Messages in this thread Patch in this message | | | From | Nigel Cunningham <> | Subject | [Suspend2][ 12/32] [Suspend2] Prepare & cleanup readahead pages. | Date | Tue, 27 Jun 2006 08:37:49 +1000 |
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Allocate and cleanup pages used for readahead.
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
kernel/power/suspend_block_io.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/kernel/power/suspend_block_io.c b/kernel/power/suspend_block_io.c index f14939e..a1fcacb 100644 --- a/kernel/power/suspend_block_io.c +++ b/kernel/power/suspend_block_io.c @@ -414,3 +414,25 @@ static int suspend_readahead_ready(int r return test_bit(bit, &suspend_readahead_flags[index]); } +/* suspend_readahead_prepare + * Set up for doing readahead on an image */ +static int suspend_prepare_readahead(int index) +{ + unsigned long new_page = get_zeroed_page(GFP_ATOMIC); + + if(!new_page) + return -ENOMEM; + + suspend_readahead_pages[index] = virt_to_page(new_page); + return 0; +} + +/* suspend_readahead_cleanup + * Clean up structures used for readahead */ +static void suspend_cleanup_readahead(int page) +{ + __free_page(suspend_readahead_pages[page]); + suspend_readahead_pages[page] = 0; + return; +} + -- 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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