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btrfs: zoned: make zone finishing multi stripe capable

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Currently finishing of a zone only works if the block group isn't
spanning more than one zone.

This limitation is purely artificial and can be easily expanded to block
groups being places across multiple zones.

This is a preparation for allowing DUP and later more complex block-group
profiles on zoned btrfs.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Johannes Thumshirn 2022-01-26 05:46:21 -08:00 • committed by David Sterba
parent f9a912a3c4
commit 4dcbb8ab31
1 changed files with 25 additions and 23 deletions
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26
fs/btrfs/zoned.c
View file

@ -1845,19 +1845,12 @@ int btrfs_zone_finish(struct btrfs_block_group *block_group)
struct btrfs_device *device;
u64 physical;
int ret = 0;
int i;
if (!btrfs_is_zoned(fs_info))
return 0;
map = block_group->physical_map;
/* Currently support SINGLE profile only */
ASSERT(map->num_stripes == 1);
device = map->stripes[0].dev;
physical = map->stripes[0].physical;
if (device->zone_info->max_active_zones == 0)
return 0;
spin_lock(&block_group->lock);
if (!block_group->zone_is_active) {
@ -1909,14 +1902,24 @@ int btrfs_zone_finish(struct btrfs_block_group *block_group)
btrfs_clear_data_reloc_bg(block_group);
spin_unlock(&block_group->lock);
for (i = 0; i < map->num_stripes; i++) {
device = map->stripes[i].dev;
physical = map->stripes[i].physical;
if (device->zone_info->max_active_zones == 0)
continue;
ret = blkdev_zone_mgmt(device->bdev, REQ_OP_ZONE_FINISH,
physical >> SECTOR_SHIFT,
device->zone_info->zone_size >> SECTOR_SHIFT,
GFP_NOFS);
btrfs_dec_block_group_ro(block_group);
if (!ret) {
if (ret)
return ret;
btrfs_dev_clear_active_zone(device, physical);
}
btrfs_dec_block_group_ro(block_group);
spin_lock(&fs_info->zone_active_bgs_lock);
ASSERT(!list_empty(&block_group->active_bg_list));
@ -1925,9 +1928,8 @@ int btrfs_zone_finish(struct btrfs_block_group *block_group)
/* For active_bg_list */
btrfs_put_block_group(block_group);
}
return ret;
return 0;
}
bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags)