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btrfs: zoned: load active zone info for block group 

Load activeness of underlying zones of a block group. When underlying zones
are active, we add the block group to the fs_info->zone_active_bgs list.

Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2021-08-19 21:19:18 +09:00 committed by David Sterba
parent afba2bc036
commit 68a384b5ab
1 changed files with 24 additions and 0 deletions
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24
fs/btrfs/zoned.c
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@ -1170,6 +1170,7 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new)
unsigned int nofs_flag;
u64 *alloc_offsets = NULL;
u64 *caps = NULL;
unsigned long *active = NULL;
u64 last_alloc = 0;
u32 num_sequential = 0, num_conventional = 0;
@ -1214,6 +1215,12 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new)
goto out;
}
active = bitmap_zalloc(map->num_stripes, GFP_NOFS);
if (!active) {
ret = -ENOMEM;
goto out;
}
for (i = 0; i < map->num_stripes; i++) {
bool is_sequential;
struct blk_zone zone;
@ -1297,8 +1304,16 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new)
/* Partially used zone */
alloc_offsets[i] =
((zone.wp - zone.start) << SECTOR_SHIFT);
__set_bit(i, active);
break;
}
/*
* Consider a zone as active if we can allow any number of
* active zones.
*/
if (!device->zone_info->max_active_zones)
__set_bit(i, active);
}
if (num_sequential > 0)
@ -1346,6 +1361,7 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new)
}
cache->alloc_offset = alloc_offsets[0];
cache->zone_capacity = caps[0];
cache->zone_is_active = test_bit(0, active);
break;
case BTRFS_BLOCK_GROUP_DUP:
case BTRFS_BLOCK_GROUP_RAID1:
@ -1361,6 +1377,13 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new)
goto out;
}
if (cache->zone_is_active) {
btrfs_get_block_group(cache);
spin_lock(&fs_info->zone_active_bgs_lock);
list_add_tail(&cache->active_bg_list, &fs_info->zone_active_bgs);
spin_unlock(&fs_info->zone_active_bgs_lock);
}
out:
if (cache->alloc_offset > fs_info->zone_size) {
btrfs_err(fs_info,
@ -1392,6 +1415,7 @@ out:
kfree(cache->physical_map);
cache->physical_map = NULL;
}
bitmap_free(active);
kfree(caps);
kfree(alloc_offsets);
free_extent_map(em);