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| author | Christoph Hellwig <hch@lst.de> | 2024-02-13 08:34:13 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-02-13 08:56:59 -0700 |
| commit | c490f226a0ea22639e81ac34edc884e238ea955a (patch) | |
| tree | 5fb754b83ebe924687562fae331283830892f109 /block/blk-settings.c | |
| parent | b9947297d00b9c75b271db88165e39c0208bec2e (diff) | |
| download | lwn-c490f226a0ea22639e81ac34edc884e238ea955a.tar.gz lwn-c490f226a0ea22639e81ac34edc884e238ea955a.zip | |
block: decouple blk_set_stacking_limits from blk_set_default_limits
blk_set_stacking_limits uses very little from blk_set_default_limits.
Open code these initializations in preparation for rewriting
blk_set_default_limits.
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/20240213073425.1621680-4-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 | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c index f16d3fec6658..24042f6b33d5 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -65,13 +65,18 @@ void blk_set_default_limits(struct queue_limits *lim) * blk_set_stacking_limits - set default limits for stacking devices * @lim: the queue_limits structure to reset * - * Description: - * Returns a queue_limit struct to its default state. Should be used - * by stacking drivers like DM that have no internal limits. + * Prepare queue limits for applying limits from underlying devices using + * blk_stack_limits(). */ void blk_set_stacking_limits(struct queue_limits *lim) { - blk_set_default_limits(lim); + memset(lim, 0, sizeof(*lim)); + lim->logical_block_size = SECTOR_SIZE; + lim->physical_block_size = SECTOR_SIZE; + lim->io_min = SECTOR_SIZE; + lim->discard_granularity = SECTOR_SIZE; + lim->dma_alignment = SECTOR_SIZE - 1; + lim->seg_boundary_mask = BLK_SEG_BOUNDARY_MASK; /* Inherit limits from component devices */ lim->max_segments = USHRT_MAX; |