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btrfs: remove btrfs_chunk_map::io_(align|width) members

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Those two members are read from on-disk metadata, but never utilized.
And for new chunks we always set those members to BTRFS_STRIPE_LEN
anyway.

Thus there is no need to keep them inside btrfs_chunk_map.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2026-05-22 18:53:51 +09:30 committed by David Sterba
parent 690c2accac
commit 4cbafa2ff3
2 changed files with 0 additions and 6 deletions
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4
fs/btrfs/volumes.c
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@ -6033,8 +6033,6 @@ static struct btrfs_block_group *create_chunk(struct btrfs_trans_handle *trans,
map->chunk_len = ctl->chunk_size;
map->stripe_size = ctl->stripe_size;
map->type = type;
map->io_align = BTRFS_STRIPE_LEN;
map->io_width = BTRFS_STRIPE_LEN;
map->sub_stripes = ctl->sub_stripes;
map->num_stripes = ctl->num_stripes;
@ -7597,8 +7595,6 @@ static int read_one_chunk(struct btrfs_key *key, struct extent_buffer *leaf,
map->start = logical;
map->chunk_len = length;
map->num_stripes = num_stripes;
map->io_width = btrfs_chunk_io_width(leaf, chunk);
map->io_align = btrfs_chunk_io_align(leaf, chunk);
map->type = type;
/*
* We can't use the sub_stripes value, as for profiles other than

2
fs/btrfs/volumes.h
View File

@ -633,8 +633,6 @@ struct btrfs_chunk_map {
u64 chunk_len;
u64 stripe_size;
u64 type;
int io_align;
int io_width;
int num_stripes;
int sub_stripes;
struct btrfs_io_stripe stripes[];