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d9a620f77e
In order to implement simple quota groups, we need to be able to associate a data extent with the subvolume that created it. Once you account for reflink, this information cannot be recovered without explicitly storing it. Options for storing it are: - a new key/item - a new extent inline ref item The former is backwards compatible, but wastes space, the latter is incompat, but is efficient in space and reuses the existing inline ref machinery, while only abusing it a tiny amount -- specifically, the new item is not a ref, per-se. Signed-off-by: Boris Burkov <boris@bur.io> Signed-off-by: David Sterba <dsterba@suse.com>
1086 lines
42 KiB
C
1086 lines
42 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BTRFS_ACCESSORS_H
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#define BTRFS_ACCESSORS_H
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#include <linux/stddef.h>
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#include <asm/unaligned.h>
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struct btrfs_map_token {
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struct extent_buffer *eb;
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char *kaddr;
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unsigned long offset;
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};
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void btrfs_init_map_token(struct btrfs_map_token *token, struct extent_buffer *eb);
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/*
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* Some macros to generate set/get functions for the struct fields. This
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* assumes there is a lefoo_to_cpu for every type, so lets make a simple one
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* for u8:
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*/
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#define le8_to_cpu(v) (v)
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#define cpu_to_le8(v) (v)
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#define __le8 u8
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static inline u8 get_unaligned_le8(const void *p)
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{
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return *(u8 *)p;
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}
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static inline void put_unaligned_le8(u8 val, void *p)
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{
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*(u8 *)p = val;
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}
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#define read_eb_member(eb, ptr, type, member, result) (\
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read_extent_buffer(eb, (char *)(result), \
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((unsigned long)(ptr)) + \
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offsetof(type, member), \
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sizeof_field(type, member)))
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#define write_eb_member(eb, ptr, type, member, result) (\
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write_extent_buffer(eb, (char *)(result), \
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((unsigned long)(ptr)) + \
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offsetof(type, member), \
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sizeof_field(type, member)))
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#define DECLARE_BTRFS_SETGET_BITS(bits) \
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u##bits btrfs_get_token_##bits(struct btrfs_map_token *token, \
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const void *ptr, unsigned long off); \
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void btrfs_set_token_##bits(struct btrfs_map_token *token, \
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const void *ptr, unsigned long off, \
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u##bits val); \
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u##bits btrfs_get_##bits(const struct extent_buffer *eb, \
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const void *ptr, unsigned long off); \
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void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr, \
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unsigned long off, u##bits val);
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DECLARE_BTRFS_SETGET_BITS(8)
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DECLARE_BTRFS_SETGET_BITS(16)
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DECLARE_BTRFS_SETGET_BITS(32)
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DECLARE_BTRFS_SETGET_BITS(64)
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#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
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static inline u##bits btrfs_##name(const struct extent_buffer *eb, \
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const type *s) \
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{ \
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static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
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return btrfs_get_##bits(eb, s, offsetof(type, member)); \
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} \
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static inline void btrfs_set_##name(const struct extent_buffer *eb, type *s, \
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u##bits val) \
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{ \
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static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
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btrfs_set_##bits(eb, s, offsetof(type, member), val); \
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} \
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static inline u##bits btrfs_token_##name(struct btrfs_map_token *token, \
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const type *s) \
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{ \
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static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
