[dm-devel] [PATCH 17/17] btrfs: unexport btrfs_get_io_geometry()

[Qu Wenruo]

This function provides a lighter weight version of btrfs_map_block(),
just to provide enough info without filling everything of
btrfs_map_block().

But that function is only used for stripe boundary calculation, and now
stripe boundary calculation is all handled inside btrfs_map_bio(), there
is no need to export it anymore.

Signed-off-by: Qu Wenruo <wqu at suse.com>
---
 fs/btrfs/volumes.c | 8 ++++----
 fs/btrfs/volumes.h | 3 ---
 2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 35ba1ea95295..89d14531c2b3 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -6320,9 +6320,9 @@ static bool need_full_stripe(enum btrfs_map_op op)
  * Returns < 0 in case a chunk for the given logical address cannot be found,
  * usually shouldn't happen unless @logical is corrupted, 0 otherwise.
  */
-int btrfs_get_io_geometry(struct btrfs_fs_info *fs_info, struct extent_map *em,
-			  enum btrfs_map_op op, u64 logical,
-			  struct btrfs_io_geometry *io_geom)
+static int get_io_geometry(struct btrfs_fs_info *fs_info, struct extent_map *em,
+			   enum btrfs_map_op op, u64 logical,
+			   struct btrfs_io_geometry *io_geom)
 {
 	struct map_lookup *map;
 	u64 len;
@@ -6434,7 +6434,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info,
 	em = btrfs_get_chunk_map(fs_info, logical, *length);
 	ASSERT(!IS_ERR(em));
 
-	ret = btrfs_get_io_geometry(fs_info, em, op, logical, &geom);
+	ret = get_io_geometry(fs_info, em, op, logical, &geom);
 	if (ret < 0)
 		return ret;
 
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index b2dbf895b4e3..b37ee1e16d5b 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -562,9 +562,6 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
 int btrfs_map_sblock(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
 		     u64 logical, u64 *length,
 		     struct btrfs_io_context **bioc_ret);
-int btrfs_get_io_geometry(struct btrfs_fs_info *fs_info, struct extent_map *map,
-			  enum btrfs_map_op op, u64 logical,
-			  struct btrfs_io_geometry *io_geom);
 int btrfs_read_sys_array(struct btrfs_fs_info *fs_info);
 int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info);
 struct btrfs_block_group *btrfs_create_chunk(struct btrfs_trans_handle *trans,
-- 
2.34.1