diff --git a/linux/32/ioctls_inc_align16.h b/linux/32/ioctls_inc_align16.h
index 2dc2e73c..0bf90180 100644
--- a/linux/32/ioctls_inc_align16.h
+++ b/linux/32/ioctls_inc_align16.h
@@ -614,7 +614,6 @@
 { "linux/btrfs.h", "BTRFS_IOC_FS_INFO", _IOC_READ, 0x941f, 0x400 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_DEV_STATS", _IOC_READ|_IOC_WRITE, 0x9434, 0x408 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_FEATURES", _IOC_READ, 0x9439, 0x18 },
-{ "linux/btrfs.h", "BTRFS_IOC_GET_FSLABEL", _IOC_READ, 0x9431, 0x100 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_SUPPORTED_FEATURES", _IOC_READ, 0x9439, 0x48 },
 { "linux/btrfs.h", "BTRFS_IOC_INO_LOOKUP", _IOC_READ|_IOC_WRITE, 0x9412, 0x1000 },
 { "linux/btrfs.h", "BTRFS_IOC_INO_PATHS", _IOC_READ|_IOC_WRITE, 0x9423, 0x38 },
@@ -636,7 +635,6 @@
 { "linux/btrfs.h", "BTRFS_IOC_SCRUB_PROGRESS", _IOC_READ|_IOC_WRITE, 0x941d, 0x400 },
 { "linux/btrfs.h", "BTRFS_IOC_SEND", _IOC_WRITE, 0x9426, 0x44 },
 { "linux/btrfs.h", "BTRFS_IOC_SET_FEATURES", _IOC_WRITE, 0x9439, 0x30 },
-{ "linux/btrfs.h", "BTRFS_IOC_SET_FSLABEL", _IOC_WRITE, 0x9432, 0x100 },
 { "linux/btrfs.h", "BTRFS_IOC_SET_RECEIVED_SUBVOL", _IOC_READ|_IOC_WRITE, 0x9425, 0xc0 },
 { "linux/btrfs.h", "BTRFS_IOC_SNAP_CREATE", _IOC_WRITE, 0x9401, 0x1000 },
 { "linux/btrfs.h", "BTRFS_IOC_SNAP_CREATE_V2", _IOC_WRITE, 0x9417, 0x1000 },
@@ -985,10 +983,12 @@
 { "linux/fs.h", "FS_IOC_FSGETXATTR", _IOC_READ, 0x581f, 0x1c },
 { "linux/fs.h", "FS_IOC_FSSETXATTR", _IOC_WRITE, 0x5820, 0x1c },
 { "linux/fs.h", "FS_IOC_GETFLAGS", _IOC_READ, 0x6601, 0x04 },
+{ "linux/fs.h", "FS_IOC_GETFSLABEL", _IOC_READ, 0x9431, 0x100 },
 { "linux/fs.h", "FS_IOC_GETVERSION", _IOC_READ, 0x7601, 0x04 },
 { "linux/fs.h", "FS_IOC_GET_ENCRYPTION_POLICY", _IOC_WRITE, 0x6615, 0x0c },
 { "linux/fs.h", "FS_IOC_GET_ENCRYPTION_PWSALT", _IOC_WRITE, 0x6614, 0x10 },
 { "linux/fs.h", "FS_IOC_SETFLAGS", _IOC_WRITE, 0x6602, 0x04 },
+{ "linux/fs.h", "FS_IOC_SETFSLABEL", _IOC_WRITE, 0x9432, 0x100 },
 { "linux/fs.h", "FS_IOC_SETVERSION", _IOC_WRITE, 0x7602, 0x04 },
 { "linux/fs.h", "FS_IOC_SET_ENCRYPTION_POLICY", _IOC_READ, 0x6613, 0x0c },
 { "linux/fsl-diu-fb.h", "MFB_GET_ALPHA", _IOC_READ, 0x4d00, 0x01 },
diff --git a/linux/32/ioctls_inc_align32.h b/linux/32/ioctls_inc_align32.h
index f9cc3407..fe4356a7 100644
--- a/linux/32/ioctls_inc_align32.h
+++ b/linux/32/ioctls_inc_align32.h
@@ -614,7 +614,6 @@
 { "linux/btrfs.h", "BTRFS_IOC_FS_INFO", _IOC_READ, 0x941f, 0x400 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_DEV_STATS", _IOC_READ|_IOC_WRITE, 0x9434, 0x408 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_FEATURES", _IOC_READ, 0x9439, 0x18 },