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return btrfs_get_token_##bits(token, s, offsetof(type, member));\
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} \
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static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\
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type *s, u##bits val) \
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{ \
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static_assert(sizeof(u##bits) == sizeof_field(type, member)); \
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btrfs_set_token_##bits(token, s, offsetof(type, member), val); \
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}
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#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
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static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
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{ \
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const type *p = page_address(eb->pages[0]) + \
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offset_in_page(eb->start); \
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return get_unaligned_le##bits(&p->member); \
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} \
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static inline void btrfs_set_##name(const struct extent_buffer *eb, \
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u##bits val) \
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{ \
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type *p = page_address(eb->pages[0]) + offset_in_page(eb->start); \
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put_unaligned_le##bits(val, &p->member); \
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}
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#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
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static inline u##bits btrfs_##name(const type *s) \
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{ \
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return get_unaligned_le##bits(&s->member); \
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} \
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static inline void btrfs_set_##name(type *s, u##bits val) \
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{ \
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put_unaligned_le##bits(val, &s->member); \
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}
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static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb,
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struct btrfs_dev_item *s)
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{
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static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes));
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return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes));
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}
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static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb,
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struct btrfs_dev_item *s,
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u64 val)
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{
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static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes));
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WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize));
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btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val);
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}
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BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64);
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BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64);
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BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32);
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BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32);
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BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, start_offset, 64);
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BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32);
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BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64);
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BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32);
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BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8);
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BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8);
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BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item,
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total_bytes, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item,
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bytes_used, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item,
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io_align, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item,
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io_width, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item,
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sector_size, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, dev_group, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item,
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seek_speed, 8);
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BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item,
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bandwidth, 8);
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BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item,
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generation, 64);
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static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d)
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{
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return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid);
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}
