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-rw-r--r--block/bio.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/block/bio.c b/block/bio.c
index dbabd48..cf75915 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -874,7 +874,7 @@ int submit_bio_wait(int rw, struct bio *bio)
bio->bi_private = &ret;
bio->bi_end_io = submit_bio_wait_endio;
submit_bio(rw, bio);
- wait_for_completion(&ret.event);
+ wait_for_completion_io(&ret.event);
return ret.error;
}
@@ -1090,9 +1090,12 @@ int bio_uncopy_user(struct bio *bio)
if (!bio_flagged(bio, BIO_NULL_MAPPED)) {
/*
* if we're in a workqueue, the request is orphaned, so
- * don't copy into a random user address space, just free.
+ * don't copy into a random user address space, just free
+ * and return -EINTR so user space doesn't expect any data.
*/
- if (current->mm && bio_data_dir(bio) == READ)
+ if (!current->mm)
+ ret = -EINTR;
+ else if (bio_data_dir(bio) == READ)
ret = bio_copy_to_iter(bio, bmd->iter);
if (bmd->is_our_pages)
bio_free_pages(bio);
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