This lays the ground work for enabling casefolding and encryption at the same time for ext4 and f2fs. A future set of patches will enable that functionality. These unify the highly similar dentry_operations that ext4 and f2fs both use for casefolding. In addition, they improve d_hash by not requiring a new string allocation, and ensure we don't attempt to casefold the no-key token of an encrypted filename. Daniel Rosenberg (4): unicode: Add utf8_casefold_hash fs: Add standard casefolding support f2fs: Use generic casefolding support ext4: Use generic casefolding support fs/ext4/dir.c | 64 +-------------------------- fs/ext4/ext4.h | 12 ------ fs/ext4/hash.c | 2 +- fs/ext4/namei.c | 20 ++++----- fs/ext4/super.c | 12 +++--- fs/f2fs/dir.c | 83 ++++------------------------------- fs/f2fs/f2fs.h | 4 -- fs/f2fs/super.c | 10 ++--- fs/f2fs/sysfs.c | 10 +++-- fs/libfs.c | 96 +++++++++++++++++++++++++++++++++++++++++ fs/unicode/utf8-core.c | 23 +++++++++- include/linux/f2fs_fs.h | 3 -- include/linux/fs.h | 16 +++++++ include/linux/unicode.h | 3 ++ 14 files changed, 174 insertions(+), 184 deletions(-) -- 2.27.0.212.ge8ba1cc988-goog