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static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d)
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{
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return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid);
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}
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BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64);
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BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64);
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BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64);
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BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32);
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BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32);
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BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32);
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BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64);
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BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16);
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BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16);
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BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64);
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BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64);
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static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s)
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{
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return (char *)s + offsetof(struct btrfs_stripe, dev_uuid);
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}
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk,
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stripe_len, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, io_align, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, io_width, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk,
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sector_size, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk,
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num_stripes, 16);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk,
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sub_stripes, 16);
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BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64);
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static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, int nr)
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{
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unsigned long offset = (unsigned long)c;
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offset += offsetof(struct btrfs_chunk, stripe);
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offset += nr * sizeof(struct btrfs_stripe);
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return (struct btrfs_stripe *)offset;
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}
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static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr)
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{
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return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr));
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}
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static inline u64 btrfs_stripe_offset_nr(const struct extent_buffer *eb,
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struct btrfs_chunk *c, int nr)
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{
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return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr));
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}
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static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb,
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struct btrfs_chunk *c, int nr,
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u64 val)
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{
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btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val);
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}
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static inline u64 btrfs_stripe_devid_nr(const struct extent_buffer *eb,
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struct btrfs_chunk *c, int nr)
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{
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return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
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}
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static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb,
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struct btrfs_chunk *c, int nr,
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u64 val)
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{
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btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val);
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}
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/* struct btrfs_block_group_item */
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BTRFS_SETGET_STACK_FUNCS(stack_block_group_used, struct btrfs_block_group_item,
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used, 64);
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BTRFS_SETGET_FUNCS(block_group_used, struct btrfs_block_group_item, used, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_block_group_chunk_objectid,
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struct btrfs_block_group_item, chunk_objectid, 64);
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BTRFS_SETGET_FUNCS(block_group_chunk_objectid,
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struct btrfs_block_group_item, chunk_objectid, 64);
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BTRFS_SETGET_FUNCS(block_group_flags, struct btrfs_block_group_item, flags, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_block_group_flags,
