diff --git a/exfat_fs.h b/exfat_fs.h
index 00f3cd631bac..89ea4942f88f 100644
--- a/exfat_fs.h
+++ b/exfat_fs.h
@@ -11,7 +11,7 @@
 #include <linux/ratelimit.h>
 #include <linux/nls.h>
 
-#define EXFAT_VERSION		"5.10.1"
+#define EXFAT_VERSION		"5.11.1"
 
 #define EXFAT_SUPER_MAGIC       0x2011BAB0UL
 #define EXFAT_ROOT_INO		1
diff --git a/file.c b/file.c
index db10146c53b1..44c41c9b5308 100644
--- a/file.c
+++ b/file.c
@@ -244,7 +244,11 @@ void exfat_truncate(struct inode *inode, loff_t size)
 {
 	struct super_block *sb = inode->i_sb;
 	struct exfat_sb_info *sbi = EXFAT_SB(sb);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)
 	unsigned int blocksize = i_blocksize(inode);
+#else
+	unsigned int blocksize = 1 << inode->i_blkbits;
+#endif
 	loff_t aligned_size;
 	int err;
 
diff --git a/nls.c b/nls.c
index 675d0e7058c5..58e434a5c330 100644
--- a/nls.c
+++ b/nls.c
@@ -3,9 +3,13 @@
  * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
  */
 
+#include <linux/version.h>
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/buffer_head.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0)
+#include <linux/vmalloc.h>
+#endif
 #include <asm/unaligned.h>
 
 #include "exfat_raw.h"
@@ -659,7 +663,11 @@ static int exfat_load_upcase_table(struct super_block *sb,
 	unsigned char skip = false;
 	unsigned short *upcase_table;
 
-	upcase_table = kcalloc(UTBL_COUNT, sizeof(unsigned short), GFP_KERNEL);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 18, 0)
+	upcase_table = kvcalloc(UTBL_COUNT, sizeof(unsigned short), GFP_KERNEL);
+#else
+	upcase_table = vzalloc(UTBL_COUNT * sizeof(unsigned short));
+#endif
 	if (!upcase_table)
 		return -ENOMEM;
 
@@ -715,7 +723,11 @@ static int exfat_load_default_upcase_table(struct super_block *sb)
 	unsigned short uni = 0, *upcase_table;
 	unsigned int index = 0;
 
-	upcase_table = kcalloc(UTBL_COUNT, sizeof(unsigned short), GFP_KERNEL);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 18, 0)
+	upcase_table = kvcalloc(UTBL_COUNT, sizeof(unsigned short), GFP_KERNEL);
+#else
+	upcase_table = vzalloc(UTBL_COUNT * sizeof(unsigned short));
+#endif
 	if (!upcase_table)
 		return -ENOMEM;
 
@@ -803,5 +815,9 @@ load_default:
 
 void exfat_free_upcase_table(struct exfat_sb_info *sbi)
 {
-	kfree(sbi->vol_utbl);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 18, 0)
+	kvfree(sbi->vol_utbl);
+#else
+	vfree(sbi->vol_utbl);
+#endif
 }