fs/ntfs3: Initiliaze sb blocksize only in one place + refactor

Right now sb blocksize first get initiliazed in fill_super but in can be
changed in helper function. It makes more sense to that this happened
only in one place.

Because we move this to helper function it makes more sense that
s_maxbytes will also be there. I rather have every sb releted thing in
fill_super, but because there is already sb releted stuff in this
helper. This will have to do for now.
Signed-off-by: Kari Argillander <kari.argillander@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

fs/ntfs3/super.c

@@ -840,8 +840,7 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
 	rec->total = cpu_to_le32(sbi->record_size);
 	((struct ATTRIB *)Add2Ptr(rec, ao))->type = ATTR_END;
 
-	if (sbi->cluster_size < PAGE_SIZE)
-		sb_set_blocksize(sb, sbi->cluster_size);
+	sb_set_blocksize(sb, min_t(u32, sbi->cluster_size, PAGE_SIZE));
 
 	sbi->block_mask = sb->s_blocksize - 1;
 	sbi->blocks_per_cluster = sbi->cluster_size >> sb->s_blocksize_bits;
@@ -854,9 +853,11 @@ static int ntfs_init_from_boot(struct super_block *sb, u32 sector_size,
 	if (clusters >= (1ull << (64 - sbi->cluster_bits)))
 		sbi->maxbytes = -1;
 	sbi->maxbytes_sparse = -1;
+	sb->s_maxbytes = MAX_LFS_FILESIZE;
 #else
 	/* Maximum size for sparse file. */
 	sbi->maxbytes_sparse = (1ull << (sbi->cluster_bits + 32)) - 1;
+	sb->s_maxbytes = 0xFFFFFFFFull << sbi->cluster_bits;
 #endif
 
 	err = 0;
@@ -911,20 +912,12 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc)
 			~(u64)(sbi->discard_granularity - 1);
 	}
 
-	sb_set_blocksize(sb, PAGE_SIZE);
-
 	/* Parse boot. */
 	err = ntfs_init_from_boot(sb, rq ? queue_logical_block_size(rq) : 512,
 				  bdev->bd_inode->i_size);
 	if (err)
 		return err;
 
-#ifdef CONFIG_NTFS3_64BIT_CLUSTER
-	sb->s_maxbytes = MAX_LFS_FILESIZE;
-#else
-	sb->s_maxbytes = 0xFFFFFFFFull << sbi->cluster_bits;
-#endif
-
 	/*
 	 * Load $Volume. This should be done before $LogFile
 	 * 'cause 'sbi->volume.ni' is used 'ntfs_set_state'.