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o Lock accesses to the page queues.

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This commit is contained in:
Alan Cox 2002-07-11 18:48:05 +00:00
parent ef6d75ff7d
commit 97646f567d
1 changed files with 6 additions and 1 deletions
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7
sys/kern/kern_exec.c
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@ -590,15 +590,18 @@ exec_map_first_page(imgp)
if ((rv != VM_PAGER_OK) || (ma[0] == NULL) || (ma[0]->valid == 0)) {
if (ma[0]) {
vm_page_lock_queues();
vm_page_protect(ma[0], VM_PROT_NONE);
vm_page_free(ma[0]);
vm_page_unlock_queues();
}
return EIO;
}
}
vm_page_lock_queues();
vm_page_wire(ma[0]);
vm_page_wakeup(ma[0]);
vm_page_unlock_queues();
pmap_qenter((vm_offset_t)imgp->image_header, ma, 1);
imgp->firstpage = ma[0];
@ -614,7 +617,9 @@ exec_unmap_first_page(imgp)
if (imgp->firstpage) {
pmap_qremove((vm_offset_t)imgp->image_header, 1);
vm_page_lock_queues();
vm_page_unwire(imgp->firstpage, 1);
vm_page_unlock_queues();
imgp->firstpage = NULL;
}
}