[PATCH 04/22] Hibernation: Add mass swap allocation routine

[Nigel Cunningham <nigel@tuxonice.net>]

Add a routine to allocate swap from a device en masse. This is only
for use by the in-kernel implementation, not uswsusp.

Signed-off-by: Nigel Cunningham <nigel@tuxonice.net>
---
 kernel/power/swap.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 587f851..cebf91c 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -188,6 +188,19 @@ sector_t alloc_swapdev_block(int swap)
 	return 0;
 }
 
+int alloc_swapdev_blocks(int needed)
+{
+	int i;
+
+	for (i = 0; i < needed; i++) {
+		sector_t res = alloc_swapdev_block(root_swap);
+		if (!res)
+			break;
+	}
+
+	return i;
+}
+
 /**
  *	free_all_swap_pages - free swap pages allocated for saving image data.
  *	It also frees the extents used to register which swap entries had been
-- 
1.7.0.4