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o Lock page queue accesses by vm_page_wire().

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This commit is contained in:
Alan Cox 2002-07-14 19:45:46 +00:00
parent e16cfdbea4
commit 9175709532
1 changed files with 6 additions and 0 deletions
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6
sys/kern/vfs_bio.c
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@ -2698,8 +2698,10 @@ allocbuf(struct buf *bp, int size)
VM_WAIT;
vm_pageout_deficit += desiredpages - bp->b_npages;
} else {
vm_page_lock_queues();
vm_page_wire(m);
vm_page_wakeup(m);
vm_page_unlock_queues();
bp->b_flags &= ~B_CACHE;
bp->b_pages[bp->b_npages] = m;
++bp->b_npages;
@ -2732,8 +2734,10 @@ allocbuf(struct buf *bp, int size)
(cnt.v_free_min + cnt.v_cache_min))) {
pagedaemon_wakeup();
}
vm_page_lock_queues();
vm_page_flag_clear(m, PG_ZERO);
vm_page_wire(m);
vm_page_unlock_queues();
bp->b_pages[bp->b_npages] = m;
++bp->b_npages;
}
@ -3354,9 +3358,11 @@ vm_hold_load_pages(struct buf * bp, vm_offset_t from, vm_offset_t to)
VM_WAIT;
goto tryagain;
}
vm_page_lock_queues();
vm_page_wire(p);
p->valid = VM_PAGE_BITS_ALL;
vm_page_flag_clear(p, PG_ZERO);
vm_page_unlock_queues();
pmap_qenter(pg, &p, 1);
bp->b_pages[index] = p;
vm_page_wakeup(p);