Open (at resume time) a bdev for the swapwriter to read from.
Signed-off-by: Nigel Cunningham <[email protected]>
kernel/power/suspend_swap.c | 37 +++++++++++++++++++++++++++++++++++++
1 files changed, 37 insertions(+), 0 deletions(-)
diff --git a/kernel/power/suspend_swap.c b/kernel/power/suspend_swap.c
index 6f87a4a..212555f 100644
--- a/kernel/power/suspend_swap.c
+++ b/kernel/power/suspend_swap.c
@@ -114,3 +114,40 @@ static void close_bdevs(void)
resume_block_device = header_block_device = NULL;
}
+static struct block_device *open_bdev(int index, dev_t device)
+{
+ struct bdev_opened *this;
+ struct block_device *bdev;
+
+ if (bdev_info_list[index] && (bdev_info_list[index]->device == device)){
+ bdev = bdev_info_list[index]->bdev;
+ return bdev;
+ }
+
+ if (bdev_info_list[index] && bdev_info_list[index]->device != device)
+ close_bdev(index);
+
+ bdev = open_by_devnum(device, FMODE_READ);
+
+ if (IS_ERR(bdev) || !bdev) {
+ suspend_early_boot_message(1,SUSPEND_CONTINUE_REQ,
+ "Failed to get access to block device "
+ "%d.\n You could be "
+ "booting with a 2.6 kernel when you "
+ "suspended a 2.4 kernel.", bdev);
+ return ERR_PTR(-EINVAL);
+ }
+
+ this = kmalloc(sizeof(struct bdev_opened), GFP_KERNEL);
+ BUG_ON(!this);
+
+ bdev_info_list[index] = this;
+ this->device = device;
+ this->bdev = bdev;
+
+ if (index < MAX_SWAPFILES)
+ devinfo[index].bdev = bdev;
+
+ return bdev;
+}
+
--
Nigel Cunningham nigel at suspend2 dot net
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
