Move the nowait flag into the queue_limits feature field so that it can
be set atomically with the queue frozen.
Stacking drivers are simplified in that they now can simply set the
flag, and blk_stack_limits will clear it when the features is not
supported by any of the underlying devices.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
block/blk-mq-debugfs.c | 1 -
block/blk-mq.c | 2 +-
block/blk-settings.c | 9 +++++++++
drivers/block/brd.c | 4 ++--
drivers/md/dm-table.c | 18 +++---------------
drivers/md/md.c | 18 +-----------------
drivers/nvme/host/multipath.c | 3 +--
include/linux/blkdev.h | 9 +++++----
8 files changed, 22 insertions(+), 42 deletions(-)