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btrfs-progs: add the FREE_SPACE_TREE_VALID compat_ro bit definition 

This is just the definition; we don't support it yet.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
master
Omar Sandoval 2016-11-14 10:43:18 -08:00 committed by David Sterba
parent f9a13d867b
commit 41eaae6d74
1 changed files with 13 additions and 0 deletions
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13
ctree.h
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@ -467,6 +467,14 @@ struct btrfs_super_block {
* ones specified below then we will fail to mount
*/
#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0)
/*
* Older kernels on big-endian systems produced broken free space tree bitmaps,
* and btrfs-progs also used to corrupt the free space tree. If this bit is
* clear, then the free space tree cannot be trusted. btrfs-progs can also
* intentionally clear this bit to ask the kernel to rebuild the free space
* tree.
*/
#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1)
#define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0)
#define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1)
@ -493,6 +501,11 @@ struct btrfs_super_block {
#define BTRFS_FEATURE_COMPAT_SUPP 0ULL
/*
* The FREE_SPACE_TREE and FREE_SPACE_TREE_VALID compat_ro bits must not be
* added here until read-write support for the free space tree is implemented in
* btrfs-progs.
*/
#define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL
#define BTRFS_FEATURE_INCOMPAT_SUPP \