i2c: qcom-geni: Disable DMA processing on the Lenovo Yoga C630

[linux.git] / fs / f2fs / hash.c

diff --git a/fs/f2fs/hash.c b/fs/f2fs/hash.c
index cc82f142f811f63065aa9299a2bdc772d79660aa..5bc4dcd8fc03fbbb97ece6233c925634dc972fa8 100644 (file)
--- a/fs/f2fs/hash.c
+++ b/fs/f2fs/hash.c
@@ -14,6 +14,7 @@
 #include <linux/f2fs_fs.h>
 #include <linux/cryptohash.h>
 #include <linux/pagemap.h>
+#include <linux/unicode.h>
 
 #include "f2fs.h"
 
@@ -67,7 +68,7 @@ static void str2hashbuf(const unsigned char *msg, size_t len,
                *buf++ = pad;
 }
 
-f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info,
+static f2fs_hash_t __f2fs_dentry_hash(const struct qstr *name_info,
                                struct fscrypt_name *fname)
 {
        __u32 hash;
@@ -103,3 +104,37 @@ f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info,
        f2fs_hash = cpu_to_le32(hash & ~F2FS_HASH_COL_BIT);
        return f2fs_hash;
 }
+
+f2fs_hash_t f2fs_dentry_hash(const struct inode *dir,
+               const struct qstr *name_info, struct fscrypt_name *fname)
+{
+#ifdef CONFIG_UNICODE
+       struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
+       const struct unicode_map *um = sbi->s_encoding;
+       int r, dlen;
+       unsigned char *buff;
+       struct qstr folded;
+
+       if (!name_info->len || !IS_CASEFOLDED(dir))
+               goto opaque_seq;
+
+       buff = f2fs_kzalloc(sbi, sizeof(char) * PATH_MAX, GFP_KERNEL);
+       if (!buff)
+               return -ENOMEM;
+
+       dlen = utf8_casefold(um, name_info, buff, PATH_MAX);
+       if (dlen < 0) {
+               kvfree(buff);
+               goto opaque_seq;
+       }
+       folded.name = buff;
+       folded.len = dlen;
+       r = __f2fs_dentry_hash(&folded, fname);
+
+       kvfree(buff);
+       return r;
+
+opaque_seq:
+#endif
+       return __f2fs_dentry_hash(name_info, fname);
+}