Btrfs: profiles filter
Select chunks based on a given profile mask. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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2 changed files with 28 additions and 0 deletions
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@ -2102,6 +2102,24 @@ static void unset_balance_control(struct btrfs_fs_info *fs_info)
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kfree(bctl);
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}
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/*
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* Balance filters. Return 1 if chunk should be filtered out
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* (should not be balanced).
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*/
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static int chunk_profiles_filter(u64 chunk_profile,
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struct btrfs_balance_args *bargs)
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{
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chunk_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;
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if (chunk_profile == 0)
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chunk_profile = BTRFS_AVAIL_ALLOC_BIT_SINGLE;
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if (bargs->profiles & chunk_profile)
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return 0;
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return 1;
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}
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static int should_balance_chunk(struct btrfs_root *root,
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struct extent_buffer *leaf,
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struct btrfs_chunk *chunk, u64 chunk_offset)
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@ -2123,6 +2141,12 @@ static int should_balance_chunk(struct btrfs_root *root,
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else if (chunk_type & BTRFS_BLOCK_GROUP_METADATA)
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bargs = &bctl->meta;
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/* profiles filter */
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if ((bargs->flags & BTRFS_BALANCE_ARGS_PROFILES) &&
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chunk_profiles_filter(chunk_type, bargs)) {
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return 0;
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}
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return 1;
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}
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@ -196,6 +196,10 @@ struct map_lookup {
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#define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \
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BTRFS_BALANCE_SYSTEM | \
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BTRFS_BALANCE_METADATA)
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/*
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* Balance filters
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*/
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#define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0)
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struct btrfs_balance_args;
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struct btrfs_balance_control {
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