Commit 73980bec authored by Jeff Mahoney's avatar Jeff Mahoney Committed by David Sterba
Browse files

btrfs: backref, constify some arguments 



This constifies a few buffers used in the backref code.

Signed-off-by: default avatarJeff Mahoney <jeffm@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 9a35b637

fs/btrfs/backref.c

+16 −13
Original line number Diff line number Diff line
@@ -299,8 +299,9 @@ static int ref_tree_add(struct ref_root *ref_tree, u64 root_id, u64 object_id, 
	return 0;

}



static int check_extent_in_eb(struct btrfs_key *key, struct extent_buffer *eb,

				struct btrfs_file_extent_item *fi,

static int check_extent_in_eb(const struct btrfs_key *key,

			      const struct extent_buffer *eb,

			      const struct btrfs_file_extent_item *fi,

			      u64 extent_item_pos,

			      struct extent_inode_elem **eie)

{
@@ -344,8 +345,8 @@ static void free_inode_elem_list(struct extent_inode_elem *eie) 
	}

}



static int find_extent_in_eb(struct extent_buffer *eb, u64 wanted_disk_byte,

				u64 extent_item_pos,

static int find_extent_in_eb(const struct extent_buffer *eb,

			     u64 wanted_disk_byte, u64 extent_item_pos,

			     struct extent_inode_elem **eie)

{

	u64 disk_byte;
@@ -456,7 +457,7 @@ void btrfs_prelim_ref_exit(void) 
 */



static int __add_prelim_ref(struct list_head *head, u64 root_id,

			    struct btrfs_key *key, int level,

			    const struct btrfs_key *key, int level,

			    u64 parent, u64 wanted_disk_byte, int count,

			    gfp_t gfp_mask)

{
@@ -1649,7 +1650,7 @@ int btrfs_find_one_extref(struct btrfs_root *root, u64 inode_objectid, 
	struct btrfs_key key;

	struct btrfs_key found_key;

	struct btrfs_inode_extref *extref;

	struct extent_buffer *leaf;

	const struct extent_buffer *leaf;

	unsigned long ptr;



	key.objectid = inode_objectid;
@@ -1806,7 +1807,7 @@ int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical, 
	u64 flags;

	u64 size = 0;

	u32 item_size;

	struct extent_buffer *eb;

	const struct extent_buffer *eb;

	struct btrfs_extent_item *ei;

	struct btrfs_key key;
@@ -1874,9 +1875,11 @@ int extent_from_logical(struct btrfs_fs_info *fs_info, u64 logical, 
 * next ref. after the last ref was processed, 1 is returned.

 * returns <0 on error

 */

static int __get_extent_inline_ref(unsigned long *ptr, struct extent_buffer *eb,

				   struct btrfs_key *key,

				   struct btrfs_extent_item *ei, u32 item_size,

static int __get_extent_inline_ref(unsigned long *ptr,

				   const struct extent_buffer *eb,

				   const struct btrfs_key *key,

				   const struct btrfs_extent_item *ei,

				   u32 item_size,

				   struct btrfs_extent_inline_ref **out_eiref,

				   int *out_type)

{