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| author |   KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2007-10-16 01:25:43 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:42:59 -0700 |
| commit | 97ee052461446526e1de7236497e6f1b1ffedf8c (patch) | |
| tree | 7c91270577191ed32de22d8183695c1354d555c8 /mm/migrate.c | |
| parent | make swappiness safer to use (diff) | |
| download | linux-dev-97ee052461446526e1de7236497e6f1b1ffedf8c.tar.xz linux-dev-97ee052461446526e1de7236497e6f1b1ffedf8c.zip | |
flush cache before installing new page at migraton
In migration, a new page should be cache flushed before set_pte() in some
archs which have virtually-tagged cache.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 71c38b43c019..ea11ddb58275 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -171,6 +171,7 @@ static void remove_migration_pte(struct vm_area_struct *vma, pte = pte_mkold(mk_pte(new, vma->vm_page_prot)); if (is_write_migration_entry(entry)) pte = pte_mkwrite(pte); + flush_cache_page(vma, addr, pte_pfn(pte)); set_pte_at(mm, addr, ptep, pte); if (PageAnon(new)) |