-{ "linux/btrfs.h", "BTRFS_IOC_GET_FSLABEL", _IOC_READ, 0x9431, 0x100 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_SUPPORTED_FEATURES", _IOC_READ, 0x9439, 0x48 },
 { "linux/btrfs.h", "BTRFS_IOC_INO_LOOKUP", _IOC_READ|_IOC_WRITE, 0x9412, 0x1000 },
 { "linux/btrfs.h", "BTRFS_IOC_INO_PATHS", _IOC_READ|_IOC_WRITE, 0x9423, 0x38 },
@@ -636,7 +635,6 @@
 { "linux/btrfs.h", "BTRFS_IOC_SCRUB_PROGRESS", _IOC_READ|_IOC_WRITE, 0x941d, 0x400 },
 { "linux/btrfs.h", "BTRFS_IOC_SEND", _IOC_WRITE, 0x9426, 0x44 },
 { "linux/btrfs.h", "BTRFS_IOC_SET_FEATURES", _IOC_WRITE, 0x9439, 0x30 },
-{ "linux/btrfs.h", "BTRFS_IOC_SET_FSLABEL", _IOC_WRITE, 0x9432, 0x100 },
 { "linux/btrfs.h", "BTRFS_IOC_SET_RECEIVED_SUBVOL", _IOC_READ|_IOC_WRITE, 0x9425, 0xc0 },
 { "linux/btrfs.h", "BTRFS_IOC_SNAP_CREATE", _IOC_WRITE, 0x9401, 0x1000 },
 { "linux/btrfs.h", "BTRFS_IOC_SNAP_CREATE_V2", _IOC_WRITE, 0x9417, 0x1000 },
@@ -985,10 +983,12 @@
 { "linux/fs.h", "FS_IOC_FSGETXATTR", _IOC_READ, 0x581f, 0x1c },
 { "linux/fs.h", "FS_IOC_FSSETXATTR", _IOC_WRITE, 0x5820, 0x1c },
 { "linux/fs.h", "FS_IOC_GETFLAGS", _IOC_READ, 0x6601, 0x04 },
+{ "linux/fs.h", "FS_IOC_GETFSLABEL", _IOC_READ, 0x9431, 0x100 },
 { "linux/fs.h", "FS_IOC_GETVERSION", _IOC_READ, 0x7601, 0x04 },
 { "linux/fs.h", "FS_IOC_GET_ENCRYPTION_POLICY", _IOC_WRITE, 0x6615, 0x0c },
 { "linux/fs.h", "FS_IOC_GET_ENCRYPTION_PWSALT", _IOC_WRITE, 0x6614, 0x10 },
 { "linux/fs.h", "FS_IOC_SETFLAGS", _IOC_WRITE, 0x6602, 0x04 },
+{ "linux/fs.h", "FS_IOC_SETFSLABEL", _IOC_WRITE, 0x9432, 0x100 },
 { "linux/fs.h", "FS_IOC_SETVERSION", _IOC_WRITE, 0x7602, 0x04 },
 { "linux/fs.h", "FS_IOC_SET_ENCRYPTION_POLICY", _IOC_READ, 0x6613, 0x0c },
 { "linux/fsl-diu-fb.h", "MFB_GET_ALPHA", _IOC_READ, 0x4d00, 0x01 },
diff --git a/linux/32/ioctls_inc_align64.h b/linux/32/ioctls_inc_align64.h
index 22a8ab5d..bc269887 100644
--- a/linux/32/ioctls_inc_align64.h
+++ b/linux/32/ioctls_inc_align64.h
@@ -614,7 +614,6 @@
 { "linux/btrfs.h", "BTRFS_IOC_FS_INFO", _IOC_READ, 0x941f, 0x400 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_DEV_STATS", _IOC_READ|_IOC_WRITE, 0x9434, 0x408 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_FEATURES", _IOC_READ, 0x9439, 0x18 },
-{ "linux/btrfs.h", "BTRFS_IOC_GET_FSLABEL", _IOC_READ, 0x9431, 0x100 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_SUPPORTED_FEATURES", _IOC_READ, 0x9439, 0x48 },
 { "linux/btrfs.h", "BTRFS_IOC_INO_LOOKUP", _IOC_READ|_IOC_WRITE, 0x9412, 0x1000 },
 { "linux/btrfs.h", "BTRFS_IOC_INO_PATHS", _IOC_READ|_IOC_WRITE, 0x9423, 0x38 },
