diff options
| author | Christoph Hellwig <hch@lst.de> | 2023-05-24 17:03:16 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2023-06-19 13:59:33 +0200 |
| commit | 71df088c1cc090d232eb691d8f42284a2c6409eb (patch) | |
| tree | b2059ca30e4abf09ef53cf1e40d789a2c6566d14 /fs/btrfs/zoned.h | |
| parent | 52b1fdca23ac0fbcad363a1a5b426bf0d56b715a (diff) | |
btrfs: defer splitting of ordered extents until I/O completion
The btrfs zoned completion code currently needs an ordered_extent and
extent_map per bio so that it can account for the non-predictable
write location from Zone Append. To archive that it currently splits
the ordered_extent and extent_map at I/O submission time, and then
records the actual physical address in the ->physical field of the
ordered_extent.
This patch instead switches to record the "original" physical address
that the btrfs allocator assigned in spare space in the btrfs_bio,
and then rewrites the logical address in the btrfs_ordered_sum
structure at I/O completion time. This allows the ordered extent
completion handler to simply walk the list of ordered csums and
split the ordered extent as needed. This removes an extra ordered
extent and extent_map lookup and manipulation during the I/O
submission path, and instead batches it in the I/O completion path
where we need to touch these anyway.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/zoned.h')
| -rw-r--r-- | fs/btrfs/zoned.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/fs/btrfs/zoned.h b/fs/btrfs/zoned.h index 3058ef559c98..27322b926038 100644 --- a/fs/btrfs/zoned.h +++ b/fs/btrfs/zoned.h @@ -30,6 +30,8 @@ struct btrfs_zoned_device_info { struct blk_zone sb_zones[2 * BTRFS_SUPER_MIRROR_MAX]; }; +void btrfs_finish_ordered_zoned(struct btrfs_ordered_extent *ordered); + #ifdef CONFIG_BLK_DEV_ZONED int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos, struct blk_zone *zone); @@ -56,7 +58,6 @@ void btrfs_redirty_list_add(struct btrfs_transaction *trans, struct extent_buffer *eb); bool btrfs_use_zone_append(struct btrfs_bio *bbio); void btrfs_record_physical_zoned(struct btrfs_bio *bbio); -void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered); bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info, struct extent_buffer *eb, struct btrfs_block_group **cache_ret); @@ -188,9 +189,6 @@ static inline void btrfs_record_physical_zoned(struct btrfs_bio *bbio) { } -static inline void btrfs_rewrite_logical_zoned( - struct btrfs_ordered_extent *ordered) { } - static inline bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info, struct extent_buffer *eb, struct btrfs_block_group **cache_ret) |