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| author | alc <alc@FreeBSD.org> | 2010-06-03 03:55:22 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2010-06-03 03:55:22 +0000 |
| commit | ef98f25c38c8c0ae820e7bd3576f5ec67421729b (patch) | |
| tree | 5cf7629f90a8573d57281cd493ba3d467a6f1152 /sys/i386 | |
| parent | 518ce17afab824c438d07ddbb58fa5a8e787bdae (diff) | |
| download | FreeBSD-src-ef98f25c38c8c0ae820e7bd3576f5ec67421729b.zip FreeBSD-src-ef98f25c38c8c0ae820e7bd3576f5ec67421729b.tar.gz | |
In the unlikely event that pmap_ts_referenced() demoted five superpage
mappings to the same underlying physical page, the calling thread would be
left forever pinned to the same processor.
MFC after: 3 days
Diffstat (limited to 'sys/i386')
| -rw-r--r-- | sys/i386/i386/pmap.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index 1316eb8..68c5edc 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -4540,7 +4540,7 @@ pmap_ts_referenced(vm_page_t m) rtval++; if (rtval > 4) { PMAP_UNLOCK(pmap); - return (rtval); + goto out; } } } @@ -4569,6 +4569,7 @@ pmap_ts_referenced(vm_page_t m) PMAP_UNLOCK(pmap); } while ((pv = pvn) != NULL && pv != pvf); } +out: sched_unpin(); return (rtval); } |
