[Suspend2][ 18/19] [Suspend2] Read pageset2.

[Nigel Cunningham <nigel@suspend2.net>]

(Re)read pageset2 data when cancelling a suspend after the atomic copy,
or when resuming.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

 kernel/power/io.c |   24 ++++++++++++++++++++++++
 1 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/kernel/power/io.c b/kernel/power/io.c
index cd99bd8..6a8badf 100644
--- a/kernel/power/io.c
+++ b/kernel/power/io.c
@@ -971,3 +971,27 @@ out:
 	return output_buffer;
 }
 
+/* read_pageset2()
+ *
+ * Description:	Read in part or all of pageset2 of an image, depending upon
+ * 		whether we are suspending and have only overwritten a portion
+ * 		with pageset1 pages, or are resuming and need to read them 
+ * 		all.
+ * Arguments:	Int. Boolean. Read only pages which would have been
+ * 		overwritten by pageset1?
+ * Returns:	Int. Zero if no error, otherwise the error value.
+ */
+int read_pageset2(int overwrittenpagesonly)
+{
+	int result = 0;
+
+	if (!pagedir2.pageset_size)
+		return 0;
+
+	result = read_pageset(&pagedir2, 2, overwrittenpagesonly);
+
+	suspend_update_status(100, 100, NULL);
+	suspend_cond_pause(1, "Pagedir 2 read.");
+
+	return result;
+}

--
Nigel Cunningham		nigel at suspend2 dot net