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From:   "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To:     Andrew Morton <akpm@linux-foundation.org>, x86@kernel.org,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>,
        Peter Zijlstra <peterz@infradead.org>,
        Andy Lutomirski <luto@amacapital.net>,
        David Howells <dhowells@redhat.com>
Cc:     Kees Cook <keescook@chromium.org>,
        Dave Hansen <dave.hansen@intel.com>,
        Kai Huang <kai.huang@linux.intel.com>,
        Jacob Pan <jacob.jun.pan@linux.intel.com>,
        Alison Schofield <alison.schofield@intel.com>,
        linux-mm@kvack.org, kvm@vger.kernel.org, keyrings@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCH, RFC 20/62] mm/page_ext: Export lookup_page_ext() symbol
Date:   Wed,  8 May 2019 17:43:40 +0300
Message-Id: <20190508144422.13171-21-kirill.shutemov@linux.intel.com>
In-Reply-To: <20190508144422.13171-1-kirill.shutemov@linux.intel.com>
References: <20190508144422.13171-1-kirill.shutemov@linux.intel.com>
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page_keyid() is inline funcation that uses lookup_page_ext(). KVM is
going to use page_keyid() and since KVM can be built as a module
lookup_page_ext() has to be exported.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
 mm/page_ext.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/page_ext.c b/mm/page_ext.c
index 1af8b82087f2..91e4e87f6e41 100644
--- a/mm/page_ext.c
+++ b/mm/page_ext.c
@@ -142,6 +142,7 @@ struct page_ext *lookup_page_ext(const struct page *page)
 					MAX_ORDER_NR_PAGES);
 	return get_entry(base, index);
 }
+EXPORT_SYMBOL_GPL(lookup_page_ext);
 
 static int __init alloc_node_page_ext(int nid)
 {
@@ -212,6 +213,7 @@ struct page_ext *lookup_page_ext(const struct page *page)
 		return NULL;
 	return get_entry(section->page_ext, pfn);
 }
+EXPORT_SYMBOL_GPL(lookup_page_ext);
 
 static void *__meminit alloc_page_ext(size_t size, int nid)
 {
-- 
2.20.1