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| author |   Stefan Roesch <shr@fb.com> | 2022-02-08 11:31:20 -0800 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2022-07-25 17:45:32 +0200 |
| commit | f6fca3917b4d99d8c13901738afec35f570a3c2f (patch) | |
| tree | 23209c8ca9e98df1abfa6a48afcfca15f7448b40 /fs/btrfs/volumes.c | |
| parent | btrfs: do not batch insert non-consecutive dir indexes during log replay (diff) | |
| download | wireguard-linux-f6fca3917b4d99d8c13901738afec35f570a3c2f.tar.xz wireguard-linux-f6fca3917b4d99d8c13901738afec35f570a3c2f.zip | |
btrfs: store chunk size in space-info struct
The chunk size is stored in the btrfs_space_info structure. It is
initialized at the start and is then used.
A new API is added to update the current chunk size. This API is used
to be able to expose the chunk_size as a sysfs setting.
Signed-off-by: Stefan Roesch <shr@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ rename and merge helpers, switch atomic type to u64, style fixes ]
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/volumes.c')
| -rw-r--r-- | fs/btrfs/volumes.c | 28 |
1 files changed, 9 insertions, 19 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index a2bb0928dc06..b8e40d55012f 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -5071,26 +5071,16 @@ static void init_alloc_chunk_ctl_policy_regular( struct btrfs_fs_devices *fs_devices, struct alloc_chunk_ctl *ctl) { - u64 type = ctl->type; + struct btrfs_space_info *space_info; - if (type & BTRFS_BLOCK_GROUP_DATA) { - ctl->max_stripe_size = SZ_1G; - ctl->max_chunk_size = BTRFS_MAX_DATA_CHUNK_SIZE; - } else if (type & BTRFS_BLOCK_GROUP_METADATA) { - /* For larger filesystems, use larger metadata chunks */ - if (fs_devices->total_rw_bytes > 50ULL * SZ_1G) - ctl->max_stripe_size = SZ_1G; - else - ctl->max_stripe_size = SZ_256M; - ctl->max_chunk_size = ctl->max_stripe_size; - } else if (type & BTRFS_BLOCK_GROUP_SYSTEM) { - ctl->max_stripe_size = SZ_32M; - ctl->max_chunk_size = 2 * ctl->max_stripe_size; - ctl->devs_max = min_t(int, ctl->devs_max, - BTRFS_MAX_DEVS_SYS_CHUNK); - } else { - BUG(); - } + space_info = btrfs_find_space_info(fs_devices->fs_info, ctl->type); + ASSERT(space_info); + + ctl->max_chunk_size = READ_ONCE(space_info->chunk_size); + ctl->max_stripe_size = ctl->max_chunk_size; + + if (ctl->type & BTRFS_BLOCK_GROUP_SYSTEM) + ctl->devs_max = min_t(int, ctl->devs_max, BTRFS_MAX_DEVS_SYS_CHUNK); /* We don't want a chunk larger than 10% of writable space */ ctl->max_chunk_size = min(div_factor(fs_devices->total_rw_bytes, 1), |