block: replace fmode_t with a block-specific type for block open flags

The only overlap between the block open flags mapped into the fmode_t and
other uses of fmode_t are FMODE_READ and FMODE_WRITE.  Define a new
blk_mode_t instead for use in blkdev_get_by_{dev,path}, ->open and
->ioctl and stop abusing fmode_t.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jack Wang <jinpu.wang@ionos.com>		[rnbd]
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Link: https://lore.kernel.org/r/20230608110258.189493-28-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 7 insertions, 9 deletions

diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index a629b38dec66..651009b3a601 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -608,20 +608,18 @@ static void setup_medium(struct floppy_state *fs)
 	}
 }
 
-static int floppy_open(struct gendisk *disk, fmode_t mode)
+static int floppy_open(struct gendisk *disk, blk_mode_t mode)
 {
 	struct floppy_state *fs = disk->private_data;
 	struct swim __iomem *base = fs->swd->base;
 	int err;
 
-	if (fs->ref_count == -1 || (fs->ref_count && mode & FMODE_EXCL))
+	if (fs->ref_count == -1 || (fs->ref_count && mode & BLK_OPEN_EXCL))
 		return -EBUSY;
-
-	if (mode & FMODE_EXCL)
+	if (mode & BLK_OPEN_EXCL)
 		fs->ref_count = -1;
 	else
 		fs->ref_count++;
-
 	swim_write(base, setup, S_IBM_DRIVE  | S_FCLK_DIV2);
 	udelay(10);
 	swim_drive(base, fs->location);
@@ -636,10 +634,10 @@ static int floppy_open(struct gendisk *disk, fmode_t mode)
 
 	set_capacity(fs->disk, fs->total_secs);
 
-	if (mode & FMODE_NDELAY)
+	if (mode & BLK_OPEN_NDELAY)
 		return 0;
 
-	if (mode & (FMODE_READ|FMODE_WRITE)) {
+	if (mode & (BLK_OPEN_READ | BLK_OPEN_WRITE)) {
 		if (disk_check_media_change(disk) && fs->disk_in)
 			fs->ejected = 0;
 		if ((mode & FMODE_WRITE) && fs->write_protected) {
@@ -659,7 +657,7 @@ out:
 	return err;
 }
 
-static int floppy_unlocked_open(struct gendisk *disk, fmode_t mode)
+static int floppy_unlocked_open(struct gendisk *disk, blk_mode_t mode)
 {
 	int ret;
 
@@ -686,7 +684,7 @@ static void floppy_release(struct gendisk *disk)
 	mutex_unlock(&swim_mutex);
 }
 
-static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
+static int floppy_ioctl(struct block_device *bdev, blk_mode_t mode,
 			unsigned int cmd, unsigned long param)
 {
 	struct floppy_state *fs = bdev->bd_disk->private_data;