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Commit 2b48966a authored by David Sterba's avatar David Sterba
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btrfs: constify extent_buffer in the API functions 

There are many helpers around extent buffers, found in extent_io.h and
ctree.h. Most of them can be converted to take constified eb as there
are no changes to the extent buffer structure itself but rather the
pages.
Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent db3756c8
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Showing with 63 additions and 55 deletions
fs/btrfs/ctree.h
View file @ 2b48966a
...@@ -1384,7 +1384,7 @@ void btrfs_set_token_##bits(struct btrfs_map_token *token, \ ...@@ -1384,7 +1384,7 @@ void btrfs_set_token_##bits(struct btrfs_map_token *token, \
u##bits val); \ u##bits val); \
u##bits btrfs_get_##bits(const struct extent_buffer *eb, \ u##bits btrfs_get_##bits(const struct extent_buffer *eb, \
const void *ptr, unsigned long off); \ const void *ptr, unsigned long off); \
void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr, \
unsigned long off, u##bits val); unsigned long off, u##bits val);
DECLARE_BTRFS_SETGET_BITS(8) DECLARE_BTRFS_SETGET_BITS(8)
...@@ -1399,7 +1399,7 @@ static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ ...@@ -1399,7 +1399,7 @@ static inline u##bits btrfs_##name(const struct extent_buffer *eb, \
BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
return btrfs_get_##bits(eb, s, offsetof(type, member)); \ return btrfs_get_##bits(eb, s, offsetof(type, member)); \
} \ } \
static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ static inline void btrfs_set_##name(const struct extent_buffer *eb, type *s, \
u##bits val) \ u##bits val) \
{ \ { \
BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \
...@@ -1425,7 +1425,7 @@ static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ ...@@ -1425,7 +1425,7 @@ static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
u##bits res = le##bits##_to_cpu(p->member); \ u##bits res = le##bits##_to_cpu(p->member); \
return res; \ return res; \
} \ } \
static inline void btrfs_set_##name(struct extent_buffer *eb, \ static inline void btrfs_set_##name(const struct extent_buffer *eb, \
u##bits val) \ u##bits val) \
{ \ { \
type *p = page_address(eb->pages[0]); \ type *p = page_address(eb->pages[0]); \
...@@ -1443,7 +1443,7 @@ static inline void btrfs_set_##name(type *s, u##bits val) \ ...@@ -1443,7 +1443,7 @@ static inline void btrfs_set_##name(type *s, u##bits val) \
} }
static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb, static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb,
struct btrfs_dev_item *s) struct btrfs_dev_item *s)
{ {
BUILD_BUG_ON(sizeof(u64) != BUILD_BUG_ON(sizeof(u64) !=
...@@ -1451,7 +1451,7 @@ static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb, ...@@ -1451,7 +1451,7 @@ static inline u64 btrfs_device_total_bytes(struct extent_buffer *eb,
return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item,
total_bytes)); total_bytes));
} }
static inline void btrfs_set_device_total_bytes(struct extent_buffer *eb, static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb,
struct btrfs_dev_item *s, struct btrfs_dev_item *s,
u64 val) u64 val)
{ {
...@@ -1555,13 +1555,13 @@ static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) ...@@ -1555,13 +1555,13 @@ static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr)
return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr));
} }
static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, static inline u64 btrfs_stripe_offset_nr(const struct extent_buffer *eb,
struct btrfs_chunk *c, int nr) struct btrfs_chunk *c, int nr)
{ {
return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr));
