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| author | kib <kib@FreeBSD.org> | 2010-04-29 09:57:25 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2010-04-29 09:57:25 +0000 |
| commit | b1ef5079faea187e8c41cce0863d90d4d7527cb7 (patch) | |
| tree | b5071e72a9610a942a8960a4aa678c5269b0439b /sys/vm | |
| parent | a22b32df4a05865bd0f88df37448d94c80df9a3e (diff) | |
| download | FreeBSD-src-b1ef5079faea187e8c41cce0863d90d4d7527cb7.zip FreeBSD-src-b1ef5079faea187e8c41cce0863d90d4d7527cb7.tar.gz | |
In swap pager, do not free the non-requested pages from the run if they are
wired. Kstack pages are wired, this change prepares swap pager for handling
of long runs of kstack pages.
Noted and reviewed by: alc
Tested by: pho
MFC after: 2 weeks
Diffstat (limited to 'sys/vm')
| -rw-r--r-- | sys/vm/swap_pager.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sys/vm/swap_pager.c b/sys/vm/swap_pager.c index f1d89d5..f47719b 100644 --- a/sys/vm/swap_pager.c +++ b/sys/vm/swap_pager.c @@ -378,6 +378,14 @@ static void swp_pager_meta_free(vm_object_t, vm_pindex_t, daddr_t); static void swp_pager_meta_free_all(vm_object_t); static daddr_t swp_pager_meta_ctl(vm_object_t, vm_pindex_t, int); +static void +swp_pager_free_nrpage(vm_page_t m) +{ + + if (m->wire_count == 0) + vm_page_free(m); +} + /* * SWP_SIZECHECK() - update swap_pager_full indication * @@ -1131,9 +1139,9 @@ swap_pager_getpages(vm_object_t object, vm_page_t *m, int count, int reqpage) vm_page_lock_queues(); for (k = 0; k < i; ++k) - vm_page_free(m[k]); + swp_pager_free_nrpage(m[k]); for (k = j; k < count; ++k) - vm_page_free(m[k]); + swp_pager_free_nrpage(m[k]); vm_page_unlock_queues(); } @@ -1529,7 +1537,7 @@ swp_pager_async_iodone(struct buf *bp) */ m->valid = 0; if (i != bp->b_pager.pg_reqpage) - vm_page_free(m); + swp_pager_free_nrpage(m); else vm_page_flash(m); /* |
