Hello,
On Mon, Nov 03, 2014 at 05:57:53PM +0100, Michal Nazarewicz wrote:
> Having test_pages_isolated failure message as a warning confuses
> users into thinking that it is more serious than it really is. In
> reality, if called via CMA, allocation will be retried so a single
> test_pages_isolated failure does not prevent allocation from
> succeeding.
>
> Demote the warning message to an info message and reformat it such
> that the text “failed” does not appear and instead a less worrying
> “PFNS busy” is used.
What do you expect from this message? Please describe it so that we can
review below message helps your goal.
>
> Signed-off-by: Michal Nazarewicz <min...@mina86.com>
> ---
> mm/page_alloc.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 372e3f3..e2731eb 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -6431,13 +6431,12 @@ int alloc_contig_range(unsigned long start, unsigned
> long end,
>
> /* Make sure the range is really isolated. */
> if (test_pages_isolated(outer_start, end, false)) {
> - pr_warn("alloc_contig_range test_pages_isolated(%lx, %lx)
> failed\n",
> - outer_start, end);
> + pr_info("%s: [%lx, %lx) PFNs busy\n",
> + __func__, outer_start, end);
> ret = -EBUSY;
> goto done;
> }
>
> -
> /* Grab isolated pages from freelists. */
> outer_end = isolate_freepages_range(&cc, outer_start, end);
> if (!outer_end) {
> --
> 2.1.0.rc2.206.gedb03e5
>
> --
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--
Kind regards,
Minchan Kim
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