Messages in this thread Patch in this message | | | From | Nigel Cunningham <> | Subject | [Suspend2][ 10/28] [Suspend2] Allocate swapwriter header space. | Date | Tue, 27 Jun 2006 08:41:39 +1000 |
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Allocate space in the allocated storage for the header of the image.
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
kernel/power/suspend_swap.c | 31 +++++++++++++++++++++++++++++++ 1 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/kernel/power/suspend_swap.c b/kernel/power/suspend_swap.c index 7f16bea..8e4221d 100644 --- a/kernel/power/suspend_swap.c +++ b/kernel/power/suspend_swap.c @@ -329,3 +329,34 @@ static int prepare_signature(dev_t bdev, return 0; } +static int swapwriter_allocate_storage(int space_requested); + +static int swapwriter_allocate_header_space(int space_requested) +{ + int i; + + if (!swapextents.size) + swapwriter_allocate_storage(space_requested); + + suspend_extent_state_goto_start(&suspend_writer_posn); + suspend_bio_ops.forward_one_page(); /* To first page */ + + for (i = 0; i < space_requested; i++) { + if (suspend_bio_ops.forward_one_page()) { + printk("Out of space while seeking to allocate " + "header pages,\n"); + header_pages_allocated = i; + return -ENOSPC; + } + + } + + header_pages_allocated = space_requested; + + /* The end of header pages will be the start of pageset 2; + * we are now sitting on the first pageset2 page. */ + suspend_extent_state_save(&suspend_writer_posn, + &suspend_writer_posn_save[2]); + return 0; +} + -- 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 majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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