This prepares for moving the rotational flag into the queue_limits and
also fixes it for the case where the loop device is backed by a block
device.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>
---
drivers/block/loop.c | 23 ++++-------------------
1 file changed, 4 insertions(+), 19 deletions(-)
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 6a4826708a3acf..8991de8fb1bb0b 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -916,24 +916,6 @@ static void loop_free_idle_workers_timer(struct timer_list *timer)
return loop_free_idle_workers(lo, false);
}
-static void loop_update_rotational(struct loop_device *lo)
-{
- struct file *file = lo->lo_backing_file;
- struct inode *file_inode = file->f_mapping->host;
- struct block_device *file_bdev = file_inode->i_sb->s_bdev;
- struct request_queue *q = lo->lo_queue;
- bool nonrot = true;
-
- /* not all filesystems (e.g. tmpfs) have a sb->s_bdev */
- if (file_bdev)
- nonrot = bdev_nonrot(file_bdev);
-
- if (nonrot)
- blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
- else
- blk_queue_flag_clear(QUEUE_FLAG_NONROT, q);
-}
-
/**
* loop_set_status_from_info - configure device from loop_info
* @lo: struct loop_device to configure
@@ -1003,6 +985,10 @@ static int loop_reconfigure_limits(struct loop_device *lo, unsigned short bsize)
lim.logical_block_size = bsize;
lim.physical_block_size = bsize;
lim.io_min = bsize;
+ if (!backing_bdev || bdev_nonrot(backing_bdev))
+ blk_queue_flag_set(QUEUE_FLAG_NONROT, lo->lo_queue);
+ else
+ blk_queue_flag_clear(QUEUE_FLAG_NONROT, lo->lo_queue);
loop_config_discard(lo, &lim);
return queue_limits_commit_update(lo->lo_queue, &lim);
}
@@ -1099,7 +1085,6 @@ static int loop_configure(struct loop_device *lo, blk_mode_t mode,
if (WARN_ON_ONCE(error))
goto out_unlock;
- loop_update_rotational(lo);
loop_update_dio(lo);
loop_sysfs_init(lo);
--
2.43.0
