diff options
| author | Nikolay Borisov <nborisov@suse.com> | 2018-10-01 17:46:13 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-10-23 15:46:33 +0200 |
| commit | b1a1b8902998d3c1e082ae2fe09cdfd09d1c4583 (patch) | |
| tree | 88a831af17c9b2d918df1274526b0836439c3b75 /extent_io.h | |
| parent | d8acc433533ac25a1a4b2432c73516a369acddb0 (diff) | |
btrfs-progs: Add extent buffer bitmap manipulation infrastructure
Those functions are in preparation for adding the freespace tree repair
code since it needs to be able to deal with bitmap based FSTs. This
patch adds extent_buffer_bitmap_set and extent_buffer_bitmap_clear
functions. Since in userspace we don't have to deal with page mappings
their implementation is vastly simplified by simply setting each bit in
the passed range.
Reviewed-by: Su Yue <suy.fnst@cn.fujitsu.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'extent_io.h')
| -rw-r--r-- | extent_io.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/extent_io.h b/extent_io.h index d407d93d..9587528b 100644 --- a/extent_io.h +++ b/extent_io.h @@ -175,4 +175,9 @@ int read_data_from_disk(struct btrfs_fs_info *info, void *buf, u64 offset, u64 bytes, int mirror); int write_data_to_disk(struct btrfs_fs_info *info, void *buf, u64 offset, u64 bytes, int mirror); +void extent_buffer_bitmap_clear(struct extent_buffer *eb, unsigned long start, + unsigned long pos, unsigned long len); +void extent_buffer_bitmap_set(struct extent_buffer *eb, unsigned long start, + unsigned long pos, unsigned long len); + #endif |