fs/hfsplus/wrapper.c: replace min/casting by min_t

Also add * before function comments (it was not detected by kernel-doc)
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Cc: Vyacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

fs/hfsplus/wrapper.c

@@ -24,8 +24,8 @@ struct hfsplus_wd {
 	u16 embed_count;
 };
 
-/*
- * hfsplus_submit_bio - Perfrom block I/O
+/**
+ * hfsplus_submit_bio - Perform block I/O
  * @sb: super block of volume for I/O
  * @sector: block to read or write, for blocks of HFSPLUS_SECTOR_SIZE bytes
  * @buf: buffer for I/O
@@ -234,7 +234,7 @@ int hfsplus_read_wrapper(struct super_block *sb)
 	sbi->alloc_blksz_shift = 0;
 	while ((blocksize >>= 1) != 0)
 		sbi->alloc_blksz_shift++;
-	blocksize = min(sbi->alloc_blksz, (u32)PAGE_SIZE);
+	blocksize = min_t(u32, sbi->alloc_blksz, PAGE_SIZE);
 
 	/*
 	 * Align block size to block offset.