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| author |   Josef Bacik <josef@toxicpanda.com> | 2022-09-14 11:06:30 -0400 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2022-12-05 18:00:37 +0100 |
| commit | ad4b63caf56d0dc08e03966172d685ff9ebad996 (patch) | |
| tree | 3d47cecdaa3cab05fa3fa9bc059d185e0a18b767 /include/uapi/linux/btrfs_tree.h | |
| parent | btrfs: move btrfs_get_block_group helper out of disk-io.h (diff) | |
| download | wireguard-linux-ad4b63caf56d0dc08e03966172d685ff9ebad996.tar.xz wireguard-linux-ad4b63caf56d0dc08e03966172d685ff9ebad996.zip | |
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 <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ reformat comments ]
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'include/uapi/linux/btrfs_tree.h')
| -rw-r--r-- | include/uapi/linux/btrfs_tree.h | 12 |
1 files changed, 12 insertions, 0 deletions
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 @@ -16,6 +16,18 @@ #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 * the BTRFS_IOC_SEARCH_TREE ioctl. That means basically anything that |