openwrt/target/linux/brcm2708/patches-4.14/950-0034-mm-Remove-the-PFN-busy-warning.patch

From 311430df64b6d7992d1fbde8dab4995bcb082a9b Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Thu, 18 Dec 2014 16:07:15 -0800
Subject: [PATCH 034/454] mm: Remove the PFN busy warning

See commit dae803e165a11bc88ca8dbc07a11077caf97bbcb -- the warning is
expected sometimes when using CMA.  However, that commit still spams
my kernel log with these warnings.

Signed-off-by: Eric Anholt <eric@anholt.net>
---
 mm/page_alloc.c | 2 --
 1 file changed, 2 deletions(-)

--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -7620,8 +7620,6 @@ int alloc_contig_range(unsigned long sta
 
 	/* Make sure the range is really isolated. */
 	if (test_pages_isolated(outer_start, end, false)) {
-		pr_info_ratelimited("%s: [%lx, %lx) PFNs busy\n",
-			__func__, outer_start, end);
 		ret = -EBUSY;
 		goto done;
 	}