The patch titled
Page Migration: Make do_swap_page redo the fault
has been removed from the -mm tree. Its filename is
page-migration-make-do_swap_page-redo-the-fault.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: Page Migration: Make do_swap_page redo the fault
From: Christoph Lameter <clameter@xxxxxxx>
It is better to redo the complete fault if do_swap_page() finds that the
page is not in PageSwapCache() because the page migration code may have
replaced the swap pte already with a pte pointing to valid memory.
do_swap_page() may interpret an invalid swap entry without this patch
because we do not reload the pte if we are looping back. The page
migration code may already have reused the swap entry referenced by our
local swp_entry.
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Cc: Hugh Dickins <hugh@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/memory.c | 7 -------
1 file changed, 7 deletions(-)
diff -puN mm/memory.c~page-migration-make-do_swap_page-redo-the-fault mm/memory.c
--- a/mm/memory.c~page-migration-make-do_swap_page-redo-the-fault
+++ a/mm/memory.c
@@ -1879,7 +1879,6 @@ static int do_swap_page(struct mm_struct
goto out;
entry = pte_to_swp_entry(orig_pte);
-again:
page = lookup_swap_cache(entry);
if (!page) {
swapin_readahead(entry, address, vma);
@@ -1903,12 +1902,6 @@ again:
mark_page_accessed(page);
lock_page(page);
- if (!PageSwapCache(page)) {
- /* Page migration has occured */
- unlock_page(page);
- page_cache_release(page);
- goto again;
- }
/*
* Back out if somebody else already faulted in this pte.
_
Patches currently in -mm which might be from clameter@xxxxxxx are
origin.patch
mm-remove-vm_locked-before-remap_pfn_range-and-drop-vm_shm.patch
page-migration-support-a-vma-migration-function.patch
allow-migration-of-mlocked-pages.patch
zoned-vm-counters-create-vmstatc-h-from-page_allocc-h.patch
zoned-vm-counters-basic-zvc-zoned-vm-counter-implementation.patch
zoned-vm-counters-basic-zvc-zoned-vm-counter-implementation-tidy.patch
zoned-vm-counters-convert-nr_mapped-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_pagecache-to-per-zone-counter.patch
zoned-vm-counters-remove-nr_file_mapped-from-scan-control-structure.patch
zoned-vm-counters-remove-nr_file_mapped-from-scan-control-structure-fix.patch
zoned-vm-counters-split-nr_anon_pages-off-from-nr_file_mapped.patch
zoned-vm-counters-zone_reclaim-remove-proc-sys-vm-zone_reclaim_interval.patch
zoned-vm-counters-conversion-of-nr_slab-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_pagetables-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_dirty-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_writeback-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_bounce-to-per-zone-counter.patch
zoned-vm-counters-remove-useless-struct-wbs.patch
cpuset-remove-extra-cpuset_zone_allowed-check-in-__alloc_pages.patch
corrections-to-memory-barrier-doc.patch
-
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