} }
static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, static inline u64 btrfs_stripe_devid_nr(const struct extent_buffer *eb,
struct btrfs_chunk *c, int nr) struct btrfs_chunk *c, int nr)
{ {
return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
...@@ -1648,14 +1648,14 @@ BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); ...@@ -1648,14 +1648,14 @@ BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64);
BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8);
static inline void btrfs_tree_block_key(struct extent_buffer *eb, static inline void btrfs_tree_block_key(const struct extent_buffer *eb,
struct btrfs_tree_block_info *item, struct btrfs_tree_block_info *item,
struct btrfs_disk_key *key) struct btrfs_disk_key *key)
{ {
read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); read_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
} }
static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, static inline void btrfs_set_tree_block_key(const struct extent_buffer *eb,
struct btrfs_tree_block_info *item, struct btrfs_tree_block_info *item,
struct btrfs_disk_key *key) struct btrfs_disk_key *key)
{ {
...@@ -1701,7 +1701,7 @@ BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, ...@@ -1701,7 +1701,7 @@ BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr,
BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr,
generation, 64); generation, 64);
static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) static inline u64 btrfs_node_blockptr(const struct extent_buffer *eb, int nr)
{ {
unsigned long ptr; unsigned long ptr;
ptr = offsetof(struct btrfs_node, ptrs) + ptr = offsetof(struct btrfs_node, ptrs) +
...@@ -1709,7 +1709,7 @@ static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) ...@@ -1709,7 +1709,7 @@ static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr)
return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr);
} }
static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, static inline void btrfs_set_node_blockptr(const struct extent_buffer *eb,
int nr, u64 val) int nr, u64 val)
{ {
unsigned long ptr; unsigned long ptr;
...@@ -1718,7 +1718,7 @@ static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, ...@@ -1718,7 +1718,7 @@ static inline void btrfs_set_node_blockptr(struct extent_buffer *eb,
btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
} }
static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) static inline u64 btrfs_node_ptr_generation(const struct extent_buffer *eb, int nr)
{ {
unsigned long ptr; unsigned long ptr;
ptr = offsetof(struct btrfs_node, ptrs) + ptr = offsetof(struct btrfs_node, ptrs) +
...@@ -1726,7 +1726,7 @@ static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) ...@@ -1726,7 +1726,7 @@ static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr)
return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr);
} }
static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, static inline void btrfs_set_node_ptr_generation(const struct extent_buffer *eb,
int nr, u64 val) int nr, u64 val)
{ {
unsigned long ptr; unsigned long ptr;
...@@ -1744,7 +1744,7 @@ static inline unsigned long btrfs_node_key_ptr_offset(int nr) ...@@ -1744,7 +1744,7 @@ static inline unsigned long btrfs_node_key_ptr_offset(int nr)
void btrfs_node_key(const struct extent_buffer *eb, void btrfs_node_key(const struct extent_buffer *eb,
struct btrfs_disk_key *disk_key, int nr); struct btrfs_disk_key *disk_key, int nr);
static inline void btrfs_set_node_key(struct extent_buffer *eb, static inline void btrfs_set_node_key(const struct extent_buffer *eb,
struct btrfs_disk_key *disk_key, int nr) struct btrfs_disk_key *disk_key, int nr)
{ {
unsigned long ptr; unsigned long ptr;
......
