:hi all,
:
:Why cant pages in the PQ_CACHE queue be freed at interrupt time. as far
:as i could see these pages are clean, though they are still associated
:with the object. So what prevents us from dissociating them from the
:object . we dont have to do any io and hence not block.
:
:well maybe i am missing something here. will somebody please explain it
:to me??
:
:thanx in advance
:
:joy
The VM routines that manage pages associated with objects are not
protected against interrupts, so interrupts aren't allowed to change
page-object associations. Otherwise an interrupt at just the wrong time
could corrupt the mainline kernel VM code.
-Matt
Matthew Dillon
<[EMAIL PROTECTED]>
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