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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-04-04 10:11:16 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-04-04 10:11:16 -0700
commit8d00647f2cf0780497274a4b0ab0e66509579459 (patch)
treeb6f5171769896b69aa603d870f2b870c10703db9
parent927498217c104aab27b81c785ce3a489491a8964 (diff)
parent8c3ce5bece2e6e233c1d05b460883046d020fbf9 (diff)
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] cio: Fix handling of interrupt for csch(). [S390] page_mkclean data corruption.
-rw-r--r--drivers/s390/cio/device_status.c8
-rw-r--r--mm/rmap.c4
2 files changed, 10 insertions, 2 deletions
diff --git a/drivers/s390/cio/device_status.c b/drivers/s390/cio/device_status.c
index 25d99bd2808..aa96e675259 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 22ed3f71a67..b82146e6dfc 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;
}