block: kill QUEUE_FLAG_FLUSH_NQ

We have various helpers for setting/clearing this flag, and also
a helper to check if the queue supports queueable flushes or not.
But nobody uses them anymore, kill it with fire.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 0 insertions, 7 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 338604dff7d0..24ccab51085f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -592,7 +592,6 @@ struct request_queue {
 #define QUEUE_FLAG_POLL        19       /* IO polling enabled if set */
 #define QUEUE_FLAG_WC          20       /* Write back caching */
 #define QUEUE_FLAG_FUA         21       /* device supports FUA writes */
-#define QUEUE_FLAG_FLUSH_NQ    22       /* flush not queueuable */
 #define QUEUE_FLAG_DAX         23       /* device supports DAX */
 #define QUEUE_FLAG_STATS       24       /* track IO start and completion times */
 #define QUEUE_FLAG_POLL_STATS  25       /* collecting stats for hybrid polling */
@@ -1069,7 +1068,6 @@ extern void blk_queue_virt_boundary(struct request_queue *, unsigned long);
 extern void blk_queue_dma_alignment(struct request_queue *, int);
 extern void blk_queue_update_dma_alignment(struct request_queue *, int);
 extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
-extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable);
 extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua);
 
 /*
@@ -1446,11 +1444,6 @@ static inline unsigned int block_size(struct block_device *bdev)
         return bdev->bd_block_size;
 }
 
-static inline bool queue_flush_queueable(struct request_queue *q)
-{
-        return !test_bit(QUEUE_FLAG_FLUSH_NQ, &q->queue_flags);
-}
-
 typedef struct {struct page *v;} Sector;
 
 unsigned char *read_dev_sector(struct block_device *, sector_t, Sector *);