@@ -636,7 +635,6 @@
 { "linux/btrfs.h", "BTRFS_IOC_SCRUB_PROGRESS", _IOC_READ|_IOC_WRITE, 0x941d, 0x400 },
 { "linux/btrfs.h", "BTRFS_IOC_SEND", _IOC_WRITE, 0x9426, 0x48 },
 { "linux/btrfs.h", "BTRFS_IOC_SET_FEATURES", _IOC_WRITE, 0x9439, 0x30 },
-{ "linux/btrfs.h", "BTRFS_IOC_SET_FSLABEL", _IOC_WRITE, 0x9432, 0x100 },
 { "linux/btrfs.h", "BTRFS_IOC_SET_RECEIVED_SUBVOL", _IOC_READ|_IOC_WRITE, 0x9425, 0xc8 },
 { "linux/btrfs.h", "BTRFS_IOC_SNAP_CREATE", _IOC_WRITE, 0x9401, 0x1000 },
 { "linux/btrfs.h", "BTRFS_IOC_SNAP_CREATE_V2", _IOC_WRITE, 0x9417, 0x1000 },
@@ -985,10 +983,12 @@
 { "linux/fs.h", "FS_IOC_FSGETXATTR", _IOC_READ, 0x581f, 0x1c },
 { "linux/fs.h", "FS_IOC_FSSETXATTR", _IOC_WRITE, 0x5820, 0x1c },
 { "linux/fs.h", "FS_IOC_GETFLAGS", _IOC_READ, 0x6601, 0x04 },
+{ "linux/fs.h", "FS_IOC_GETFSLABEL", _IOC_READ, 0x9431, 0x100 },
 { "linux/fs.h", "FS_IOC_GETVERSION", _IOC_READ, 0x7601, 0x04 },
 { "linux/fs.h", "FS_IOC_GET_ENCRYPTION_POLICY", _IOC_WRITE, 0x6615, 0x0c },
 { "linux/fs.h", "FS_IOC_GET_ENCRYPTION_PWSALT", _IOC_WRITE, 0x6614, 0x10 },
 { "linux/fs.h", "FS_IOC_SETFLAGS", _IOC_WRITE, 0x6602, 0x04 },
+{ "linux/fs.h", "FS_IOC_SETFSLABEL", _IOC_WRITE, 0x9432, 0x100 },
 { "linux/fs.h", "FS_IOC_SETVERSION", _IOC_WRITE, 0x7602, 0x04 },
 { "linux/fs.h", "FS_IOC_SET_ENCRYPTION_POLICY", _IOC_READ, 0x6613, 0x0c },
 { "linux/fsl-diu-fb.h", "MFB_GET_ALPHA", _IOC_READ, 0x4d00, 0x01 },
diff --git a/linux/64/ioctls_inc.h b/linux/64/ioctls_inc.h
index e4b4a664..bc09c992 100644
--- a/linux/64/ioctls_inc.h
+++ b/linux/64/ioctls_inc.h
@@ -614,7 +614,6 @@
 { "linux/btrfs.h", "BTRFS_IOC_FS_INFO", _IOC_READ, 0x941f, 0x400 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_DEV_STATS", _IOC_READ|_IOC_WRITE, 0x9434, 0x408 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_FEATURES", _IOC_READ, 0x9439, 0x18 },
-{ "linux/btrfs.h", "BTRFS_IOC_GET_FSLABEL", _IOC_READ, 0x9431, 0x100 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_SUPPORTED_FEATURES", _IOC_READ, 0x9439, 0x48 },
 { "linux/btrfs.h", "BTRFS_IOC_INO_LOOKUP", _IOC_READ|_IOC_WRITE, 0x9412, 0x1000 },
 { "linux/btrfs.h", "BTRFS_IOC_INO_PATHS", _IOC_READ|_IOC_WRITE, 0x9423, 0x38 },
@@ -636,7 +635,6 @@
 { "linux/btrfs.h", "BTRFS_IOC_SCRUB_PROGRESS", _IOC_READ|_IOC_WRITE, 0x941d, 0x400 },
 { "linux/btrfs.h", "BTRFS_IOC_SEND", _IOC_WRITE, 0x9426, 0x48 },
 { "linux/btrfs.h", "BTRFS_IOC_SET_FEATURES", _IOC_WRITE, 0x9439, 0x30 },
-{ "linux/btrfs.h", "BTRFS_IOC_SET_FSLABEL", _IOC_WRITE, 0x9432, 0x100 },
 { "linux/btrfs.h", "BTRFS_IOC_SET_RECEIVED_SUBVOL", _IOC_READ|_IOC_WRITE, 0x9425, 0xc8 },
