92d92e99b7
Add a runtime feature (-R) flag for the free space tree. A filesystem that is mkfs'd with -R free-space-tree then mounted with no options has the same contents as one mkfs'd without the option, then mounted with '-o space_cache=v2'. The only tricky thing is in exactly how to call the tree creation code. Using btrfs_create_free_space_tree as is did not quite work, because an extra reference to the eb (root->commit_root) is leaked, which mkfs complains about with a warning. I opted to follow how the uuid tree is created by adding it to the dirty roots list for cleanup by commit_tree_roots in commit_transaction. As a result, btrfs_create_free_space_tree no longer exactly matches the version in the kernel sources. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Boris Burkov <boris@bur.io> Signed-off-by: David Sterba <dsterba@suse.com>
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __BTRFS_FSFEATURES_H__
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#define __BTRFS_FSFEATURES_H__
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#include "kerncompat.h"
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#define BTRFS_MKFS_DEFAULT_NODE_SIZE SZ_16K
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#define BTRFS_MKFS_DEFAULT_FEATURES \
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(BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF \
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| BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA)
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/*
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* Avoid multi-device features (RAID56) and mixed block groups
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*/
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#define BTRFS_CONVERT_ALLOWED_FEATURES \
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(BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF \
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| BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL \
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| BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO \
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| BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD \
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| BTRFS_FEATURE_INCOMPAT_BIG_METADATA \
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| BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF \
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| BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA \
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| BTRFS_FEATURE_INCOMPAT_NO_HOLES)
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#define BTRFS_FEATURE_LIST_ALL (1ULL << 63)
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#define BTRFS_RUNTIME_FEATURE_QUOTA (1ULL << 0)
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#define BTRFS_RUNTIME_FEATURE_FREE_SPACE_TREE (1ULL << 1)
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void btrfs_list_all_fs_features(u64 mask_disallowed);
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void btrfs_list_all_runtime_features(u64 mask_disallowed);
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char *btrfs_parse_fs_features(char *namelist, u64 *flags);
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char *btrfs_parse_runtime_features(char *namelist, u64 *flags);
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void btrfs_process_fs_features(u64 flags);
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void btrfs_process_runtime_features(u64 flags);
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void btrfs_parse_fs_features_to_string(char *buf, u64 flags);
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void btrfs_parse_runtime_features_to_string(char *buf, u64 flags);
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void print_kernel_version(FILE *stream, u32 version);
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u32 get_running_kernel_version(void);
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int btrfs_check_nodesize(u32 nodesize, u32 sectorsize, u64 features);
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#endif
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