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.
Signed-off-by: Michal Nazarewicz <mina86@xxxxxxxxxx>
---
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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