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-rw-r--r--block/ll_rw_blk.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 56f2646612e6..3e4e8bfbe856 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -3221,6 +3221,7 @@ static inline void __generic_make_request(struct bio *bio)
3221 sector_t old_sector; 3221 sector_t old_sector;
3222 int ret, nr_sectors = bio_sectors(bio); 3222 int ret, nr_sectors = bio_sectors(bio);
3223 dev_t old_dev; 3223 dev_t old_dev;
3224 int err = -EIO;
3224 3225
3225 might_sleep(); 3226 might_sleep();
3226 3227
@@ -3248,7 +3249,7 @@ static inline void __generic_make_request(struct bio *bio)
3248 bdevname(bio->bi_bdev, b), 3249 bdevname(bio->bi_bdev, b),
3249 (long long) bio->bi_sector); 3250 (long long) bio->bi_sector);
3250end_io: 3251end_io:
3251 bio_endio(bio, -EIO); 3252 bio_endio(bio, err);
3252 break; 3253 break;
3253 } 3254 }
3254 3255
@@ -3283,6 +3284,10 @@ end_io:
3283 3284
3284 if (bio_check_eod(bio, nr_sectors)) 3285 if (bio_check_eod(bio, nr_sectors))
3285 goto end_io; 3286 goto end_io;
3287 if (bio_empty_barrier(bio) && !q->prepare_flush_fn) {
3288 err = -EOPNOTSUPP;
3289 goto end_io;
3290 }
3286 3291
3287 ret = q->make_request_fn(q, bio); 3292 ret = q->make_request_fn(q, bio);
3288 } while (ret); 3293 } while (ret);