summaryrefslogtreecommitdiffstats
path: root/fs/btrfs/extent_io.h
diff options
context:
space:
mode:
authorDavid Sterba <dsterba@suse.com>2016-11-09 17:43:38 +0100
committerDavid Sterba <dsterba@suse.com>2016-11-30 13:45:17 +0100
commitf157bf765b3773efb5e981dea286cd311fca3b59 (patch)
treeac59008400086c6c7f5a8f205ad3e9da14659fe0 /fs/btrfs/extent_io.h
parentbtrfs: delete unused member from superblock (diff)
downloadlinux-f157bf765b3773efb5e981dea286cd311fca3b59.tar.xz
linux-f157bf765b3773efb5e981dea286cd311fca3b59.zip
btrfs: introduce helpers for updating eb uuids
The fsid and chunk tree uuid are always located in the first page, we don't need the to use write_extent_buffer. Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to '')
-rw-r--r--fs/btrfs/extent_io.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index ab31d145227e..065c77d43921 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -405,6 +405,9 @@ void read_extent_buffer(struct extent_buffer *eb, void *dst,
int read_extent_buffer_to_user(struct extent_buffer *eb, void __user *dst,
unsigned long start,
unsigned long len);
+void write_extent_buffer_fsid(struct extent_buffer *eb, const void *src);
+void write_extent_buffer_chunk_tree_uuid(struct extent_buffer *eb,
+ const void *src);
void write_extent_buffer(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,