Commit ad4b63ca authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: move maximum limits to btrfs_tree.h 



We have maximum link and name length limits, move these to btrfs_tree.h
as they're on disk limitations.

Reviewed-by: default avatarQu Wenruo <wqu@suse.com>
Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
[ reformat comments ]
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 51129b33

fs/btrfs/ctree.h

+0 −13
Original line number Diff line number Diff line
@@ -68,19 +68,6 @@ struct reloc_control; 


#define BTRFS_OLDEST_GENERATION	0ULL



/*

 * we can actually store much bigger names, but lets not confuse the rest

 * of linux

 */

#define BTRFS_NAME_LEN 255



/*

 * Theoretical limit is larger, but we keep this down to a sane

 * value. That should limit greatly the possibility of collisions on

 * inode ref items.

 */

#define BTRFS_LINK_MAX 65535U



#define BTRFS_EMPTY_DIR_SIZE 0



#define BTRFS_DIRTY_METADATA_THRESH	SZ_32M

include/uapi/linux/btrfs_tree.h

+12 −0
Original line number Diff line number Diff line
@@ -15,6 +15,18 @@ 


#define BTRFS_MAX_LEVEL 8



/*

 * We can actually store much bigger names, but lets not confuse the rest of

 * linux.

 */

#define BTRFS_NAME_LEN 255



/*

 * Theoretical limit is larger, but we keep this down to a sane value. That

 * should limit greatly the possibility of collisions on inode ref items.

 */

#define BTRFS_LINK_MAX 65535U



/*

 * This header contains the structure definitions and constants used

 * by file system objects that can be retrieved using