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    SubjectRe: [PATCH] Swap delay accounting, include lock_page() delays
    Date
    On Wednesday 31 October 2007 18:52, Balbir Singh wrote:
    > Reported-by: Nick Piggin <nickpiggin@yahoo.com.au>
    >
    > The delay incurred in lock_page() should also be accounted in swap delay
    > accounting
    >
    > Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>

    Ah right, I forgot to resend this one, sorry. Thanks for remembering.


    > ---
    >
    > mm/memory.c | 2 +-
    > 1 file changed, 1 insertion(+), 1 deletion(-)
    >
    > diff -puN mm/swapfile.c~fix-delay-accounting-swap-accounting mm/swapfile.c
    > diff -puN mm/memory.c~fix-delay-accounting-swap-accounting mm/memory.c
    > ---
    > linux-2.6-latest/mm/memory.c~fix-delay-accounting-swap-accounting 2007-10-3
    >1 12:58:05.000000000 +0530 +++
    > linux-2.6-latest-balbir/mm/memory.c 2007-10-31 13:02:50.000000000 +0530 @@
    > -2084,9 +2084,9 @@ static int do_swap_page(struct mm_struct
    > count_vm_event(PGMAJFAULT);
    > }
    >
    > - delayacct_clear_flag(DELAYACCT_PF_SWAPIN);
    > mark_page_accessed(page);
    > lock_page(page);
    > + delayacct_clear_flag(DELAYACCT_PF_SWAPIN);
    >
    > /*
    > * Back out if somebody else already faulted in this pte.
    > _
    -
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