Reduce the number of times that we acquire and release the page queues
lock by making vm_page_rename()'s caller, rather than vm_page_rename(), responsible for acquiring it.
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parent
9d36cde4bf
commit
a28cc55e5b
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=108384
@ -125,9 +125,7 @@ vm_pgmoveco(mapa, srcobj, kaddr, uaddr)
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}
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kpindex = kern_pg->pindex;
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vm_page_busy(kern_pg);
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vm_page_unlock_queues();
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vm_page_rename(kern_pg, uobject, upindex);
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vm_page_lock_queues();
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vm_page_flag_clear(kern_pg, PG_BUSY);
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kern_pg->valid = VM_PAGE_BITS_ALL;
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vm_page_unlock_queues();
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@ -704,7 +704,6 @@ RetryFault:;
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vm_page_lock_queues();
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pmap_remove_all(fs.first_m);
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vm_page_free(fs.first_m);
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vm_page_unlock_queues();
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fs.first_m = NULL;
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/*
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@ -714,7 +713,6 @@ RetryFault:;
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*/
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vm_page_rename(fs.m, fs.first_object, fs.first_pindex);
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fs.first_m = fs.m;
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vm_page_lock_queues();
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vm_page_busy(fs.first_m);
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vm_page_unlock_queues();
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fs.m = NULL;
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@ -1245,10 +1245,8 @@ vm_object_split(vm_map_entry_t entry)
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goto retry;
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vm_page_busy(m);
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vm_page_unlock_queues();
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vm_page_rename(m, new_object, idx);
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/* page automatically made dirty by rename and cache handled */
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vm_page_lock_queues();
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vm_page_busy(m);
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vm_page_unlock_queues();
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}
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@ -1455,7 +1453,9 @@ vm_object_backing_scan(vm_object_t object, int op)
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* If the page was mapped to a process, it can remain
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* mapped through the rename.
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*/
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vm_page_lock_queues();
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vm_page_rename(p, object, new_pindex);
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vm_page_unlock_queues();
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/* page automatically made dirty by rename */
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}
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p = next;
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@ -682,13 +682,11 @@ vm_page_rename(vm_page_t m, vm_object_t new_object, vm_pindex_t new_pindex)
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int s;
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s = splvm();
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vm_page_lock_queues();
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vm_page_remove(m);
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vm_page_insert(m, new_object, new_pindex);
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if (m->queue - m->pc == PQ_CACHE)
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vm_page_deactivate(m);
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vm_page_dirty(m);
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vm_page_unlock_queues();
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splx(s);
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}
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