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Extend the scope of the page queues lock in vm_pgmoveco().

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This commit is contained in:
alc 2002-12-20 21:18:29 +00:00
parent cf1d112d8e
commit 31d637dca5
1 changed files with 4 additions and 4 deletions
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8
sys/kern/kern_subr.c
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@ -110,9 +110,8 @@ vm_pgmoveco(mapa, srcobj, kaddr, uaddr)
vm_page_busy(user_pg);
pmap_remove_all(user_pg);
vm_page_free(user_pg);
vm_page_unlock_queues();
}
} else
vm_page_lock_queues();
if (kern_pg->busy || ((kern_pg->queue - kern_pg->pc) == PQ_FREE) ||
(kern_pg->hold_count != 0)|| (kern_pg->flags & PG_BUSY)) {
printf("vm_pgmoveco: pindex(%lu), busy(%d), PG_BUSY(%d), "
@ -125,12 +124,13 @@ vm_pgmoveco(mapa, srcobj, kaddr, uaddr)
panic("vm_pgmoveco: renaming busy page");
}
kpindex = kern_pg->pindex;
vm_page_lock_queues();
vm_page_busy(kern_pg);
vm_page_unlock_queues();
vm_page_rename(kern_pg, uobject, upindex);
vm_page_lock_queues();
vm_page_flag_clear(kern_pg, PG_BUSY);
kern_pg->valid = VM_PAGE_BITS_ALL;
vm_page_unlock_queues();
vm_map_lookup_done(map, entry);
return(KERN_SUCCESS);