Btrfs: use a dedicated inode num for root root dir
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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@ -6,9 +6,7 @@
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* Make sure nobh stuff is working properly for cows
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* Do actual block accounting
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* Check compat and incompat flags on the inode
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* Add virtual filesystems, mountable snapshots
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* Get rid of struct ctree_path, limiting tree levels held at one time
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* EEXIST for dirs instead of hash overflow
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* Release
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* Do real tree locking
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* Add extent mirroring (backup copies of blocks)
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@ -20,10 +18,3 @@
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* fsck
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* Scrub & defrag
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---
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metata FS ideas:
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mount metadata FS on /sys/fs/btrfs/dev/
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subvolumes in /sys/fs/btrfs/dev/fs/
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snapshots in /sys/fs/btrfs/dev/fs/snapshots
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mount -o bind
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ioctl to create a snapshot
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@ -15,7 +15,8 @@ extern struct kmem_cache *btrfs_path_cachep;
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#define BTRFS_ROOT_TREE_OBJECTID 1ULL
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#define BTRFS_EXTENT_TREE_OBJECTID 2ULL
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#define BTRFS_FS_TREE_OBJECTID 3ULL
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#define BTRFS_FIRST_FREE_OBJECTID 4ULL
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#define BTRFS_ROOT_TREE_DIR_OBJECTID 4ULL
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#define BTRFS_FIRST_FREE_OBJECTID 5ULL
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/*
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* we can actually store much bigger names, but lets not confuse the rest
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