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btrfs-progs
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btrfs-progs: add balance status structures 

Signed-off-by: David Sterba <dsterba@suse.com>
master
David Sterba 2016-11-02 00:53:54 +01:00
parent 8a50dc9600
commit ad5c75708a
1 changed files with 108 additions and 0 deletions
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108
ctree.h
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@ -788,6 +788,84 @@ struct btrfs_root_ref {
__le16 name_len;
} __attribute__ ((__packed__));
struct btrfs_disk_balance_args {
/*
* profiles to operate on, single is denoted by
* BTRFS_AVAIL_ALLOC_BIT_SINGLE
*/
__le64 profiles;
/*
* usage filter
* BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N'
* BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max
*/
union {
__le64 usage;
struct {
__le32 usage_min;
__le32 usage_max;
};
};
/* devid filter */
__le64 devid;
/* devid subset filter [pstart..pend) */
__le64 pstart;
__le64 pend;
/* btrfs virtual address space subset filter [vstart..vend) */
__le64 vstart;
__le64 vend;
/*
* profile to convert to, single is denoted by
* BTRFS_AVAIL_ALLOC_BIT_SINGLE
*/
__le64 target;
/* BTRFS_BALANCE_ARGS_* */
__le64 flags;
/*
* BTRFS_BALANCE_ARGS_LIMIT with value 'limit'
* BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum
* and maximum
*/
union {
__le64 limit;
struct {
__le32 limit_min;
__le32 limit_max;
};
};
/*
* Process chunks that cross stripes_min..stripes_max devices,
* BTRFS_BALANCE_ARGS_STRIPES_RANGE
*/
__le32 stripes_min;
__le32 stripes_max;
__le64 unused[6];
} __attribute__ ((__packed__));
/*
* store balance parameters to disk so that balance can be properly
* resumed after crash or unmount
*/
struct btrfs_balance_item {
/* BTRFS_BALANCE_* */
__le64 flags;
struct btrfs_disk_balance_args data;
struct btrfs_disk_balance_args meta;
struct btrfs_disk_balance_args sys;
__le64 unused[4];
} __attribute__ ((__packed__));
#define BTRFS_FILE_EXTENT_INLINE 0
#define BTRFS_FILE_EXTENT_REG 1
#define BTRFS_FILE_EXTENT_PREALLOC 2
@ -2225,6 +2303,36 @@ BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_referenced,
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_exclusive,
struct btrfs_qgroup_limit_item, rsv_exclusive, 64);
/* btrfs_balance_item */
BTRFS_SETGET_FUNCS(balance_item_flags, struct btrfs_balance_item, flags, 64);
static inline struct btrfs_disk_balance_args* btrfs_balance_item_data(
struct extent_buffer *eb, struct btrfs_balance_item *bi)
{
unsigned long offset = (unsigned long)bi;
struct btrfs_balance_item *p;
p = (struct btrfs_balance_item *)(eb->data + offset);
return &p->data;
}
static inline struct btrfs_disk_balance_args* btrfs_balance_item_meta(
struct extent_buffer *eb, struct btrfs_balance_item *bi)
{
unsigned long offset = (unsigned long)bi;
struct btrfs_balance_item *p;
p = (struct btrfs_balance_item *)(eb->data + offset);
return &p->meta;
}
static inline struct btrfs_disk_balance_args* btrfs_balance_item_sys(
struct extent_buffer *eb, struct btrfs_balance_item *bi)
{
unsigned long offset = (unsigned long)bi;
struct btrfs_balance_item *p;
p = (struct btrfs_balance_item *)(eb->data + offset);
return &p->sys;
}
/*
* this returns the number of bytes used by the item on disk, minus the
* size of any extent headers. If a file is compressed on disk, this is