fs/btrfs/extent_io.c
View file @ 2b48966a
...@@ -2333,7 +2333,7 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start, ...@@ -2333,7 +2333,7 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start,
return 0; return 0;
} }
int btrfs_repair_eb_io_failure(struct extent_buffer *eb, int mirror_num) int btrfs_repair_eb_io_failure(const struct extent_buffer *eb, int mirror_num)
{ {
struct btrfs_fs_info *fs_info = eb->fs_info; struct btrfs_fs_info *fs_info = eb->fs_info;
u64 start = eb->start; u64 start = eb->start;
...@@ -4910,7 +4910,7 @@ static void __free_extent_buffer(struct extent_buffer *eb) ...@@ -4910,7 +4910,7 @@ static void __free_extent_buffer(struct extent_buffer *eb)
kmem_cache_free(extent_buffer_cache, eb); kmem_cache_free(extent_buffer_cache, eb);
} }
int extent_buffer_under_io(struct extent_buffer *eb) int extent_buffer_under_io(const struct extent_buffer *eb)
{ {
return (atomic_read(&eb->io_pages) || return (atomic_read(&eb->io_pages) ||
test_bit(EXTENT_BUFFER_WRITEBACK, &eb->bflags) || test_bit(EXTENT_BUFFER_WRITEBACK, &eb->bflags) ||
...@@ -5018,7 +5018,7 @@ __alloc_extent_buffer(struct btrfs_fs_info *fs_info, u64 start, ...@@ -5018,7 +5018,7 @@ __alloc_extent_buffer(struct btrfs_fs_info *fs_info, u64 start,
return eb; return eb;
} }
struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src) struct extent_buffer *btrfs_clone_extent_buffer(const struct extent_buffer *src)
{ {
int i; int i;
struct page *p; struct page *p;
...@@ -5424,7 +5424,7 @@ void free_extent_buffer_stale(struct extent_buffer *eb) ...@@ -5424,7 +5424,7 @@ void free_extent_buffer_stale(struct extent_buffer *eb)
release_extent_buffer(eb); release_extent_buffer(eb);
} }
void clear_extent_buffer_dirty(struct extent_buffer *eb) void clear_extent_buffer_dirty(const struct extent_buffer *eb)
{ {
int i; int i;
int num_pages; int num_pages;
...@@ -5720,7 +5720,7 @@ int memcmp_extent_buffer(const struct extent_buffer *eb, const void *ptrv, ...@@ -5720,7 +5720,7 @@ int memcmp_extent_buffer(const struct extent_buffer *eb, const void *ptrv,
return ret; return ret;
} }
void write_extent_buffer_chunk_tree_uuid(struct extent_buffer *eb, void write_extent_buffer_chunk_tree_uuid(const struct extent_buffer *eb,
const void *srcv) const void *srcv)
{ {
char *kaddr; char *kaddr;
...@@ -5731,7 +5731,7 @@ void write_extent_buffer_chunk_tree_uuid(struct extent_buffer *eb, ...@@ -5731,7 +5731,7 @@ void write_extent_buffer_chunk_tree_uuid(struct extent_buffer *eb,
BTRFS_FSID_SIZE); BTRFS_FSID_SIZE);
} }
void write_extent_buffer_fsid(struct extent_buffer *eb, const void *srcv) void write_extent_buffer_fsid(const struct extent_buffer *eb, const void *srcv)
{ {
char *kaddr; char *kaddr;
...@@ -5741,7 +5741,7 @@ void write_extent_buffer_fsid(struct extent_buffer *eb, const void *srcv) ...@@ -5741,7 +5741,7 @@ void write_extent_buffer_fsid(struct extent_buffer *eb, const void *srcv)
BTRFS_FSID_SIZE); BTRFS_FSID_SIZE);
} }
void write_extent_buffer(struct extent_buffer *eb, const void *srcv, void write_extent_buffer(const struct extent_buffer *eb, const void *srcv,
unsigned long start, unsigned long len) unsigned long start, unsigned long len)
{ {
size_t cur; size_t cur;
...@@ -5772,7 +5772,7 @@ void write_extent_buffer(struct extent_buffer *eb, const void *srcv, ...@@ -5772,7 +5772,7 @@ void write_extent_buffer(struct extent_buffer *eb, const void *srcv,
} }
} }
void memzero_extent_buffer(struct extent_buffer *eb, unsigned long start, void memzero_extent_buffer(const struct extent_buffer *eb, unsigned long start,
unsigned long len) unsigned long len)
{ {
size_t cur; size_t cur;
...@@ -5801,8 +5801,8 @@ void memzero_extent_buffer(struct extent_buffer *eb, unsigned long start, ...@@ -5801,8 +5801,8 @@ void memzero_extent_buffer(struct extent_buffer *eb, unsigned long start,
} }
} }
void copy_extent_buffer_full(struct extent_buffer *dst, void copy_extent_buffer_full(const struct extent_buffer *dst,
struct extent_buffer *src) const struct extent_buffer *src)
{ {
int i; int i;
int num_pages; int num_pages;
...@@ -5815,7 +5815,8 @@ void copy_extent_buffer_full(struct extent_buffer *dst, ...@@ -5815,7 +5815,8 @@ void copy_extent_buffer_full(struct extent_buffer *dst,
page_address(src->pages[i])); page_address(src->pages[i]));
} }
void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src, void copy_extent_buffer(const struct extent_buffer *dst,
const struct extent_buffer *src,
unsigned long dst_offset, unsigned long src_offset, unsigned long dst_offset, unsigned long src_offset,
unsigned long len) unsigned long len)
{ {
...@@ -5860,7 +5861,7 @@ void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src, ...@@ -5860,7 +5861,7 @@ void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src,
* This helper hides the ugliness of finding the byte in an extent buffer which * This helper hides the ugliness of finding the byte in an extent buffer which
* contains a given bit. * contains a given bit.