 { "linux/btrfs.h", "BTRFS_IOC_SNAP_CREATE", _IOC_WRITE, 0x9401, 0x1000 },
 { "linux/btrfs.h", "BTRFS_IOC_SNAP_CREATE_V2", _IOC_WRITE, 0x9417, 0x1000 },
@@ -985,10 +983,12 @@
 { "linux/fs.h", "FS_IOC_FSGETXATTR", _IOC_READ, 0x581f, 0x1c },
 { "linux/fs.h", "FS_IOC_FSSETXATTR", _IOC_WRITE, 0x5820, 0x1c },
 { "linux/fs.h", "FS_IOC_GETFLAGS", _IOC_READ, 0x6601, 0x08 },
+{ "linux/fs.h", "FS_IOC_GETFSLABEL", _IOC_READ, 0x9431, 0x100 },
 { "linux/fs.h", "FS_IOC_GETVERSION", _IOC_READ, 0x7601, 0x08 },
 { "linux/fs.h", "FS_IOC_GET_ENCRYPTION_POLICY", _IOC_WRITE, 0x6615, 0x0c },
 { "linux/fs.h", "FS_IOC_GET_ENCRYPTION_PWSALT", _IOC_WRITE, 0x6614, 0x10 },
 { "linux/fs.h", "FS_IOC_SETFLAGS", _IOC_WRITE, 0x6602, 0x08 },
+{ "linux/fs.h", "FS_IOC_SETFSLABEL", _IOC_WRITE, 0x9432, 0x100 },
 { "linux/fs.h", "FS_IOC_SETVERSION", _IOC_WRITE, 0x7602, 0x08 },
 { "linux/fs.h", "FS_IOC_SET_ENCRYPTION_POLICY", _IOC_READ, 0x6613, 0x0c },
 { "linux/fsl-diu-fb.h", "MFB_GET_ALPHA", _IOC_READ, 0x4d00, 0x01 },
diff --git a/linux/x32/ioctls_inc0.h b/linux/x32/ioctls_inc0.h
index 1d9c6f38..3db6ef8d 100644
--- a/linux/x32/ioctls_inc0.h
+++ b/linux/x32/ioctls_inc0.h
@@ -614,7 +614,6 @@
 { "linux/btrfs.h", "BTRFS_IOC_FS_INFO", _IOC_READ, 0x941f, 0x400 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_DEV_STATS", _IOC_READ|_IOC_WRITE, 0x9434, 0x408 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_FEATURES", _IOC_READ, 0x9439, 0x18 },
-{ "linux/btrfs.h", "BTRFS_IOC_GET_FSLABEL", _IOC_READ, 0x9431, 0x100 },
 { "linux/btrfs.h", "BTRFS_IOC_GET_SUPPORTED_FEATURES", _IOC_READ, 0x9439, 0x48 },
 { "linux/btrfs.h", "BTRFS_IOC_INO_LOOKUP", _IOC_READ|_IOC_WRITE, 0x9412, 0x1000 },
 { "linux/btrfs.h", "BTRFS_IOC_INO_PATHS", _IOC_READ|_IOC_WRITE, 0x9423, 0x38 },
@@ -636,7 +635,6 @@
 { "linux/btrfs.h", "BTRFS_IOC_SCRUB_PROGRESS", _IOC_READ|_IOC_WRITE, 0x941d, 0x400 },
 { "linux/btrfs.h", "BTRFS_IOC_SEND", _IOC_WRITE, 0x9426, 0x48 },
 { "linux/btrfs.h", "BTRFS_IOC_SET_FEATURES", _IOC_WRITE, 0x9439, 0x30 },
-{ "linux/btrfs.h", "BTRFS_IOC_SET_FSLABEL", _IOC_WRITE, 0x9432, 0x100 },
 { "linux/btrfs.h", "BTRFS_IOC_SET_RECEIVED_SUBVOL", _IOC_READ|_IOC_WRITE, 0x9425, 0xc8 },
 { "linux/btrfs.h", "BTRFS_IOC_SNAP_CREATE", _IOC_WRITE, 0x9401, 0x1000 },
 { "linux/btrfs.h", "BTRFS_IOC_SNAP_CREATE_V2", _IOC_WRITE, 0x9417, 0x1000 },
@@ -985,10 +983,12 @@
 { "linux/fs.h", "FS_IOC_FSGETXATTR", _IOC_READ, 0x581f, 0x1c },
 { "linux/fs.h", "FS_IOC_FSSETXATTR", _IOC_WRITE, 0x5820, 0x1c },
 { "linux/fs.h", "FS_IOC_GETFLAGS", _IOC_READ, 0x6601, 0x04 },
+{ "linux/fs.h", "FS_IOC_GETFSLABEL", _IOC_READ, 0x9431, 0x100 },
