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| author | alc <alc@FreeBSD.org> | 2002-12-03 04:00:42 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2002-12-03 04:00:42 +0000 |
| commit | 1195f220807e870090d0e221c3457ebac2301692 (patch) | |
| tree | 0817e774128a35a2c0d028836809e83b2d828dc8 | |
| parent | e70e70c250359ed2e7072c2b89a82cb0ec9780b0 (diff) | |
| download | FreeBSD-src-1195f220807e870090d0e221c3457ebac2301692.zip FreeBSD-src-1195f220807e870090d0e221c3457ebac2301692.tar.gz | |
Avoid recursive acquisition of the page queues lock in pmap_unuse_pt().
Approved by: re
| -rw-r--r-- | sys/amd64/amd64/pmap.c | 4 | ||||
| -rw-r--r-- | sys/i386/i386/pmap.c | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index c842eff..8ee5886 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -1213,7 +1213,9 @@ pmap_unuse_pt(pmap_t pmap, vm_offset_t va, vm_page_t mpte) (pmap->pm_ptphint->pindex == ptepindex)) { mpte = pmap->pm_ptphint; } else { - mpte = pmap_page_lookup(pmap->pm_pteobj, ptepindex); + while ((mpte = vm_page_lookup(pmap->pm_pteobj, ptepindex)) != NULL && + vm_page_sleep_if_busy(mpte, FALSE, "pulook")) + vm_page_lock_queues(); pmap->pm_ptphint = mpte; } } diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index c842eff..8ee5886 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -1213,7 +1213,9 @@ pmap_unuse_pt(pmap_t pmap, vm_offset_t va, vm_page_t mpte) (pmap->pm_ptphint->pindex == ptepindex)) { mpte = pmap->pm_ptphint; } else { - mpte = pmap_page_lookup(pmap->pm_pteobj, ptepindex); + while ((mpte = vm_page_lookup(pmap->pm_pteobj, ptepindex)) != NULL && + vm_page_sleep_if_busy(mpte, FALSE, "pulook")) + vm_page_lock_queues(); pmap->pm_ptphint = mpte; } } |
