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Update the comment describing vm_page_grab() to reflect the previous

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revision and correct some of its style errors.
This commit is contained in:
Alan Cox 2004-04-24 21:36:23 +00:00
parent 7ef6ba5d27
commit 2ec91846fd
1 changed files with 5 additions and 6 deletions
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11
sys/vm/vm_page.c
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@ -1421,7 +1421,8 @@ vm_page_dontneed(vm_page_t m)
/*
* Grab a page, waiting until we are waken up due to the page
* changing state. We keep on waiting, if the page continues
* to be in the object. If the page doesn't exist, allocate it.
* to be in the object. If the page doesn't exist, first allocate it
* and then conditionally zero it.
*
* This routine may block.
*/
@ -1447,23 +1448,21 @@ retrylookup:
vm_page_wire(m);
vm_page_busy(m);
vm_page_unlock_queues();
return m;
return (m);
}
}
m = vm_page_alloc(object, pindex, allocflags & ~VM_ALLOC_RETRY);
if (m == NULL) {
VM_OBJECT_UNLOCK(object);
VM_WAIT;
VM_OBJECT_LOCK(object);
if ((allocflags & VM_ALLOC_RETRY) == 0)
return NULL;
return (NULL);
goto retrylookup;
}
if (allocflags & VM_ALLOC_ZERO && (m->flags & PG_ZERO) == 0)
pmap_zero_page(m);
return m;
return (m);
}
/*