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btrfs-progs: constify the extent buffer helpers 

These helpers are all take const struct extent_buffer in the kernel, do
the same in btrfs-progs in order to enable us to more easily sync
ctree.c.

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 17:20:41 -04:00 committed by David Sterba
parent 4a9a8f2a8a
commit c6b160c4e4
2 changed files with 14 additions and 11 deletions
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15
kernel-shared/extent_io.c
View File

@ -609,26 +609,27 @@ void write_extent_buffer(const struct extent_buffer *eb, const void *src,
memcpy((void *)eb->data + start, src, len);
}
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 len)
{
memcpy(dst->data + dst_offset, src->data + src_offset, len);
memcpy((void *)dst->data + dst_offset, src->data + src_offset, len);
}
void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
void memmove_extent_buffer(const struct extent_buffer *dst, unsigned long dst_offset,
unsigned long src_offset, unsigned long len)
{
memmove(dst->data + dst_offset, dst->data + src_offset, len);
memmove((void *)dst->data + dst_offset, dst->data + src_offset, len);
}
void memset_extent_buffer(struct extent_buffer *eb, char c,
void memset_extent_buffer(const struct extent_buffer *eb, char c,
unsigned long start, unsigned long len)
{
memset(eb->data + start, c, len);
memset((void *)eb->data + start, c, len);
}
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)
{
return le_test_bit(nr, (u8 *)eb->data + start);

10
kernel-shared/extent_io.h
View File

@ -110,14 +110,16 @@ void read_extent_buffer(const struct extent_buffer *eb, void *dst,
unsigned long start, unsigned long len);
void write_extent_buffer(const struct extent_buffer *eb, const void *src,
unsigned long start, unsigned long len);
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 len);
void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
void memmove_extent_buffer(const struct extent_buffer *dst,
const unsigned long dst_offset,
unsigned long src_offset, unsigned long len);
void memset_extent_buffer(struct extent_buffer *eb, char c,
void memset_extent_buffer(const struct extent_buffer *eb, char c,
unsigned long start, unsigned long len);
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);
int set_extent_buffer_dirty(struct extent_buffer *eb);
int clear_extent_buffer_dirty(struct extent_buffer *eb);