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struct btrfs_block_group_item, flags, 64);
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/* struct btrfs_free_space_info */
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BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info,
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extent_count, 32);
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BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32);
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/* struct btrfs_inode_ref */
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BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
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BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_index, struct btrfs_inode_ref, index, 64);
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/* struct btrfs_inode_extref */
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BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref,
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parent_objectid, 64);
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BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref,
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name_len, 16);
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BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64);
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/* struct btrfs_inode_item */
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BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64);
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BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64);
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BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64);
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BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64);
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BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64);
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BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64);
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BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
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BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
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BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
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BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
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BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64);
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BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item,
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generation, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item,
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sequence, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item,
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transid, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, nbytes, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item,
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block_group, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64);
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BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
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BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32);
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BTRFS_SETGET_FUNCS(stripe_extent_encoding, struct btrfs_stripe_extent, encoding, 8);
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BTRFS_SETGET_FUNCS(raid_stride_devid, struct btrfs_raid_stride, devid, 64);
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BTRFS_SETGET_FUNCS(raid_stride_physical, struct btrfs_raid_stride, physical, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_stripe_extent_encoding,
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struct btrfs_stripe_extent, encoding, 8);
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BTRFS_SETGET_STACK_FUNCS(stack_raid_stride_devid, struct btrfs_raid_stride, devid, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_raid_stride_physical, struct btrfs_raid_stride, physical, 64);
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/* struct btrfs_dev_extent */
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BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, chunk_tree, 64);
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BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent,
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chunk_objectid, 64);
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BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent,
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chunk_offset, 64);
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BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_tree, struct btrfs_dev_extent,
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chunk_tree, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_objectid, struct btrfs_dev_extent,
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chunk_objectid, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_chunk_offset, struct btrfs_dev_extent,
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chunk_offset, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_length, struct btrfs_dev_extent, length, 64);
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BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64);
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BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, generation, 64);
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BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64);
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|
|
BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8);
|
|
|
|
static inline void btrfs_tree_block_key(const struct extent_buffer *eb,
|
|
struct btrfs_tree_block_info *item,
|
|
struct btrfs_disk_key *key)
|
|
{
|
|
read_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
|
|
}
|
|
|
|
static inline void btrfs_set_tree_block_key(const struct extent_buffer *eb,
|
|
struct btrfs_tree_block_info *item,
|
|
struct btrfs_disk_key *key)
|
|
{
|
|
write_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
|
|
}
|
|
|
|
BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, root, 64);
|
|
BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref,
|
|
objectid, 64);
|
|
BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref,
|
|
offset, 64);
|
|
BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, count, 32);
|
|
|
|
BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, count, 32);
|
|
|
|
BTRFS_SETGET_FUNCS(extent_owner_ref_root_id, struct btrfs_extent_owner_ref,
|
|
root_id, 64);
|
|
|
|
BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref,
|
|
type, 8);
|
|
BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref,
|
|
offset, 64);
|
|
|
|
static inline u32 btrfs_extent_inline_ref_size(int type)
|
|
{
|
|
if (type == BTRFS_TREE_BLOCK_REF_KEY ||
|
|
type == BTRFS_SHARED_BLOCK_REF_KEY)
|
|
return sizeof(struct btrfs_extent_inline_ref);
|
|
if (type == BTRFS_SHARED_DATA_REF_KEY)
|
|
return sizeof(struct btrfs_shared_data_ref) +
|
|
sizeof(struct btrfs_extent_inline_ref);
|
|
if (type == BTRFS_EXTENT_DATA_REF_KEY)
|
|
return sizeof(struct btrfs_extent_data_ref) +
|
|
offsetof(struct btrfs_extent_inline_ref, offset);
|
|
if (type == BTRFS_EXTENT_OWNER_REF_KEY)
|
|
return sizeof(struct btrfs_extent_inline_ref);
|
|
return 0;
|
|
}
|
|
|
|
/* struct btrfs_node */
|
|
BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
|
|
BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, blockptr, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr,
|
|
generation, 64);
|
|
|
|
static inline u64 btrfs_node_blockptr(const struct extent_buffer *eb, int nr)
|
|
{
|
|
unsigned long ptr;
|
|
|
|
ptr = offsetof(struct btrfs_node, ptrs) +
|
|
sizeof(struct btrfs_key_ptr) * nr;
|
|
return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr);
|
|
}
|
|
|
|
static inline void btrfs_set_node_blockptr(const struct extent_buffer *eb,
|
|
int nr, u64 val)
|
|
{
|
|
unsigned long ptr;
|
|
|
|
ptr = offsetof(struct btrfs_node, ptrs) +
|
|
sizeof(struct btrfs_key_ptr) * nr;
|
|
btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
|
|
}
|
|
|
|
static inline u64 btrfs_node_ptr_generation(const struct extent_buffer *eb, int nr)
|
|
{
|
|
unsigned long ptr;
|
|
|
|
ptr = offsetof(struct btrfs_node, ptrs) +
|
|
sizeof(struct btrfs_key_ptr) * nr;
|
|
return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr);
|
|
}
|
|
|
|
static inline void btrfs_set_node_ptr_generation(const struct extent_buffer *eb,
|
|
int nr, u64 val)
|
|
{
|
|
unsigned long ptr;
|
|
|
|
ptr = offsetof(struct btrfs_node, ptrs) +
|
|
sizeof(struct btrfs_key_ptr) * nr;
|
|
btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val);
|
|
}
|
|
|
|
static inline unsigned long btrfs_node_key_ptr_offset(const struct extent_buffer *eb, int nr)
|
|
{
|
|
return offsetof(struct btrfs_node, ptrs) +
|
|
sizeof(struct btrfs_key_ptr) * nr;
|
|
}
|
|
|
|
void btrfs_node_key(const struct extent_buffer *eb,
|
|
struct btrfs_disk_key *disk_key, int nr);
|
|
|
|
static inline void btrfs_set_node_key(const struct extent_buffer *eb,
|
|
struct btrfs_disk_key *disk_key, int nr)
|
|
{
|
|
unsigned long ptr;
|
|
|
|
ptr = btrfs_node_key_ptr_offset(eb, nr);
|
|
write_eb_member(eb, (struct btrfs_key_ptr *)ptr,
|
|
struct btrfs_key_ptr, key, disk_key);
|
|
}
|
|
|
|
/* struct btrfs_item */
|
|
BTRFS_SETGET_FUNCS(raw_item_offset, struct btrfs_item, offset, 32);
|
|
BTRFS_SETGET_FUNCS(raw_item_size, struct btrfs_item, size, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32);
|
|
|
|
static inline unsigned long btrfs_item_nr_offset(const struct extent_buffer *eb, int nr)
|
|
{
|
|
return offsetof(struct btrfs_leaf, items) +
|
|
sizeof(struct btrfs_item) * nr;
|
|
}
|
|
|
|
static inline struct btrfs_item *btrfs_item_nr(const struct extent_buffer *eb, int nr)
|
|
{
|
|
return (struct btrfs_item *)btrfs_item_nr_offset(eb, nr);
|
|
}
|
|
|
|
#define BTRFS_ITEM_SETGET_FUNCS(member) \
|
|
static inline u32 btrfs_item_##member(const struct extent_buffer *eb, int slot) \
|
|
{ \
|
|
return btrfs_raw_item_##member(eb, btrfs_item_nr(eb, slot)); \
|
|
} \
|
|
static inline void btrfs_set_item_##member(const struct extent_buffer *eb, \
|
|
int slot, u32 val) \
|
|
{ \
|
|
btrfs_set_raw_item_##member(eb, btrfs_item_nr(eb, slot), val); \
|
|
} \
|
|
static inline u32 btrfs_token_item_##member(struct btrfs_map_token *token, \
|
|
int slot) \
|
|
{ \
|
|
struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \
|
|
return btrfs_token_raw_item_##member(token, item); \
|
|
} \
|
|
static inline void btrfs_set_token_item_##member(struct btrfs_map_token *token, \
|
|
int slot, u32 val) \
|
|
{ \
|
|
struct btrfs_item *item = btrfs_item_nr(token->eb, slot); \
|
|
btrfs_set_token_raw_item_##member(token, item, val); \
|
|
}
|
|
|
|
BTRFS_ITEM_SETGET_FUNCS(offset)
|
|
BTRFS_ITEM_SETGET_FUNCS(size);
|
|
|
|
static inline u32 btrfs_item_data_end(const struct extent_buffer *eb, int nr)
|
|
{
|
|
return btrfs_item_offset(eb, nr) + btrfs_item_size(eb, nr);
|
|
}
|
|
|
|
static inline void btrfs_item_key(const struct extent_buffer *eb,
|
|
struct btrfs_disk_key *disk_key, int nr)
|
|
{
|
|
struct btrfs_item *item = btrfs_item_nr(eb, nr);
|
|
|
|
read_eb_member(eb, item, struct btrfs_item, key, disk_key);
|
|
}
|
|
|
|
static inline void btrfs_set_item_key(struct extent_buffer *eb,
|
|
struct btrfs_disk_key *disk_key, int nr)
|
|
{
|
|
struct btrfs_item *item = btrfs_item_nr(eb, nr);
|
|
|
|
write_eb_member(eb, item, struct btrfs_item, key, disk_key);
|
|
}
|
|
|
|
BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64);
|
|
|
|
/* struct btrfs_root_ref */
|
|
BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64);
|
|
BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64);
|
|
BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_root_ref_dirid, struct btrfs_root_ref, dirid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_root_ref_sequence, struct btrfs_root_ref, sequence, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_root_ref_name_len, struct btrfs_root_ref, name_len, 16);
|
|
|
|
/* struct btrfs_dir_item */
|
|
BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
|
|
BTRFS_SETGET_FUNCS(dir_flags, struct btrfs_dir_item, type, 8);
|
|
BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16);
|
|
BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dir_flags, struct btrfs_dir_item, type, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, data_len, 16);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, name_len, 16);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, transid, 64);
|
|
|
|
