diff options
| author | alc <alc@FreeBSD.org> | 2006-07-17 03:10:17 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2006-07-17 03:10:17 +0000 |
| commit | 45cb17842617c19d39fe2baf45757f37d2698f9c (patch) | |
| tree | 00840745b38dcee1d32627da65915d8af9f5ebd1 /sys/amd64 | |
| parent | f457417c4c3c641d7c6e1fa68923519c02a7078e (diff) | |
| download | FreeBSD-src-45cb17842617c19d39fe2baf45757f37d2698f9c.zip FreeBSD-src-45cb17842617c19d39fe2baf45757f37d2698f9c.tar.gz | |
Now that free_pv_entry() accesses the pmap, call free_pv_entry() in
pmap_remove_all() before rather than after the pmap is unlocked. At
present, the page queues lock provides sufficient sychronization. In the
future, the page queues lock may not always be held when free_pv_entry() is
called.
Diffstat (limited to 'sys/amd64')
| -rw-r--r-- | sys/amd64/amd64/pmap.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index c5368db..ed96ba7 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -1627,6 +1627,7 @@ free_pv_entry(pmap_t pmap, pv_entry_t pv) int idx, field, bit; mtx_assert(&vm_page_queue_mtx, MA_OWNED); + PMAP_LOCK_ASSERT(pmap, MA_OWNED); PV_STAT(pv_entry_frees++); PV_STAT(pv_entry_spare++); pv_entry_count--; @@ -2015,8 +2016,8 @@ pmap_remove_all(vm_page_t m) TAILQ_REMOVE(&m->md.pv_list, pv, pv_list); m->md.pv_list_count--; pmap_unuse_pt(pmap, pv->pv_va, ptepde); - PMAP_UNLOCK(pmap); free_pv_entry(pmap, pv); + PMAP_UNLOCK(pmap); } vm_page_flag_clear(m, PG_WRITEABLE); } |
