c8h4/btrfs-progs
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btrfs-progs: add some missing extent buffer helpers

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The following are some extent buffer helpers we have in the kernel but
not in btrfs-progs.  Sync these in to make syncing ctree.c easier.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2023-04-19 17:20:46 -04:00 committed by David Sterba
parent 5780714b58
commit 216f442e5e
2 changed files with 14 additions and 0 deletions
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11
kernel-shared/extent_io.c
View file

@ -617,6 +617,12 @@ void copy_extent_buffer(const struct extent_buffer *dst,
memcpy((void *)dst->data + dst_offset, src->data + src_offset, len);
}
void copy_extent_buffer_full(const struct extent_buffer *dst,
const struct extent_buffer *src)
{
copy_extent_buffer(dst, src, 0, 0, src->len);
}
void memmove_extent_buffer(const struct extent_buffer *dst, unsigned long dst_offset,
unsigned long src_offset, unsigned long len)
{
@ -634,3 +640,8 @@ int extent_buffer_test_bit(const struct extent_buffer *eb, unsigned long start,
{
return le_test_bit(nr, (u8 *)eb->data + start);
}
void write_extent_buffer_fsid(const struct extent_buffer *eb, const void *srcv)
{
write_extent_buffer(eb, srcv, btrfs_header_fsid(), BTRFS_FSID_SIZE);
}

3
kernel-shared/extent_io.h
View file

@ -114,6 +114,8 @@ void copy_extent_buffer(const struct extent_buffer *dst,
const struct extent_buffer *src,
unsigned long dst_offset, unsigned long src_offset,
unsigned long len);
void copy_extent_buffer_full(const struct extent_buffer *dst,
const struct extent_buffer *src);
void memmove_extent_buffer(const struct extent_buffer *dst,
const unsigned long dst_offset,
unsigned long src_offset, unsigned long len);
@ -133,5 +135,6 @@ void extent_buffer_bitmap_set(struct extent_buffer *eb, unsigned long start,
unsigned long pos, unsigned long len);
void extent_buffer_init_cache(struct btrfs_fs_info *fs_info);
void extent_buffer_free_cache(struct btrfs_fs_info *fs_info);
void write_extent_buffer_fsid(const struct extent_buffer *eb, const void *srcv);
#endif