From 4e6586002df89aa5ef4d86d464a8e91a1ce552fa Mon Sep 17 00:00:00 2001
From: Poul-Henning Kamp <phk@FreeBSD.org>
Date: Tue, 5 Aug 2003 06:51:26 +0000
Subject: [PATCH] Use sparse struct initializations for struct pagerops.

This makes grepping for which pagers implement which methods easier.
---
 sys/vm/default_pager.c | 12 +++++-------
 sys/vm/device_pager.c  | 13 ++++++-------
 sys/vm/phys_pager.c    | 13 ++++++-------
 sys/vm/vm_pager.c      | 30 +++++-------------------------
 sys/vm/vnode_pager.c   | 13 ++++++-------
 5 files changed, 28 insertions(+), 53 deletions(-)

diff --git a/sys/vm/default_pager.c b/sys/vm/default_pager.c
index b3e6e4436563..113322a971a8 100644
--- a/sys/vm/default_pager.c
+++ b/sys/vm/default_pager.c
@@ -64,13 +64,11 @@ static boolean_t default_pager_haspage(vm_object_t, vm_pindex_t, int *,
  * pagerops for OBJT_DEFAULT - "default pager".
  */
 struct pagerops defaultpagerops = {
-	NULL,
-	default_pager_alloc,
-	default_pager_dealloc,
-	default_pager_getpages,
-	default_pager_putpages,
-	default_pager_haspage,
-	NULL
+	.pgo_alloc =	default_pager_alloc,
+	.pgo_dealloc =	default_pager_dealloc,
+	.pgo_getpages =	default_pager_getpages,
+	.pgo_putpages =	default_pager_putpages,
+	.pgo_haspage =	default_pager_haspage,
 };
 
 /*
diff --git a/sys/vm/device_pager.c b/sys/vm/device_pager.c
index 65b268a48f24..85eeed03c165 100644
--- a/sys/vm/device_pager.c
+++ b/sys/vm/device_pager.c
@@ -80,13 +80,12 @@ static vm_page_t dev_pager_getfake(vm_paddr_t);
 static void dev_pager_putfake(vm_page_t);
 
 struct pagerops devicepagerops = {
-	dev_pager_init,
-	dev_pager_alloc,
-	dev_pager_dealloc,
-	dev_pager_getpages,
-	dev_pager_putpages,
-	dev_pager_haspage,
-	NULL
+	.pgo_init =	dev_pager_init,
+	.pgo_alloc =	dev_pager_alloc,
+	.pgo_dealloc =	dev_pager_dealloc,
+	.pgo_getpages =	dev_pager_getpages,
+	.pgo_putpages =	dev_pager_putpages,
+	.pgo_haspage =	dev_pager_haspage,
 };
 
 static void
diff --git a/sys/vm/phys_pager.c b/sys/vm/phys_pager.c
index 214315dcc557..6a2e19144202 100644
--- a/sys/vm/phys_pager.c
+++ b/sys/vm/phys_pager.c
@@ -201,11 +201,10 @@ phys_pager_haspage(vm_object_t object, vm_pindex_t pindex, int *before,
 }
 
 struct pagerops physpagerops = {
-	phys_pager_init,
-	phys_pager_alloc,
-	phys_pager_dealloc,
-	phys_pager_getpages,
-	phys_pager_putpages,
-	phys_pager_haspage,
-	NULL
+	.pgo_init =	phys_pager_init,
+	.pgo_alloc =	phys_pager_alloc,
+	.pgo_dealloc = 	phys_pager_dealloc,
+	.pgo_getpages =	phys_pager_getpages,
+	.pgo_putpages =	phys_pager_putpages,
+	.pgo_haspage =	phys_pager_haspage,
 };
diff --git a/sys/vm/vm_pager.c b/sys/vm/vm_pager.c
index 9f089b71df5c..e5d6cc771cf6 100644
--- a/sys/vm/vm_pager.c
+++ b/sys/vm/vm_pager.c
@@ -154,13 +154,11 @@ dead_pager_dealloc(object)
 }
 
 static struct pagerops deadpagerops = {
-	NULL,
-	dead_pager_alloc,
-	dead_pager_dealloc,
-	dead_pager_getpages,
-	dead_pager_putpages,
-	dead_pager_haspage,
-	NULL
+	.pgo_alloc = 	dead_pager_alloc,
+	.pgo_dealloc =	dead_pager_dealloc,
+	.pgo_getpages =	dead_pager_getpages,
+	.pgo_putpages =	dead_pager_putpages,
+	.pgo_haspage =	dead_pager_haspage,
 };
 
 struct pagerops *pagertab[] = {
@@ -263,24 +261,6 @@ vm_pager_deallocate(object)
 	(*pagertab[object->type]->pgo_dealloc) (object);
 }
 
-/*
- *      vm_pager_strategy:
- *
- *      called with no specific spl
- *      Execute strategy routine directly to pager.
- */
-void
-vm_pager_strategy(vm_object_t object, struct bio *bp)
-{
-	if (pagertab[object->type]->pgo_strategy) {
-		(*pagertab[object->type]->pgo_strategy)(object, bp);
-	} else {
-		bp->bio_flags |= BIO_ERROR;
-		bp->bio_error = ENXIO;
-		biodone(bp);
-	}
-}
-
 /*
  * vm_pager_get_pages() - inline, see vm/vm_pager.h
  * vm_pager_put_pages() - inline, see vm/vm_pager.h
diff --git a/sys/vm/vnode_pager.c b/sys/vm/vnode_pager.c
index 69f4b421a6bc..58f4518107d4 100644
--- a/sys/vm/vnode_pager.c
+++ b/sys/vm/vnode_pager.c
@@ -83,13 +83,12 @@ static void vnode_pager_putpages(vm_object_t, vm_page_t *, int, boolean_t, int *
 static boolean_t vnode_pager_haspage(vm_object_t, vm_pindex_t, int *, int *);
 
 struct pagerops vnodepagerops = {
-	vnode_pager_init,
-	vnode_pager_alloc,
-	vnode_pager_dealloc,
-	vnode_pager_getpages,
-	vnode_pager_putpages,
-	vnode_pager_haspage,
-	NULL
+	.pgo_init =	vnode_pager_init,
+	.pgo_alloc =	vnode_pager_alloc,
+	.pgo_dealloc =	vnode_pager_dealloc,
+	.pgo_getpages =	vnode_pager_getpages,
+	.pgo_putpages =	vnode_pager_putpages,
+	.pgo_haspage =	vnode_pager_haspage,
 };
 
 int vnode_pbuf_freecnt;