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Modify vm_pageq_requeue() to handle a PQ_NONE page without dereferencing

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a NULL pointer; remove some now unused code.
This commit is contained in:
Alan Cox 2003-06-26 03:14:40 +00:00
parent 01e5a2aede
commit 2099bdfded
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=116860
1 changed files with 5 additions and 14 deletions
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19
sys/vm/vm_pageq.c
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@ -46,26 +46,17 @@ vm_pageq_init(void)
}
}
static __inline struct vpgqueues *
vm_pageq_aquire(int queue)
{
struct vpgqueues *vpq = NULL;
if (queue != PQ_NONE) {
vpq = &vm_page_queues[queue];
}
return (vpq);
}
void
vm_pageq_requeue(vm_page_t m)
{
int queue = m->queue;
struct vpgqueues *vpq;
vpq = vm_pageq_aquire(queue);
TAILQ_REMOVE(&vpq->pl, m, pageq);
TAILQ_INSERT_TAIL(&vpq->pl, m, pageq);
if (queue != PQ_NONE) {
vpq = &vm_page_queues[queue];
TAILQ_REMOVE(&vpq->pl, m, pageq);
TAILQ_INSERT_TAIL(&vpq->pl, m, pageq);
}
}
/*