == -1) || (jobref == 0))
return EINVAL;
for (cb = TAILQ_FIRST(&ki->kaio_jobdone); cb; cb = TAILQ_NEXT(cb,
plist)) {
TAILQ_FOREACH(cb, &ki->kaio_jobdone, plist) {
if (((intptr_t)cb->uaiocb._aiocb_private.kernelinfo) ==
jobref) {
td->td_retval[0] = cb->uaiocb._aiocb_private.error;