Messages in this thread | | | Date | Sat, 30 Jul 2005 15:20:15 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH] swsusp: simpler calculation of number of pages in PBE list |
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On Pá 29-07-05 21:46:40, Michal Schmidt wrote: > The function calc_nr uses an iterative algorithm to calculate the number > of pages needed for the image and the pagedir. Exactly the same result > can be obtained with a one-line expression. > > Signed-off-by: Michal Schmidt <xschmi00@stud.feec.vutbr.cz>
Thanks, applied.
> diff -Nurp -X dontdiff.new linux-mm/kernel/power/swsusp.c linux-mm.mich/kernel/power/swsusp.c > --- linux-mm/kernel/power/swsusp.c 2005-07-28 13:57:53.000000000 +0200 > +++ linux-mm.mich/kernel/power/swsusp.c 2005-07-29 21:01:46.000000000 +0200 > @@ -737,18 +737,7 @@ static void copy_data_pages(void) > > static int calc_nr(int nr_copy) > { > - int extra = 0; > - int mod = !!(nr_copy % PBES_PER_PAGE); > - int diff = (nr_copy / PBES_PER_PAGE) + mod; > - > - do { > - extra += diff; > - nr_copy += diff; > - mod = !!(nr_copy % PBES_PER_PAGE); > - diff = (nr_copy / PBES_PER_PAGE) + mod - extra; > - } while (diff > 0); > - > - return nr_copy; > + return nr_copy + (nr_copy+PBES_PER_PAGE-2)/(PBES_PER_PAGE-1); > } > > /**
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