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Btrfs: groundwork for subvolume and snapshot roots

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-04-09 10:42:37 -04:00
committed by David Woodhouse
父節點 d6e4a428eb
當前提交 0f7d52f443
共有 6 個文件被更改，包括 281 次插入 和 98 次删除
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20
fs/btrfs/ctree.h
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@@ -232,12 +232,12 @@ struct btrfs_inode_map_item {
struct crypto_hash;
struct btrfs_fs_info {
struct btrfs_root *fs_root;
struct btrfs_root *extent_root;
struct btrfs_root *tree_root;
struct btrfs_root *inode_root;
struct btrfs_key current_insert;
struct btrfs_key last_insert;
struct radix_tree_root fs_roots_radix;
struct radix_tree_root pending_del_radix;
struct radix_tree_root pinned_radix;
u64 last_inode_alloc;
@@ -266,6 +266,9 @@ struct btrfs_root {
struct btrfs_root_item root_item;
struct btrfs_key root_key;
struct btrfs_fs_info *fs_info;
struct inode *inode;
u64 objectid;
u64 last_trans;
u32 blocksize;
int ref_cows;
u32 type;
@@ -595,7 +598,7 @@ static inline u32 btrfs_key_overflow(struct btrfs_key *key)
static inline void btrfs_set_key_overflow(struct btrfs_key *key, u32 over)
{
BUG_ON(over > BTRFS_KEY_OVERFLOW_MAX);
BUG_ON(over >= BTRFS_KEY_OVERFLOW_MAX);
over = over << BTRFS_KEY_OVERFLOW_SHIFT;
key->flags = (key->flags & ~((u64)BTRFS_KEY_OVERFLOW_MASK)) | over;
}
@@ -634,7 +637,7 @@ static inline void btrfs_set_disK_key_overflow(struct btrfs_disk_key *key,
u32 over)
{
u32 flags = btrfs_disk_key_flags(key);
BUG_ON(over > BTRFS_KEY_OVERFLOW_MAX);
BUG_ON(over >= BTRFS_KEY_OVERFLOW_MAX);
over = over << BTRFS_KEY_OVERFLOW_SHIFT;
flags = (flags & ~((u64)BTRFS_KEY_OVERFLOW_MASK)) | over;
btrfs_set_disk_key_flags(key, flags);
@@ -748,6 +751,17 @@ static inline void btrfs_set_super_blocknr(struct btrfs_super_block *s, u64 val)
s->blocknr = cpu_to_le64(val);
}
static inline u64 btrfs_super_generation(struct btrfs_super_block *s)
{
return le64_to_cpu(s->generation);
}
static inline void btrfs_set_super_generation(struct btrfs_super_block *s,
u64 val)
{
s->generation = cpu_to_le64(val);
}
static inline u64 btrfs_super_root(struct btrfs_super_block *s)
{
return le64_to_cpu(s->root);