diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2011-11-23 07:11:32 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2011-11-23 07:11:32 +0000 |
| commit | efa9c5cc8939f43583c25717e6aaae8c98cf17e1 (patch) | |
| tree | 8ae1aa206ddb90db3fdb8cd54e2c5bfc96a1780e /sys/kern/subr_hibernate.c | |
| parent | de3e0444eda9d3bb11eb4d3b900b0bd7485956c5 (diff) | |
clamp uvm_page_rle() to 255 pages at a time
ok mlarkin
Diffstat (limited to 'sys/kern/subr_hibernate.c')
| -rw-r--r-- | sys/kern/subr_hibernate.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sys/kern/subr_hibernate.c b/sys/kern/subr_hibernate.c index d1d7c41fe28..cb4d540d290 100644 --- a/sys/kern/subr_hibernate.c +++ b/sys/kern/subr_hibernate.c @@ -1,4 +1,4 @@ -/* $OpenBSD: subr_hibernate.c,v 1.29 2011/11/22 07:59:06 mlarkin Exp $ */ +/* $OpenBSD: subr_hibernate.c,v 1.30 2011/11/23 07:11:31 deraadt Exp $ */ /* * Copyright (c) 2011 Ariane van der Steldt <ariane@stack.nl> @@ -565,7 +565,7 @@ uvm_pmr_free_piglet(vaddr_t va, vsize_t sz) * Physmem RLE compression support. * * Given a physical page address, it will return the number of pages - * starting at the address, that are free. + * starting at the address, that are free. Clamps to a max of 255 pages. * Returns 0 if the page at addr is not free. */ psize_t @@ -590,8 +590,9 @@ uvm_page_rle(paddr_t addr) * therefore pg->fpgsz cannot be used. */ for (pg_end = pg; pg_end <= vmp->lastpg && - (pg_end->pg_flags & PQ_FREE) == PQ_FREE; pg_end++); - return pg_end - pg; + (pg_end->pg_flags & PQ_FREE) == PQ_FREE; pg_end++) + ; + return max(pg_end - pg, 255); } /* |