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Merge pull request #811 from mmichal10/fix-discard

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Fix max discard size
This commit is contained in:
Robert Baldyga 2021-05-10 15:36:37 +02:00 committed by GitHub
commit a226b39c4e
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1 changed files with 4 additions and 23 deletions
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27
modules/cas_cache/volume/vol_block_dev_top.c
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@ -550,24 +550,6 @@ void _blockdev_set_exported_object_flush_fua(ocf_core_t core)
#endif
}
static int _blockdev_calc_discard_alignment(ocf_cache_t cache,
struct block_device *core_bd)
{
unsigned int granularity, offset;
sector_t start;
if (core_bd == core_bd->bd_contains)
return 0;
start = core_bd->bd_part->start_sect;
granularity = ocf_cache_get_line_size(cache) >> SECTOR_SHIFT;
offset = sector_div(start, granularity);
offset = (granularity - offset) % granularity;
return offset << SECTOR_SHIFT;
}
static void _blockdev_set_discard_properties(ocf_cache_t cache,
struct request_queue *exp_q, struct block_device *cache_bd,
struct block_device *core_bd, sector_t core_sectors)
@ -588,11 +570,10 @@ static void _blockdev_set_discard_properties(ocf_cache_t cache,
exp_q->limits.discard_granularity =
core_q->limits.discard_granularity;
} else {
blk_queue_max_discard_sectors(exp_q, core_sectors);
exp_q->limits.discard_granularity =
ocf_cache_get_line_size(cache);
exp_q->limits.discard_alignment =
_blockdev_calc_discard_alignment(cache, core_bd);
blk_queue_max_discard_sectors(exp_q,
min((uint64_t)core_sectors, (uint64_t)UINT_MAX));
exp_q->limits.discard_granularity = queue_logical_block_size(exp_q);
exp_q->limits.discard_alignment = 0;
}
}