From: David Rientjes <rientjes@google.com>
Date: Thu, 23 Jan 2014 23:54:42 +0000 (-0800)
Subject: checkpatch: add warning of future __GFP_NOFAIL use
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7e4915e78992;p=linux-beck.git

checkpatch: add warning of future __GFP_NOFAIL use

gfp.h and page_alloc.c already specify that __GFP_NOFAIL is deprecated and
no new users should be added.

Add a warning to checkpatch to catch this.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 8efce590d4b6..9bb4a421a8d0 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -4113,6 +4113,12 @@ sub process {
 			     "$1 uses number as first arg, sizeof is generally wrong\n" . $herecurr);
 		}
 
+# check for GFP_NOWAIT use
+		if ($line =~ /\b__GFP_NOFAIL\b/) {
+			WARN("__GFP_NOFAIL",
+			     "Use of __GFP_NOFAIL is deprecated, no new users should be added\n" . $herecurr);
+		}
+
 # check for multiple semicolons
 		if ($line =~ /;\s*;\s*$/) {
 			if (WARN("ONE_SEMICOLON",