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Initialize marker pages as held rather than fictitious/wired. Marking the

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page as held is more useful as a safety precaution in case someone forgets
to check for PG_MARKER.

Reviewed by:	kib
This commit is contained in:
Alan Cox 2011-07-02 23:34:47 +00:00
parent 34e5f64b49
commit a8229fa37c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=223729
1 changed files with 8 additions and 2 deletions
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10
sys/vm/vm_pageout.c
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@ -216,15 +216,21 @@ static void vm_req_vmdaemon(int req);
#endif
static void vm_pageout_page_stats(void);
/*
* Initialize a dummy page for marking the caller's place in the specified
* paging queue. In principle, this function only needs to set the flag
* PG_MARKER. Nonetheless, it sets the flag VPO_BUSY and initializes the hold
* count to one as safety precautions.
*/
static void
vm_pageout_init_marker(vm_page_t marker, u_short queue)
{
bzero(marker, sizeof(*marker));
marker->flags = PG_FICTITIOUS | PG_MARKER;
marker->flags = PG_MARKER;
marker->oflags = VPO_BUSY;
marker->queue = queue;
marker->wire_count = 1;
marker->hold_count = 1;
}
/*