Page MenuHomeFreeBSD
Files F136935960

D20545.id.diff
No OneTemporary
Actions

D20545.id.diff
View Options

Index: head/sys/vm/swap_pager.c
===================================================================
--- head/sys/vm/swap_pager.c
+++ head/sys/vm/swap_pager.c
@@ -1650,6 +1650,31 @@
return (nswapdev);
}
+static void
+swp_pager_force_dirty(vm_page_t m)
+{
+
+ vm_page_dirty(m);
+#ifdef INVARIANTS
+ vm_page_lock(m);
+ if (!vm_page_wired(m) && m->queue == PQ_NONE)
+ panic("page %p is neither wired nor queued", m);
+ vm_page_unlock(m);
+#endif
+ vm_page_xunbusy(m);
+}
+
+static void
+swp_pager_force_launder(vm_page_t m)
+{
+
+ vm_page_dirty(m);
+ vm_page_lock(m);
+ vm_page_launder(m);
+ vm_page_unlock(m);
+ vm_page_xunbusy(m);
+}
+
/*
* SWP_PAGER_FORCE_PAGEIN() - force a swap block to be paged in
*
@@ -1667,7 +1692,7 @@
* XXX - The code to page the whole block in doesn't work, so we
* revert to the one-by-one behavior for now. Sigh.
*/
-static inline void
+static void
swp_pager_force_pagein(vm_object_t object, vm_pindex_t pindex)
{
vm_page_t m;
@@ -1676,14 +1701,7 @@
m = vm_page_grab(object, pindex, VM_ALLOC_NORMAL);
if (m->valid == VM_PAGE_BITS_ALL) {
vm_object_pip_wakeup(object);
- vm_page_dirty(m);
-#ifdef INVARIANTS
- vm_page_lock(m);
- if (!vm_page_wired(m) && m->queue == PQ_NONE)
- panic("page %p is neither wired nor queued", m);
- vm_page_unlock(m);
-#endif
- vm_page_xunbusy(m);
+ swp_pager_force_dirty(m);
vm_pager_page_unswapped(m);
return;
}
@@ -1691,15 +1709,36 @@
if (swap_pager_getpages(object, &m, 1, NULL, NULL) != VM_PAGER_OK)
panic("swap_pager_force_pagein: read from swap failed");/*XXX*/
vm_object_pip_wakeup(object);
- vm_page_dirty(m);
- vm_page_lock(m);
- vm_page_launder(m);
- vm_page_unlock(m);
- vm_page_xunbusy(m);
+ swp_pager_force_launder(m);
vm_pager_page_unswapped(m);
}
/*
+ * swap_pager_swapoff_object:
+ *
+ * Page in all of the pages that have been paged out for an object
+ * from a given swap device.
+ */
+static void
+swap_pager_swapoff_object(struct swdevt *sp, vm_object_t object)
+{
+ struct swblk *sb;
+ vm_pindex_t pi;
+ int i;
+
+ for (pi = 0; (sb = SWAP_PCTRIE_LOOKUP_GE(
+ &object->un_pager.swp.swp_blks, pi)) != NULL; ) {
+ pi = sb->p + SWAP_META_PAGES;
+ for (i = 0; i < SWAP_META_PAGES; i++) {
+ if (sb->d[i] == SWAPBLK_NONE)
+ continue;
+ if (swp_pager_isondev(sb->d[i], sp))
+ swp_pager_force_pagein(object, sb->p + i);
+ }
+ }
+}
+
+/*
* swap_pager_swapoff:
*
* Page in all of the pages that have been paged out to the
@@ -1712,10 +1751,8 @@
static void
swap_pager_swapoff(struct swdevt *sp)
{
- struct swblk *sb;
vm_object_t object;
- vm_pindex_t pi;
- int i, retries;
+ int retries;
sx_assert(&swdev_syscall_lock, SA_XLOCKED);
@@ -1745,17 +1782,7 @@
if (object->type != OBJT_SWAP)
goto next_obj;
- for (pi = 0; (sb = SWAP_PCTRIE_LOOKUP_GE(
- &object->un_pager.swp.swp_blks, pi)) != NULL; ) {
- pi = sb->p + SWAP_META_PAGES;
- for (i = 0; i < SWAP_META_PAGES; i++) {
- if (sb->d[i] == SWAPBLK_NONE)
- continue;
- if (swp_pager_isondev(sb->d[i], sp))
- swp_pager_force_pagein(object,
- sb->p + i);
- }
- }
+ swap_pager_swapoff_object(sp, object);
next_obj:
VM_OBJECT_WUNLOCK(object);
mtx_lock(&vm_object_list_mtx);

File Metadata

Mime Type
text/plain
Expires
Fri, Nov 21, 6:03 PM (3 h, 58 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
25784075
Default Alt Text
D20545.id.diff (3 KB)

Event Timeline