diff options
| author | Christoph Hellwig <hch@lst.de> | 2024-06-17 08:04:48 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-06-19 07:58:28 -0600 |
| commit | 8023e144f9d6e35f8786937e2f0c2fea0aba6dbc (patch) | |
| tree | 5c3e0b93942aa38e885554f1b06926fdd6992ba0 /block/blk-settings.c | |
| parent | f467fee48da4500786e145489787b37adae317c3 (diff) | |
block: move the poll flag to queue_limits
Move the poll 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>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-22-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-settings.c')
| -rw-r--r-- | block/blk-settings.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c index bf4622c19b5c..026ba68d8298 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -460,13 +460,15 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b, t->features |= (b->features & BLK_FEAT_INHERIT_MASK); /* - * BLK_FEAT_NOWAIT needs to be supported both by the stacking driver - * and all underlying devices. The stacking driver sets the flag - * before stacking the limits, and this will clear the flag if any - * of the underlying devices does not support it. + * BLK_FEAT_NOWAIT and BLK_FEAT_POLL need to be supported both by the + * stacking driver and all underlying devices. The stacking driver sets + * the flags before stacking the limits, and this will clear the flags + * if any of the underlying devices does not support it. */ if (!(b->features & BLK_FEAT_NOWAIT)) t->features &= ~BLK_FEAT_NOWAIT; + if (!(b->features & BLK_FEAT_POLL)) + t->features &= ~BLK_FEAT_POLL; t->max_sectors = min_not_zero(t->max_sectors, b->max_sectors); t->max_user_sectors = min_not_zero(t->max_user_sectors, |