diff options
| -rw-r--r-- | block/blk-core.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 18455c4f618a..495bdc4a23da 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1509,6 +1509,19 @@ static inline void __generic_make_request(struct bio *bio) if (bio_check_eod(bio, nr_sectors)) goto end_io; + /* + * Filter flush bio's early so that make_request based + * drivers without flush support don't have to worry + * about them. + */ + if ((bio->bi_rw & (REQ_FLUSH | REQ_FUA)) && !q->flush_flags) { + bio->bi_rw &= ~(REQ_FLUSH | REQ_FUA); + if (!nr_sectors) { + err = 0; + goto end_io; + } + } + if ((bio->bi_rw & REQ_DISCARD) && (!blk_queue_discard(q) || ((bio->bi_rw & REQ_SECURE) && |