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Revert r309372

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The bug intended to be fixed by r309372 was already addressed by r296178,
so revert my change.

Reported by:	seph
This commit is contained in:
Ryan Stone 2016-12-02 15:38:34 +00:00
parent 5619c99fb3
commit 669f39b29c
1 changed files with 5 additions and 7 deletions
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12
sys/sys/buf_ring.h
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@ -67,13 +67,11 @@ buf_ring_enqueue(struct buf_ring *br, void *buf)
uint32_t prod_head, prod_next, cons_tail;
#ifdef DEBUG_BUFRING
int i;
if (br->br_cons_head != br->br_prod_head) {
for (i = (br->br_cons_head + 1) & br->br_cons_mask; i != br->br_prod_head;
i = ((i + 1) & br->br_cons_mask))
if(br->br_ring[i] == buf)
panic("buf=%p already enqueue at %d prod=%d cons=%d",
buf, i, br->br_prod_tail, br->br_cons_tail);
}
for (i = br->br_cons_head; i != br->br_prod_head;
i = ((i + 1) & br->br_cons_mask))
if(br->br_ring[i] == buf)
panic("buf=%p already enqueue at %d prod=%d cons=%d",
buf, i, br->br_prod_tail, br->br_cons_tail);
#endif
critical_enter();
do {