[PATCH 10/12] btrfs-progs: drop alloc_chunk_ctl::stripe_len

[Naohiro Aota]

Since commit b9444efb6658 ("btrfs-progs: don't pretend RAID56 has a
different stripe length"), alloc_chunk_ctl::stripe_len is always fixed to
BTRFS_STRIPE_LEN. Let's replace alloc_chunk_ctl::stripe_len with
BTRFS_STRIPE_LEN, like in the kernel code.

Signed-off-by: Naohiro Aota <naohiro.a...@wdc.com>
---
 kernel-shared/volumes.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/kernel-shared/volumes.c b/kernel-shared/volumes.c
index d01d825c67ce..280537f6549d 100644
--- a/kernel-shared/volumes.c
+++ b/kernel-shared/volumes.c
@@ -159,7 +159,6 @@ struct alloc_chunk_ctl {
        u64 min_stripe_size;
        u64 num_bytes;
        u64 max_chunk_size;
-       int stripe_len;
        int total_devs;
        u64 dev_offset;
 };
@@ -1057,7 +1056,6 @@ static void init_alloc_chunk_ctl(struct btrfs_fs_info 
*info,
        ctl->calc_size = SZ_8M;
        ctl->min_stripe_size = SZ_1M;
        ctl->max_chunk_size = 4 * ctl->calc_size;
-       ctl->stripe_len = BTRFS_STRIPE_LEN;
        ctl->total_devs = btrfs_super_num_devices(info->super_copy);
        ctl->dev_offset = 0;
 
@@ -1098,13 +1096,13 @@ static int decide_stripe_size_regular(struct 
alloc_chunk_ctl *ctl)
        if (chunk_size > ctl->max_chunk_size) {
                ctl->calc_size = ctl->max_chunk_size;
                ctl->calc_size /= ctl->num_stripes;
-               ctl->calc_size = round_down(ctl->calc_size, ctl->stripe_len);
+               ctl->calc_size = round_down(ctl->calc_size, BTRFS_STRIPE_LEN);
        }
        /* we don't want tiny stripes */
        ctl->calc_size = max_t(u64, ctl->calc_size, ctl->min_stripe_size);
 
        /* Align to the stripe length */
-       ctl->calc_size = round_down(ctl->calc_size, ctl->stripe_len);
+       ctl->calc_size = round_down(ctl->calc_size, BTRFS_STRIPE_LEN);
 
        return 0;
 }
@@ -1206,17 +1204,17 @@ static int create_chunk(struct btrfs_trans_handle 
*trans,
        /* key was set above */
        btrfs_set_stack_chunk_length(chunk, ctl->num_bytes);
        btrfs_set_stack_chunk_owner(chunk, extent_root->root_key.objectid);
-       btrfs_set_stack_chunk_stripe_len(chunk, ctl->stripe_len);
+       btrfs_set_stack_chunk_stripe_len(chunk, BTRFS_STRIPE_LEN);
        btrfs_set_stack_chunk_type(chunk, ctl->type);
        btrfs_set_stack_chunk_num_stripes(chunk, ctl->num_stripes);
-       btrfs_set_stack_chunk_io_align(chunk, ctl->stripe_len);
-       btrfs_set_stack_chunk_io_width(chunk, ctl->stripe_len);
+       btrfs_set_stack_chunk_io_align(chunk, BTRFS_STRIPE_LEN);
+       btrfs_set_stack_chunk_io_width(chunk, BTRFS_STRIPE_LEN);
        btrfs_set_stack_chunk_sector_size(chunk, info->sectorsize);
        btrfs_set_stack_chunk_sub_stripes(chunk, ctl->sub_stripes);
        map->sector_size = info->sectorsize;
-       map->stripe_len = ctl->stripe_len;
-       map->io_align = ctl->stripe_len;
-       map->io_width = ctl->stripe_len;
+       map->stripe_len = BTRFS_STRIPE_LEN;
+       map->io_align = BTRFS_STRIPE_LEN;
+       map->io_width = BTRFS_STRIPE_LEN;
        map->type = ctl->type;
        map->num_stripes = ctl->num_stripes;
        map->sub_stripes = ctl->sub_stripes;
@@ -1369,7 +1367,6 @@ int btrfs_alloc_data_chunk(struct btrfs_trans_handle 
*trans,
        ctl.min_stripe_size = num_bytes;
        ctl.num_bytes = num_bytes;
        ctl.max_chunk_size = num_bytes;
-       ctl.stripe_len = BTRFS_STRIPE_LEN;
        ctl.total_devs = btrfs_super_num_devices(info->super_copy);
        ctl.dev_offset = *start;
 
-- 
2.31.1