From 58474f76a770bcc79d4b2d7232e4d6650e732b50 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 12 Aug 2024 02:27:36 -0400 Subject: bcachefs: bcachefs_metadata_version_disk_accounting_inum This adds another disk accounting counter to track usage per inode number (any snapshot ID). This will be used for a couple things: - It'll give us a way to tell the user how much space a given file ista consuming in all snapshots; i.e. how much extra space it's consuming due to snapshot versioning. - It counts number of extents and total size of extents (both in btree keyspace sectors and actual disk usage), meaning it gives us average extent size: that is, it'll let us cheaply find fragmented files that should be defragmented. Signed-off-by: Kent Overstreet --- fs/bcachefs/disk_accounting_format.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'fs/bcachefs/disk_accounting_format.h') diff --git a/fs/bcachefs/disk_accounting_format.h b/fs/bcachefs/disk_accounting_format.h index a93cf26ff4a9..7b6e6c97e6aa 100644 --- a/fs/bcachefs/disk_accounting_format.h +++ b/fs/bcachefs/disk_accounting_format.h @@ -103,7 +103,8 @@ static inline bool data_type_is_hidden(enum bch_data_type type) x(compression, 4) \ x(snapshot, 5) \ x(btree, 6) \ - x(rebalance_work, 7) + x(rebalance_work, 7) \ + x(inum, 8) enum disk_accounting_type { #define x(f, nr) BCH_DISK_ACCOUNTING_##f = nr, @@ -136,6 +137,10 @@ struct bch_acct_btree { __u32 id; } __packed; +struct bch_acct_inum { + __u64 inum; +} __packed; + struct bch_acct_rebalance_work { }; @@ -152,6 +157,7 @@ struct disk_accounting_pos { struct bch_acct_snapshot snapshot; struct bch_acct_btree btree; struct bch_acct_rebalance_work rebalance_work; + struct bch_acct_inum inum; } __packed; } __packed; struct bpos _pad; -- cgit v1.2.3