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one more BUSY

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This commit is contained in:
Frans Kaashoek 2016-09-13 14:51:44 -04:00
parent 564a1cf0cb
commit e85cb90cbf
1 changed files with 2 additions and 2 deletions
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4
memide.c
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@ -39,8 +39,8 @@ iderw(struct buf *b)
{ {
uchar *p; uchar *p;
if(!(b->flags & B_BUSY)) if(!holdingsleep(&b->lock))
panic("iderw: buf not busy"); panic("iderw: buf not locked");
if((b->flags & (B_VALID|B_DIRTY)) == B_VALID) if((b->flags & (B_VALID|B_DIRTY)) == B_VALID)
panic("iderw: nothing to do"); panic("iderw: nothing to do");
if(b->dev != 1) if(b->dev != 1)