Date: Thu, 29 Apr 2010 09:57:25 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r207364 - head/sys/vm Message-ID: <201004290957.o3T9vPBR014000@svn.freebsd.org>
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Author: kib Date: Thu Apr 29 09:57:25 2010 New Revision: 207364 URL: http://svn.freebsd.org/changeset/base/207364 Log: 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 Modified: head/sys/vm/swap_pager.c Modified: head/sys/vm/swap_pager.c ============================================================================== --- head/sys/vm/swap_pager.c Thu Apr 29 09:55:51 2010 (r207363) +++ head/sys/vm/swap_pager.c Thu Apr 29 09:57:25 2010 (r207364) @@ -378,6 +378,14 @@ static void swp_pager_meta_free(vm_objec 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_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); /*
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