From b3cbfb0dd4a80c359701280f6acfa37131d8ee8b Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Sat, 29 Apr 2023 16:07:20 -0400 Subject: btrfs: add a btrfs_csum_type_size helper This is needed in btrfs-progs for the tools that convert the checksum types for file systems and a few other things. We don't have it in the kernel as we just want to get the size for the super blocks type. However I don't want to have to manually add this every time we sync ctree.c into btrfs-progs, so add the helper in the kernel with a note so it doesn't get removed by a later cleanup. Signed-off-by: Josef Bacik Signed-off-by: David Sterba --- fs/btrfs/ctree.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'fs/btrfs/ctree.c') diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 0c83cd78a483..ddd22f16cdff 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -150,13 +150,19 @@ static inline void copy_leaf_items(const struct extent_buffer *dst, nr_items * sizeof(struct btrfs_item)); } +/* This exists for btrfs-progs usages. */ +u16 btrfs_csum_type_size(u16 type) +{ + return btrfs_csums[type].size; +} + int btrfs_super_csum_size(const struct btrfs_super_block *s) { u16 t = btrfs_super_csum_type(s); /* * csum type is validated at mount time */ - return btrfs_csums[t].size; + return btrfs_csum_type_size(t); } const char *btrfs_super_csum_name(u16 csum_type) -- cgit v1.2.3-73-gaa49b