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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2011-05-23 12:24:39 +0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-05-23 12:24:31 +0400
commit2d42552d1c1659b014851cf449ad2fe458509128 (patch)
treeb9ef22867ce52e23b5249a7ad38637eec40363b8 /include/linux/page-flags.h
parentc26001d4e9133fe45e47eee18cfd826219e71fb9 (diff)
downloadlinux-2d42552d1c1659b014851cf449ad2fe458509128.tar.xz
[S390] merge page_test_dirty and page_clear_dirty
The page_clear_dirty primitive always sets the default storage key which resets the access control bits and the fetch protection bit. That will surprise a KVM guest that sets non-zero access control bits or the fetch protection bit. Merge page_test_dirty and page_clear_dirty back to a single function and only clear the dirty bit from the storage key. In addition move the function page_test_and_clear_dirty and page_test_and_clear_young to page.h where they belong. This requires to change the parameter from a struct page * to a page frame number. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/linux/page-flags.h')
-rw-r--r--include/linux/page-flags.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 811183de1ef5..79a6700b7162 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -308,7 +308,7 @@ static inline void SetPageUptodate(struct page *page)
{
#ifdef CONFIG_S390
if (!test_and_set_bit(PG_uptodate, &page->flags))
- page_clear_dirty(page, 0);
+ page_set_storage_key(page_to_pfn(page), PAGE_DEFAULT_KEY, 0);
#else
/*
* Memory barrier must be issued before setting the PG_uptodate bit,