[PATCH 1/2] mm, fault-injection: declare should_fail_alloc_page()

From: Vlastimil Babka <vbabka@suse.cz>
To: Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org, patches@lists.linux.dev,
	Mel Gorman <mgorman@techsingularity.net>,
	Matthew Wilcox <willy@infradead.org>,
	David Hildenbrand <david@redhat.com>,
	Vlastimil Babka <vbabka@suse.cz>
Subject: [PATCH 1/2] mm, fault-injection: declare should_fail_alloc_page()
Date: Mon, 14 Mar 2022 17:57:23 +0100	[thread overview]
Message-ID: <20220314165724.16071-1-vbabka@suse.cz> (raw)

The mm/ directory can almost fully be built with W=1, which would help
in local development. One remaining issue is missing prototype for
should_fail_alloc_page(). Thus add it next to the should_failslab()
prototype.

Note the previous attempt by commit f7173090033c ("mm/page_alloc: make
should_fail_alloc_page() static") had to be reverted by commit
54aa386661fe as it caused an unresolved symbol error with
CONFIG_DEBUG_INFO_BTF=y

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---
 include/linux/fault-inject.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/fault-inject.h b/include/linux/fault-inject.h
index e525f6957c49..2d04f6448cde 100644
--- a/include/linux/fault-inject.h
+++ b/include/linux/fault-inject.h
@@ -64,6 +64,8 @@ static inline struct dentry *fault_create_debugfs_attr(const char *name,
 
 struct kmem_cache;
 
+bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order);
+
 int should_failslab(struct kmem_cache *s, gfp_t gfpflags);
 #ifdef CONFIG_FAILSLAB
 extern bool __should_failslab(struct kmem_cache *s, gfp_t gfpflags);
-- 
2.35.1

