[RFC PATCH v2 3/3] block: Always use a bounce buffer when XPFO is enabled
From: Juerg Haefliger <hidden>
Date: 2016-09-02 11:40:04
Also in:
lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
This is a temporary hack to prevent the use of bio_map_user_iov() which causes XPFO page faults. Signed-off-by: Juerg Haefliger <redacted> --- 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
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