linux-kernel - [PATCH] MIPS: export has_transparent

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Date:   Fri, 23 Oct 2020 12:44:40 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-mips@...r.kernel.org,
        Dan Williams <dan.j.williams@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>, linux-nvdimm@...ts.01.org,
        Hugh Dickins <hughd@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] MIPS: export has_transparent_hugepage() for modules

MIPS should export its local version of "has_transparent_hugepage"
so that loadable modules (dax) can use it.

Fixes this build error:
ERROR: modpost: "has_transparent_hugepage" [drivers/dax/dax.ko] undefined!

Fixes: fd8cfd300019 ("arch: fix has_transparent_hugepage()")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: linux-mips@...r.kernel.org
Cc: Dan Williams <dan.j.williams@...el.com>
Cc: Vishal Verma <vishal.l.verma@...el.com>
Cc: Dave Jiang <dave.jiang@...el.com>
Cc: linux-nvdimm@...ts.01.org
Cc: Hugh Dickins <hughd@...gle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 arch/mips/mm/tlb-r4k.c |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20201022.orig/arch/mips/mm/tlb-r4k.c
+++ linux-next-20201022/arch/mips/mm/tlb-r4k.c
@@ -438,6 +438,7 @@ int has_transparent_hugepage(void)
 	}
 	return mask == PM_HUGE_MASK;
 }
+EXPORT_SYMBOL(has_transparent_hugepage);
 
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE  */