static inline u8 btrfs_dir_ftype(const struct extent_buffer *eb,
|
|
const struct btrfs_dir_item *item)
|
|
{
|
|
return btrfs_dir_flags_to_ftype(btrfs_dir_flags(eb, item));
|
|
}
|
|
|
|
static inline u8 btrfs_stack_dir_ftype(const struct btrfs_dir_item *item)
|
|
{
|
|
return btrfs_dir_flags_to_ftype(btrfs_stack_dir_flags(item));
|
|
}
|
|
|
|
static inline void btrfs_dir_item_key(const struct extent_buffer *eb,
|
|
const struct btrfs_dir_item *item,
|
|
struct btrfs_disk_key *key)
|
|
{
|
|
read_eb_member(eb, item, struct btrfs_dir_item, location, key);
|
|
}
|
|
|
|
static inline void btrfs_set_dir_item_key(struct extent_buffer *eb,
|
|
struct btrfs_dir_item *item,
|
|
const struct btrfs_disk_key *key)
|
|
{
|
|
write_eb_member(eb, item, struct btrfs_dir_item, location, key);
|
|
}
|
|
|
|
BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header,
|
|
num_entries, 64);
|
|
BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header,
|
|
num_bitmaps, 64);
|
|
BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header,
|
|
generation, 64);
|
|
|
|
static inline void btrfs_free_space_key(const struct extent_buffer *eb,
|
|
const struct btrfs_free_space_header *h,
|
|
struct btrfs_disk_key *key)
|
|
{
|
|
read_eb_member(eb, h, struct btrfs_free_space_header, location, key);
|
|
}
|
|
|
|
static inline void btrfs_set_free_space_key(struct extent_buffer *eb,
|
|
struct btrfs_free_space_header *h,
|
|
const struct btrfs_disk_key *key)
|
|
{
|
|
write_eb_member(eb, h, struct btrfs_free_space_header, location, key);
|
|
}
|
|
|
|
/* struct btrfs_disk_key */
|
|
BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, objectid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8);
|
|
|
|
#ifdef __LITTLE_ENDIAN
|
|
|
|
/*
|
|
* Optimized helpers for little-endian architectures where CPU and on-disk
|
|
* structures have the same endianness and we can skip conversions.
|
|
*/
|
|
|
|
static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu_key,
|
|
const struct btrfs_disk_key *disk_key)
|
|
{
|
|
memcpy(cpu_key, disk_key, sizeof(struct btrfs_key));
|
|
}
|
|
|
|
static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk_key,
|
|
const struct btrfs_key *cpu_key)
|
|
{
|
|
memcpy(disk_key, cpu_key, sizeof(struct btrfs_key));
|
|
}
|
|
|
|
static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
|
|
struct btrfs_key *cpu_key, int nr)
|
|
{
|
|
struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
|
|
|
|
btrfs_node_key(eb, disk_key, nr);
|
|
}
|
|
|
|
static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
|
|
struct btrfs_key *cpu_key, int nr)
|
|
{
|
|
struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
|
|
|
|
btrfs_item_key(eb, disk_key, nr);
|
|
}
|
|
|
|
static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
|
|
const struct btrfs_dir_item *item,
|
|
struct btrfs_key *cpu_key)
|
|
{
|
|
struct btrfs_disk_key *disk_key = (struct btrfs_disk_key *)cpu_key;
|
|
|
|
btrfs_dir_item_key(eb, item, disk_key);
|
|
}
|
|
|
|
#else
|
|
|
|
static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
|
|
const struct btrfs_disk_key *disk)
|
|
{
|
|
cpu->offset = le64_to_cpu(disk->offset);
|
|
cpu->type = disk->type;
|
|
cpu->objectid = le64_to_cpu(disk->objectid);
|
|
}
|
|
|
|
static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
|
|
const struct btrfs_key *cpu)
|
|
{
|
|
disk->offset = cpu_to_le64(cpu->offset);
|
|
disk->type = cpu->type;
|
|
disk->objectid = cpu_to_le64(cpu->objectid);
|
|
}
|
|
|
|
static inline void btrfs_node_key_to_cpu(const struct extent_buffer *eb,
|
|
struct btrfs_key *key, int nr)
|
|
{
|
|
struct btrfs_disk_key disk_key;
|
|
|
|
btrfs_node_key(eb, &disk_key, nr);
|
|
btrfs_disk_key_to_cpu(key, &disk_key);
|
|
}
|
|
|
|
static inline void btrfs_item_key_to_cpu(const struct extent_buffer *eb,
|
|
struct btrfs_key *key, int nr)
|
|
{
|
|
struct btrfs_disk_key disk_key;
|
|
|
|
btrfs_item_key(eb, &disk_key, nr);
|
|
btrfs_disk_key_to_cpu(key, &disk_key);
|
|
}
|
|
|
|
static inline void btrfs_dir_item_key_to_cpu(const struct extent_buffer *eb,
|
|
const struct btrfs_dir_item *item,
|
|
struct btrfs_key *key)
|
|
{
|
|
struct btrfs_disk_key disk_key;
|
|
|
|
btrfs_dir_item_key(eb, item, &disk_key);
|
|
btrfs_disk_key_to_cpu(key, &disk_key);
|
|
}
|
|
|
|
#endif
|
|
|
|
/* struct btrfs_header */
|
|
BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
|
|
BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, generation, 64);
|
|
BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64);
|
|
BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32);
|
|
BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64);
|
|
BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header,
|
|
generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, nritems, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64);
|
|
|
|
static inline int btrfs_header_flag(const struct extent_buffer *eb, u64 flag)
|
|
{
|
|
return (btrfs_header_flags(eb) & flag) == flag;
|
|
}
|
|
|
|
static inline void btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
|
|
{
|
|
u64 flags = btrfs_header_flags(eb);
|
|
|
|
btrfs_set_header_flags(eb, flags | flag);
|
|
}
|
|
|
|
static inline void btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
|
|
{
|
|
u64 flags = btrfs_header_flags(eb);
|
|
|
|
btrfs_set_header_flags(eb, flags & ~flag);
|
|
}
|
|
|
|
static inline int btrfs_header_backref_rev(const struct extent_buffer *eb)
|
|
{
|
|
u64 flags = btrfs_header_flags(eb);
|
|
|
|
return flags >> BTRFS_BACKREF_REV_SHIFT;
|
|
}
|
|
|
|
static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, int rev)
|
|
{
|
|
u64 flags = btrfs_header_flags(eb);
|
|
|
|
flags &= ~BTRFS_BACKREF_REV_MASK;
|
|
flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT;
|
|
btrfs_set_header_flags(eb, flags);
|
|
}
|
|
|
|
static inline int btrfs_is_leaf(const struct extent_buffer *eb)
|
|
{
|
|
return btrfs_header_level(eb) == 0;
|
|
}
|
|
|
|
/* struct btrfs_root_item */
|
|
BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, generation, 64);
|
|
BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32);
|
|
BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64);
|
|
BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_drop_level, struct btrfs_root_item, drop_level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item,
|
|
last_snapshot, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item,
|
|
