Please pull from 'for-linus' branch of
git://git390.osdl.marist.edu/pub/scm/linux-2.6.git for-linus
to receive the following updates:
drivers/s390/cio/device_status.c | 8 ++++++++
mm/rmap.c | 4 ++--
2 files changed, 10 insertions(+), 2 deletions(-)
Cornelia Huck (1):
[S390] cio: Fix handling of interrupt for csch().
Martin Schwidefsky (1):
[S390] page_mkclean data corruption.
diff --git a/drivers/s390/cio/device_status.c b/drivers/s390/cio/device_status.c
index 25d99bd..aa96e67 100644
--- a/drivers/s390/cio/device_status.c
+++ b/drivers/s390/cio/device_status.c
@@ -221,6 +221,14 @@ ccw_device_accumulate_irb(struct ccw_device *cdev, struct
irb *irb)
cdev_irb = &cdev->private->irb;
+ /*
+ * If the clear function had been performed, all formerly pending
+ * status at the subchannel has been cleared and we must not pass
+ * intermediate accumulated status to the device driver.
+ */
+ if (irb->scsw.fctl & SCSW_FCTL_CLEAR_FUNC)
+ memset(&cdev->private->irb, 0, sizeof(struct irb));
+
/* Copy bits which are valid only for the start function. */
if (irb->scsw.fctl & SCSW_FCTL_START_FUNC) {
/* Copy key. */
diff --git a/mm/rmap.c b/mm/rmap.c
index 22ed3f7..b82146e 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -498,9 +498,9 @@ int page_mkclean(struct page *page)
struct address_space *mapping = page_mapping(page);
if (mapping)
ret = page_mkclean_file(mapping, page);
+ if (page_test_and_clear_dirty(page))
+ ret = 1;
}
- if (page_test_and_clear_dirty(page))
- ret = 1;
return ret;
}
-
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