diff options
| -rw-r--r-- | fs/libfs.c | 28 | ||||
| -rw-r--r-- | include/linux/fs.h | 1 |
2 files changed, 29 insertions, 0 deletions
diff --git a/fs/libfs.c b/fs/libfs.c index 3993453c9787..c9d85f525ae8 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -1819,6 +1819,34 @@ void generic_set_encrypted_ci_d_ops(struct dentry *dentry) EXPORT_SYMBOL(generic_set_encrypted_ci_d_ops); /** + * generic_set_sb_d_ops - helper for choosing the set of + * filesystem-wide dentry operations for the enabled features + * @sb: superblock to be configured + * + * Filesystems supporting casefolding and/or fscrypt can call this + * helper at mount-time to configure sb->s_d_op to best set of dentry + * operations required for the enabled features. The helper must be + * called after these have been configured, but before the root dentry + * is created. + */ +void generic_set_sb_d_ops(struct super_block *sb) +{ +#if IS_ENABLED(CONFIG_UNICODE) + if (sb->s_encoding) { + sb->s_d_op = &generic_ci_dentry_ops; + return; + } +#endif +#ifdef CONFIG_FS_ENCRYPTION + if (sb->s_cop) { + sb->s_d_op = &generic_encrypted_dentry_ops; + return; + } +#endif +} +EXPORT_SYMBOL(generic_set_sb_d_ops); + +/** * inode_maybe_inc_iversion - increments i_version * @inode: inode with the i_version that should be updated * @force: increment the counter even if it's not necessary? diff --git a/include/linux/fs.h b/include/linux/fs.h index a0eb8b5759a6..383c5145465f 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3281,6 +3281,7 @@ extern int generic_file_fsync(struct file *, loff_t, loff_t, int); extern int generic_check_addressable(unsigned, u64); extern void generic_set_encrypted_ci_d_ops(struct dentry *dentry); +extern void generic_set_sb_d_ops(struct super_block *sb); static inline bool sb_has_encoding(const struct super_block *sb) { |