generation_v2, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, ctransid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, otransid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, stransid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, rtransid, 64);
|
|
|
|
/* struct btrfs_root_backup */
|
|
BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup,
|
|
tree_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup,
|
|
tree_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup,
|
|
tree_root_level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup,
|
|
chunk_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup,
|
|
chunk_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup,
|
|
chunk_root_level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup,
|
|
extent_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup,
|
|
extent_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup,
|
|
extent_root_level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup,
|
|
fs_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup,
|
|
fs_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup,
|
|
fs_root_level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup,
|
|
dev_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup,
|
|
dev_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup,
|
|
dev_root_level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup,
|
|
csum_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup,
|
|
csum_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup,
|
|
csum_root_level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup,
|
|
total_bytes, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup,
|
|
bytes_used, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup,
|
|
num_devices, 64);
|
|
|
|
/* struct btrfs_balance_item */
|
|
BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64);
|
|
|
|
static inline void btrfs_balance_data(const struct extent_buffer *eb,
|
|
const struct btrfs_balance_item *bi,
|
|
struct btrfs_disk_balance_args *ba)
|
|
{
|
|
read_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
|
|
}
|
|
|
|
static inline void btrfs_set_balance_data(struct extent_buffer *eb,
|
|
struct btrfs_balance_item *bi,
|
|
const struct btrfs_disk_balance_args *ba)
|
|
{
|
|
write_eb_member(eb, bi, struct btrfs_balance_item, data, ba);
|
|
}
|
|
|
|
static inline void btrfs_balance_meta(const struct extent_buffer *eb,
|
|
const struct btrfs_balance_item *bi,
|
|
struct btrfs_disk_balance_args *ba)
|
|
{
|
|
read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
|
|
}
|
|
|
|
static inline void btrfs_set_balance_meta(struct extent_buffer *eb,
|
|
struct btrfs_balance_item *bi,
|
|
const struct btrfs_disk_balance_args *ba)
|
|
{
|
|
write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba);
|
|
}
|
|
|
|
static inline void btrfs_balance_sys(const struct extent_buffer *eb,
|
|
const struct btrfs_balance_item *bi,
|
|
struct btrfs_disk_balance_args *ba)
|
|
{
|
|
read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
|
|
}
|
|
|
|
static inline void btrfs_set_balance_sys(struct extent_buffer *eb,
|
|
struct btrfs_balance_item *bi,
|
|
const struct btrfs_disk_balance_args *ba)
|
|
{
|
|
write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba);
|
|
}
|
|
|
|
static inline void btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu,
|
|
const struct btrfs_disk_balance_args *disk)
|
|
{
|
|
memset(cpu, 0, sizeof(*cpu));
|
|
|
|
cpu->profiles = le64_to_cpu(disk->profiles);
|
|
cpu->usage = le64_to_cpu(disk->usage);
|
|
cpu->devid = le64_to_cpu(disk->devid);
|
|
cpu->pstart = le64_to_cpu(disk->pstart);
|
|
cpu->pend = le64_to_cpu(disk->pend);
|
|
cpu->vstart = le64_to_cpu(disk->vstart);
|
|
cpu->vend = le64_to_cpu(disk->vend);
|
|
cpu->target = le64_to_cpu(disk->target);
|
|
cpu->flags = le64_to_cpu(disk->flags);
|
|
cpu->limit = le64_to_cpu(disk->limit);
|
|
cpu->stripes_min = le32_to_cpu(disk->stripes_min);
|
|
cpu->stripes_max = le32_to_cpu(disk->stripes_max);
|
|
}
|
|
|
|
static inline void btrfs_cpu_balance_args_to_disk(
|
|
struct btrfs_disk_balance_args *disk,
|
|
const struct btrfs_balance_args *cpu)
|
|
{
|
|
memset(disk, 0, sizeof(*disk));
|
|
|
|
disk->profiles = cpu_to_le64(cpu->profiles);
|
|
disk->usage = cpu_to_le64(cpu->usage);
|
|
disk->devid = cpu_to_le64(cpu->devid);
|
|
disk->pstart = cpu_to_le64(cpu->pstart);
|
|
disk->pend = cpu_to_le64(cpu->pend);
|
|
disk->vstart = cpu_to_le64(cpu->vstart);
|
|
disk->vend = cpu_to_le64(cpu->vend);
|
|
disk->target = cpu_to_le64(cpu->target);
|
|
disk->flags = cpu_to_le64(cpu->flags);
|
|
disk->limit = cpu_to_le64(cpu->limit);
|
|
disk->stripes_min = cpu_to_le32(cpu->stripes_min);
|
|
disk->stripes_max = cpu_to_le32(cpu->stripes_max);
|
|
}
|
|
|
|
/* struct btrfs_super_block */
|
|
BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
|
|
generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_sys_array_size,
|
|
struct btrfs_super_block, sys_chunk_array_size, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation,
|
|
struct btrfs_super_block, chunk_root_generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
|
|
root_level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block,
|
|
chunk_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block,
|
|
chunk_root_level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, log_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block,
|
|
log_root_level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
|
|
total_bytes, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
|
|
bytes_used, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block,
|
|
sectorsize, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block,
|
|
nodesize, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block,
|
|
stripesize, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block,
|
|
root_dir_objectid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block,
|
|
num_devices, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block,
|
|
compat_flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block,
|
|
compat_ro_flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block,
|
|
incompat_flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block,
|
|
csum_type, 16);
|
|
BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block,
|
|
cache_generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
|
|
uuid_tree_generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_nr_global_roots, struct btrfs_super_block,
|
|
nr_global_roots, 64);
|
|
|
|
/* struct btrfs_file_extent_item */
