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authorWill Deacon <will.deacon@arm.com>2012-10-19 14:03:31 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-06-11 12:04:17 -0700
commitad988bcb5b18ad5e1865f638cfc7ba3e600c4d46 (patch)
tree73e1dd275f1e34b81710c8a13e67106e55d344b8
parent7e4d02fdb2bb0f47405a0961a7f3991a56b5981b (diff)
downloadlinux-linaro-stable-ad988bcb5b18ad5e1865f638cfc7ba3e600c4d46.tar.gz
mm: highmem: export kmap_to_page for modules
commit f0263d2d222e9e25f2587e51a9dc58c6fb2a9352 upstream. Some virtio device drivers (9p) need to translate high virtual addresses to physical addresses, which are inserted into the virtqueue for processing by userspace. This patch exports the kmap_to_page symbol, so that the affected drivers can be compiled as modules. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: Yijing Wang <wangyijing@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--mm/highmem.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/highmem.c b/mm/highmem.c
index d517cd16a6eb..2a07f97dabf1 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -105,6 +105,7 @@ struct page *kmap_to_page(void *vaddr)
return virt_to_page(addr);
}
+EXPORT_SYMBOL(kmap_to_page);
static void flush_all_zero_pkmaps(void)
{