From ad4b63caf56d0dc08e03966172d685ff9ebad996 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Wed, 14 Sep 2022 11:06:30 -0400 Subject: 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: Qu Wenruo Reviewed-by: Johannes Thumshirn Signed-off-by: Josef Bacik Reviewed-by: David Sterba [ reformat comments ] Signed-off-by: David Sterba --- include/uapi/linux/btrfs_tree.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/btrfs_tree.h b/include/uapi/linux/btrfs_tree.h index d43f67f676c2..4809272f5063 100644 --- a/include/uapi/linux/btrfs_tree.h +++ b/include/uapi/linux/btrfs_tree.h @@ -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 -- cgit v1.2.3