[RFC PATCH v2 3/3] block: Always use a bounce buffer when XPFO is enabled

[Juerg Haefliger]

This is a temporary hack to prevent the use of bio_map_user_iov()
which causes XPFO page faults.

Signed-off-by: Juerg Haefliger <juerg.haefli...@hpe.com>
---
 block/blk-map.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/blk-map.c b/block/blk-map.c
index b8657fa8dc9a..e889dbfee6fb 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -52,7 +52,7 @@ static int __blk_rq_map_user_iov(struct request *rq,
        struct bio *bio, *orig_bio;
        int ret;
 
-       if (copy)
+       if (copy || IS_ENABLED(CONFIG_XPFO))
                bio = bio_copy_user_iov(q, map_data, iter, gfp_mask);
        else
                bio = bio_map_user_iov(q, iter, gfp_mask);
-- 
2.9.3