*/ */
static inline void eb_bitmap_offset(struct extent_buffer *eb, static inline void eb_bitmap_offset(const struct extent_buffer *eb,
unsigned long start, unsigned long nr, unsigned long start, unsigned long nr,
unsigned long *page_index, unsigned long *page_index,
size_t *page_offset) size_t *page_offset)
...@@ -5886,7 +5887,7 @@ static inline void eb_bitmap_offset(struct extent_buffer *eb, ...@@ -5886,7 +5887,7 @@ static inline void eb_bitmap_offset(struct extent_buffer *eb,
* @start: offset of the bitmap item in the extent buffer * @start: offset of the bitmap item in the extent buffer
* @nr: bit number to test * @nr: bit number to test
*/ */
int extent_buffer_test_bit(struct extent_buffer *eb, unsigned long start, int extent_buffer_test_bit(const struct extent_buffer *eb, unsigned long start,
unsigned long nr) unsigned long nr)
{ {
u8 *kaddr; u8 *kaddr;
...@@ -5908,7 +5909,7 @@ int extent_buffer_test_bit(struct extent_buffer *eb, unsigned long start, ...@@ -5908,7 +5909,7 @@ int extent_buffer_test_bit(struct extent_buffer *eb, unsigned long start,
* @pos: bit number of the first bit * @pos: bit number of the first bit
* @len: number of bits to set * @len: number of bits to set
*/ */
void extent_buffer_bitmap_set(struct extent_buffer *eb, unsigned long start, void extent_buffer_bitmap_set(const struct extent_buffer *eb, unsigned long start,
unsigned long pos, unsigned long len) unsigned long pos, unsigned long len)
{ {
u8 *kaddr; u8 *kaddr;
...@@ -5950,8 +5951,9 @@ void extent_buffer_bitmap_set(struct extent_buffer *eb, unsigned long start, ...@@ -5950,8 +5951,9 @@ void extent_buffer_bitmap_set(struct extent_buffer *eb, unsigned long start,
* @pos: bit number of the first bit * @pos: bit number of the first bit
* @len: number of bits to clear * @len: number of bits to clear
*/ */
void extent_buffer_bitmap_clear(struct extent_buffer *eb, unsigned long start, void extent_buffer_bitmap_clear(const struct extent_buffer *eb,
unsigned long pos, unsigned long len) unsigned long start, unsigned long pos,
unsigned long len)
{ {
u8 *kaddr; u8 *kaddr;
struct page *page; struct page *page;
...@@ -6012,8 +6014,9 @@ static void copy_pages(struct page *dst_page, struct page *src_page, ...@@ -6012,8 +6014,9 @@ static void copy_pages(struct page *dst_page, struct page *src_page,
memcpy(dst_kaddr + dst_off, src_kaddr + src_off, len); memcpy(dst_kaddr + dst_off, src_kaddr + src_off, len);
} }
void memcpy_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset, void memcpy_extent_buffer(const struct extent_buffer *dst,
unsigned long src_offset, unsigned long len) unsigned long dst_offset, unsigned long src_offset,
unsigned long len)
{ {
struct btrfs_fs_info *fs_info = dst->fs_info; struct btrfs_fs_info *fs_info = dst->fs_info;
size_t cur; size_t cur;
...@@ -6057,8 +6060,9 @@ void memcpy_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset, ...@@ -6057,8 +6060,9 @@ void memcpy_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
} }
} }
void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset, void memmove_extent_buffer(const struct extent_buffer *dst,
unsigned long src_offset, unsigned long len) unsigned long dst_offset, unsigned long src_offset,
unsigned long len)
{ {
struct btrfs_fs_info *fs_info = dst->fs_info; struct btrfs_fs_info *fs_info = dst->fs_info;
size_t cur; size_t cur;
......
