Filesystems that need to deal with the super block encoding need to use
a if IS_ENABLED(CONFIG_UNICODE) around it because this struct member is
not declared otherwise. In order to move this if/endif guards outside of
the filesytem code and make it simpler, create a new function that
returns the s_encoding member of struct super_block if Unicode is
enabled, and return NULL otherwise.
Suggested-by: Amir Goldstein <amir73il@xxxxxxxxx>
Signed-off-by: André Almeida <andrealmeid@xxxxxxxxxx>
---
Changes from v3:
- New patch
---
include/linux/fs.h | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 796319914b0a063642c2bd0c0140697a0eb651f6..20102d81e18a59d5daaed06855d1f168979b4fa7 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3739,15 +3739,20 @@ static inline bool generic_ci_validate_strict_name(struct inode *dir, struct qst
}
#endif
-static inline bool sb_has_encoding(const struct super_block *sb)
+static inline struct unicode_map *sb_encoding(const struct super_block *sb)
{
#if IS_ENABLED(CONFIG_UNICODE)
- return !!sb->s_encoding;
+ return sb->s_encoding;
#else
- return false;
+ return NULL;
#endif
}
+static inline bool sb_has_encoding(const struct super_block *sb)
+{
+ return !!sb_encoding(sb);
+}
+
int may_setattr(struct mnt_idmap *idmap, struct inode *inode,
unsigned int ia_valid);
int setattr_prepare(struct mnt_idmap *, struct dentry *, struct iattr *);
--
2.50.1