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item,
|
|
type, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr,
|
|
struct btrfs_file_extent_item, disk_bytenr, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset,
|
|
struct btrfs_file_extent_item, offset, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation,
|
|
struct btrfs_file_extent_item, generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes,
|
|
struct btrfs_file_extent_item, num_bytes, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes,
|
|
struct btrfs_file_extent_item, ram_bytes, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes,
|
|
struct btrfs_file_extent_item, disk_num_bytes, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression,
|
|
struct btrfs_file_extent_item, compression, 8);
|
|
|
|
|
|
BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8);
|
|
BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
|
|
disk_bytenr, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item,
|
|
generation, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item,
|
|
disk_num_bytes, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item,
|
|
offset, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
|
|
num_bytes, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item,
|
|
ram_bytes, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item,
|
|
compression, 8);
|
|
BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
|
|
encryption, 8);
|
|
BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
|
|
other_encoding, 16);
|
|
|
|
/* btrfs_qgroup_status_item */
|
|
BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item,
|
|
generation, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item,
|
|
version, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item,
|
|
flags, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item,
|
|
rescan, 64);
|
|
|
|
/* btrfs_qgroup_info_item */
|
|
BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item,
|
|
generation, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item,
|
|
rfer_cmpr, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item,
|
|
excl_cmpr, 64);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation,
|
|
struct btrfs_qgroup_info_item, generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item,
|
|
rfer, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr,
|
|
struct btrfs_qgroup_info_item, rfer_cmpr, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item,
|
|
excl, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr,
|
|
struct btrfs_qgroup_info_item, excl_cmpr, 64);
|
|
|
|
/* btrfs_qgroup_limit_item */
|
|
BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, flags, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item,
|
|
max_rfer, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item,
|
|
max_excl, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item,
|
|
rsv_rfer, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item,
|
|
rsv_excl, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_flags,
|
|
struct btrfs_qgroup_limit_item, flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_rfer,
|
|
struct btrfs_qgroup_limit_item, max_rfer, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_excl,
|
|
struct btrfs_qgroup_limit_item, max_excl, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_rfer,
|
|
struct btrfs_qgroup_limit_item, rsv_rfer, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_excl,
|
|
struct btrfs_qgroup_limit_item, rsv_excl, 64);
|
|
|
|
/* btrfs_dev_replace_item */
|
|
BTRFS_SETGET_FUNCS(dev_replace_src_devid,
|
|
struct btrfs_dev_replace_item, src_devid, 64);
|
|
BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode,
|
|
struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode,
|
|
64);
|
|
BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item,
|
|
replace_state, 64);
|
|
BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item,
|
|
time_started, 64);
|
|
BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item,
|
|
time_stopped, 64);
|
|
BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item,
|
|
num_write_errors, 64);
|
|
BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors,
|
|
struct btrfs_dev_replace_item, num_uncorrectable_read_errors,
|
|
64);
|
|
BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item,
|
|
cursor_left, 64);
|
|
BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item,
|
|
cursor_right, 64);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid,
|
|
struct btrfs_dev_replace_item, src_devid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode,
|
|
struct btrfs_dev_replace_item,
|
|
cont_reading_from_srcdev_mode, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state,
|
|
struct btrfs_dev_replace_item, replace_state, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started,
|
|
struct btrfs_dev_replace_item, time_started, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped,
|
|
struct btrfs_dev_replace_item, time_stopped, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors,
|
|
struct btrfs_dev_replace_item, num_write_errors, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors,
|
|
struct btrfs_dev_replace_item,
|
|
num_uncorrectable_read_errors, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left,
|
|
struct btrfs_dev_replace_item, cursor_left, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right,
|
|
struct btrfs_dev_replace_item, cursor_right, 64);
|
|
|
|
/* btrfs_verity_descriptor_item */
|
|
BTRFS_SETGET_FUNCS(verity_descriptor_encryption, struct btrfs_verity_descriptor_item,
|
|
encryption, 8);
|
|
BTRFS_SETGET_FUNCS(verity_descriptor_size, struct btrfs_verity_descriptor_item,
|
|
size, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_encryption,
|
|
struct btrfs_verity_descriptor_item, encryption, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_verity_descriptor_size,
|
|
struct btrfs_verity_descriptor_item, size, 64);
|
|
|
|
/* Cast into the data area of the leaf. */
|
|
#define btrfs_item_ptr(leaf, slot, type) \
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((type *)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot)))
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#define btrfs_item_ptr_offset(leaf, slot) \
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((unsigned long)(btrfs_item_nr_offset(leaf, 0) + btrfs_item_offset(leaf, slot)))
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#endif
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