[PATCH 1/6] block: remove checks for FALLOC_FL_NO_HIDE_STALE

[Christoph Hellwig <hch@lst.de>]

While the FALLOC_FL_NO_HIDE_STALE value has been registered, it has
always been rejected by vfs_fallocate before making it into
blkdev_fallocate because it isn't in the supported mask.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 block/fops.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/block/fops.c b/block/fops.c
index 9825c1713a49a9..7f48f03a62e9a8 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -771,7 +771,7 @@ static ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to)
 
 #define	BLKDEV_FALLOC_FL_SUPPORTED					\
 		(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |		\
-		 FALLOC_FL_ZERO_RANGE | FALLOC_FL_NO_HIDE_STALE)
+		 FALLOC_FL_ZERO_RANGE)
 
 static long blkdev_fallocate(struct file *file, int mode, loff_t start,
 			     loff_t len)
@@ -830,14 +830,6 @@ static long blkdev_fallocate(struct file *file, int mode, loff_t start,
 					     len >> SECTOR_SHIFT, GFP_KERNEL,
 					     BLKDEV_ZERO_NOFALLBACK);
 		break;
-	case FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE | FALLOC_FL_NO_HIDE_STALE:
-		error = truncate_bdev_range(bdev, file_to_blk_mode(file), start, end);
-		if (error)
-			goto fail;
-
-		error = blkdev_issue_discard(bdev, start >> SECTOR_SHIFT,
-					     len >> SECTOR_SHIFT, GFP_KERNEL);
-		break;
 	default:
 		error = -EOPNOTSUPP;
 	}
-- 
2.43.0