[RFC PATCH v2 3/3] block: Always use a bounce buffer when XPFO is enabled
From: Juerg Haefliger
Date: Fri Sep 02 2016 - 07:40:07 EST
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.haefliger@xxxxxxx>
---
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