fs/btrfs/extent_io.h
View file @ 2b48966a
...@@ -213,7 +213,7 @@ struct extent_buffer *__alloc_dummy_extent_buffer(struct btrfs_fs_info *fs_info, ...@@ -213,7 +213,7 @@ struct extent_buffer *__alloc_dummy_extent_buffer(struct btrfs_fs_info *fs_info,
u64 start, unsigned long len); u64 start, unsigned long len);
struct extent_buffer *alloc_dummy_extent_buffer(struct btrfs_fs_info *fs_info, struct extent_buffer *alloc_dummy_extent_buffer(struct btrfs_fs_info *fs_info,
u64 start); u64 start);
struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src); struct extent_buffer *btrfs_clone_extent_buffer(const struct extent_buffer *src);
struct extent_buffer *find_extent_buffer(struct btrfs_fs_info *fs_info, struct extent_buffer *find_extent_buffer(struct btrfs_fs_info *fs_info,
u64 start); u64 start);
void free_extent_buffer(struct extent_buffer *eb); void free_extent_buffer(struct extent_buffer *eb);
...@@ -231,7 +231,7 @@ static inline int num_extent_pages(const struct extent_buffer *eb) ...@@ -231,7 +231,7 @@ static inline int num_extent_pages(const struct extent_buffer *eb)
(eb->start >> PAGE_SHIFT); (eb->start >> PAGE_SHIFT);
} }
static inline int extent_buffer_uptodate(struct extent_buffer *eb) static inline int extent_buffer_uptodate(const struct extent_buffer *eb)
{ {
return test_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags); return test_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags);
} }
...@@ -244,33 +244,37 @@ void read_extent_buffer(const struct extent_buffer *eb, void *dst, ...@@ -244,33 +244,37 @@ void read_extent_buffer(const struct extent_buffer *eb, void *dst,
int read_extent_buffer_to_user(const struct extent_buffer *eb, int read_extent_buffer_to_user(const struct extent_buffer *eb,
void __user *dst, unsigned long start, void __user *dst, unsigned long start,
unsigned long len); unsigned long len);
void write_extent_buffer_fsid(struct extent_buffer *eb, const void *src); void write_extent_buffer_fsid(const struct extent_buffer *eb, const void *src);
void write_extent_buffer_chunk_tree_uuid(struct extent_buffer *eb, void write_extent_buffer_chunk_tree_uuid(const struct extent_buffer *eb,
const void *src); const void *src);
void write_extent_buffer(struct extent_buffer *eb, const void *src, void write_extent_buffer(const struct extent_buffer *eb, const void *src,
unsigned long start, unsigned long len); unsigned long start, unsigned long len);
void copy_extent_buffer_full(struct extent_buffer *dst, void copy_extent_buffer_full(const struct extent_buffer *dst,
struct extent_buffer *src); const struct extent_buffer *src);
void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src, void copy_extent_buffer(const struct extent_buffer *dst,
const struct extent_buffer *src,
unsigned long dst_offset, unsigned long src_offset, unsigned long dst_offset, unsigned long src_offset,
unsigned long len); unsigned long len);
void memcpy_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset, void memcpy_extent_buffer(const struct extent_buffer *dst,
unsigned long src_offset, unsigned long len); unsigned long dst_offset, unsigned long src_offset,
void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset, unsigned long len);
unsigned long src_offset, unsigned long len); void memmove_extent_buffer(const struct extent_buffer *dst,
void memzero_extent_buffer(struct extent_buffer *eb, unsigned long start, unsigned long dst_offset, unsigned long src_offset,
