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| author | Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2021-02-04 13:22:03 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2021-02-09 04:46:05 +0300 |
| commit | 08f455593fff701e103876d4db5d3f4f6d0ff871 (patch) | |
| tree | 21c7fd1247437897726a182c1b9eb91bdbae267f /fs/btrfs | |
| parent | 138082f36610698e3fd00318f275d7f2159b8d26 (diff) | |
| download | linux-08f455593fff701e103876d4db5d3f4f6d0ff871.tar.xz | |
btrfs: zoned: cache if block group is on a sequential zone
On a zoned filesystem, cache if a block group is on a sequential write
only zone.
On sequential write only zones, we can use REQ_OP_ZONE_APPEND for
writing data, therefore provide btrfs_use_zone_append() to figure out if
IO is targeting a sequential write only zone and we can use
REQ_OP_ZONE_APPEND for data writing.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/block-group.h | 3 | ||||
| -rw-r--r-- | fs/btrfs/zoned.c | 29 | ||||
| -rw-r--r-- | fs/btrfs/zoned.h | 6 |
3 files changed, 38 insertions, 0 deletions
diff --git a/fs/btrfs/block-group.h b/fs/btrfs/block-group.h index d14ac03bb93d..31c7c5872b92 100644 --- a/fs/btrfs/block-group.h +++ b/fs/btrfs/block-group.h @@ -181,6 +181,9 @@ struct btrfs_block_group { */ int needs_free_space; + /* Flag indicating this block group is placed on a sequential zone */ + bool seq_zone; + /* Record locked full stripes for RAID5/6 block group */ struct btrfs_full_stripe_locks_tree full_stripe_locks_root; diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index 1de67d789b83..f6c68704c840 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -1101,6 +1101,9 @@ int btrfs_load_block_group_zone_info(struct btrfs_block_group *cache, bool new) } } + if (num_sequential > 0) + cache->seq_zone = true; + if (num_conventional > 0) { /* * Avoid calling calculate_alloc_pointer() for new BG. It @@ -1218,3 +1221,29 @@ void btrfs_free_redirty_list(struct btrfs_transaction *trans) } spin_unlock(&trans->releasing_ebs_lock); } + +bool btrfs_use_zone_append(struct btrfs_inode *inode, struct extent_map *em) +{ + struct btrfs_fs_info *fs_info = inode->root->fs_info; + struct btrfs_block_group *cache; + bool ret = false; + + if (!btrfs_is_zoned(fs_info)) + return false; + + if (!fs_info->max_zone_append_size) + return false; + + if (!is_data_inode(&inode->vfs_inode)) + return false; + + cache = btrfs_lookup_block_group(fs_info, em->block_start); + ASSERT(cache); + if (!cache) + return false; + + ret = cache->seq_zone; + btrfs_put_block_group(cache); + + return ret; +} diff --git a/fs/btrfs/zoned.h b/fs/btrfs/zoned.h index c105641a6ad3..14d578328cbe 100644 --- a/fs/btrfs/zoned.h +++ b/fs/btrfs/zoned.h @@ -46,6 +46,7 @@ void btrfs_calc_zone_unusable(struct btrfs_block_group *cache); void btrfs_redirty_list_add(struct btrfs_transaction *trans, struct extent_buffer *eb); void btrfs_free_redirty_list(struct btrfs_transaction *trans); +bool btrfs_use_zone_append(struct btrfs_inode *inode, struct extent_map *em); #else /* CONFIG_BLK_DEV_ZONED */ static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos, struct blk_zone *zone) @@ -133,6 +134,11 @@ static inline void btrfs_redirty_list_add(struct btrfs_transaction *trans, struct extent_buffer *eb) { } static inline void btrfs_free_redirty_list(struct btrfs_transaction *trans) { } +static inline bool btrfs_use_zone_append(struct btrfs_inode *inode, + struct extent_map *em) +{ + return false; +} #endif static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos) |