[4.19,41/91] MIPS: export has_transparent_hugepage() for modules

Commit Message

Greg Kroah-Hartman Nov. 23, 2020, 12:22 p.m. UTC

From: Randy Dunlap <[e-mail]>

[ Upstream commit 31b4d8e172f614adc53ddecb4b6b2f6411a49b84 ]

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 <[e-mail]>
Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Thomas Bogendoerfer <[e-mail]>
Cc: [e-mail]
Cc: Dan Williams <[e-mail]>
Cc: Vishal Verma <[e-mail]>
Cc: Dave Jiang <[e-mail]>
Cc: [e-mail]
Cc: Hugh Dickins <[e-mail]>
Cc: Andrew Morton <[e-mail]>
Signed-off-by: Thomas Bogendoerfer <[e-mail]>
Signed-off-by: Sasha Levin <[e-mail]>
---
 arch/mips/mm/tlb-r4k.c | 1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index 0596505770dba..11985399c4695 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -424,6 +424,7 @@  int has_transparent_hugepage(void)
 	}
 	return mask == PM_HUGE_MASK;
 }
+EXPORT_SYMBOL(has_transparent_hugepage);
 
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE  */