unsigned long len); unsigned long len);
int extent_buffer_test_bit(struct extent_buffer *eb, unsigned long start, void memzero_extent_buffer(const struct extent_buffer *eb, unsigned long start,
unsigned long len);
int extent_buffer_test_bit(const struct extent_buffer *eb, unsigned long start,
unsigned long pos); unsigned long pos);
void extent_buffer_bitmap_set(struct extent_buffer *eb, unsigned long start, void extent_buffer_bitmap_set(const struct extent_buffer *eb, unsigned long start,
unsigned long pos, unsigned long len); unsigned long pos, unsigned long len);
void extent_buffer_bitmap_clear(struct extent_buffer *eb, unsigned long start, void extent_buffer_bitmap_clear(const struct extent_buffer *eb,
unsigned long pos, unsigned long len); unsigned long start, unsigned long pos,
void clear_extent_buffer_dirty(struct extent_buffer *eb); unsigned long len);
void clear_extent_buffer_dirty(const struct extent_buffer *eb);
bool set_extent_buffer_dirty(struct extent_buffer *eb); bool set_extent_buffer_dirty(struct extent_buffer *eb);
void set_extent_buffer_uptodate(struct extent_buffer *eb); void set_extent_buffer_uptodate(struct extent_buffer *eb);
void clear_extent_buffer_uptodate(struct extent_buffer *eb); void clear_extent_buffer_uptodate(struct extent_buffer *eb);
int extent_buffer_under_io(struct extent_buffer *eb); int extent_buffer_under_io(const struct extent_buffer *eb);
void extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end); void extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end);
void extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end); void extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end);
void extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end, void extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end,
...@@ -289,7 +293,7 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start, ...@@ -289,7 +293,7 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start,
u64 length, u64 logical, struct page *page, u64 length, u64 logical, struct page *page,
unsigned int pg_offset, int mirror_num); unsigned int pg_offset, int mirror_num);
void end_extent_writepage(struct page *page, int err, u64 start, u64 end); void end_extent_writepage(struct page *page, int err, u64 start, u64 end);
int btrfs_repair_eb_io_failure(struct extent_buffer *eb, int mirror_num); int btrfs_repair_eb_io_failure(const struct extent_buffer *eb, int mirror_num);
/* /*
* When IO fails, either with EIO or csum verification fails, we * When IO fails, either with EIO or csum verification fails, we
......
fs/btrfs/struct-funcs.c
View file @ 2b48966a
...@@ -131,7 +131,7 @@ void btrfs_set_token_##bits(struct btrfs_map_token *token, \ ...@@ -131,7 +131,7 @@ void btrfs_set_token_##bits(struct btrfs_map_token *token, \
leres = cpu_to_le##bits(val); \ leres = cpu_to_le##bits(val); \
write_extent_buffer(token->eb, &leres, member_offset, size); \ write_extent_buffer(token->eb, &leres, member_offset, size); \
} \ } \
void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ void btrfs_set_##bits(const struct extent_buffer *eb, void *ptr, \
unsigned long off, u##bits val) \ unsigned long off, u##bits val) \
{ \ { \
const unsigned long member_offset = (unsigned long)ptr + off; \ const unsigned long member_offset = (unsigned long)ptr + off; \
......
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