 { "linux/fs.h", "FS_IOC_GETVERSION", _IOC_READ, 0x7601, 0x04 },
 { "linux/fs.h", "FS_IOC_GET_ENCRYPTION_POLICY", _IOC_WRITE, 0x6615, 0x0c },
 { "linux/fs.h", "FS_IOC_GET_ENCRYPTION_PWSALT", _IOC_WRITE, 0x6614, 0x10 },
 { "linux/fs.h", "FS_IOC_SETFLAGS", _IOC_WRITE, 0x6602, 0x04 },
+{ "linux/fs.h", "FS_IOC_SETFSLABEL", _IOC_WRITE, 0x9432, 0x100 },
 { "linux/fs.h", "FS_IOC_SETVERSION", _IOC_WRITE, 0x7602, 0x04 },
 { "linux/fs.h", "FS_IOC_SET_ENCRYPTION_POLICY", _IOC_READ, 0x6613, 0x0c },
 { "linux/fsl-diu-fb.h", "MFB_GET_ALPHA", _IOC_READ, 0x4d00, 0x01 },
diff --git a/maint/ioctls_sym.sh b/maint/ioctls_sym.sh
index 81ee631d..b63ef716 100755
--- a/maint/ioctls_sym.sh
+++ b/maint/ioctls_sym.sh
@@ -393,6 +393,10 @@ s/^\([[:space:]]\+[^),]\+)\),$/\1/' >> "$tmpdir/$f"
 
 	# Soft post-preprocess workarounds.  Fragile.
 	case "$f" in
+		*linux/btrfs.h)
+			sed -i '/[[:space:]]BTRFS_IOC_[GS]ET_FSLABEL[[:space:]]/d' \
+				"$tmpdir"/header.out
+			;;
 		*linux/kvm.h)
 			arm_list='KVM_ARM_[A-Z_]+'
 			ppc_list='KVM_ALLOCATE_RMA|KVM_CREATE_SPAPR_TCE|KVM_CREATE_SPAPR_TCE_64|KVM_PPC_[A-Z1-9_]+'
diff --git a/tests/btrfs.c b/tests/btrfs.c
index b44bc872..f23d7c0a 100644
--- a/tests/btrfs.c
+++ b/tests/btrfs.c
@@ -54,6 +54,14 @@
 # define BTRFS_NAME_LEN 255
 #endif
 
+#ifndef FS_IOC_GETFSLABEL
+# define FS_IOC_GETFSLABEL BTRFS_IOC_GET_FSLABEL
+#endif
+
+#ifndef FS_IOC_SETFSLABEL
+# define FS_IOC_SETFSLABEL BTRFS_IOC_SET_FSLABEL
+#endif
+
 /*
  * Prior to Linux 3.12, the BTRFS_IOC_DEFAULT_SUBVOL used u64 in
  * its definition, which isn't exported by the kernel.
@@ -1650,32 +1658,32 @@ btrfs_test_quota_rescan_ioctl(void)
 
 /*
  * Consumes argument, returns nothing:
- * - BTRFS_IOC_SET_FSLABEL
+ * - FS_IOC_SETFSLABEL
  *
  * Consumes no argument, returns argument:
- * - BTRFS_IOC_GET_FS_LABEL
+ * - FS_IOC_GETFSLABEL
  */
 static void
 btrfs_test_label_ioctls(void)
 {
 	char label[BTRFS_LABEL_SIZE] = "btrfs-label";
 
-	ioctl(-1, BTRFS_IOC_SET_FSLABEL, NULL);
+	ioctl(-1, FS_IOC_SETFSLABEL, NULL);
 	printf("ioctl(-1, %s, NULL) = -1 EBADF (%m)\n",
-	       ioc(BTRFS_IOC_SET_FSLABEL));
+	       ioc(FS_IOC_SETFSLABEL));
 
-	ioctl(-1, BTRFS_IOC_SET_FSLABEL, label);
+	ioctl(-1, FS_IOC_SETFSLABEL, label);
 	printf("ioctl(-1, %s, \"%s\") = -1 EBADF (%m)\n",
-	       ioc(BTRFS_IOC_SET_FSLABEL), label);
+	       ioc(FS_IOC_SETFSLABEL), label);
 
 	if (write_ok) {
-		ioctl(btrfs_test_dir_fd, BTRFS_IOC_SET_FSLABEL, label);
+		ioctl(btrfs_test_dir_fd, FS_IOC_SETFSLABEL, label);
 		printf("ioctl(%d, %s, \"%s\") = 0\n",
-			btrfs_test_dir_fd, ioc(BTRFS_IOC_SET_FSLABEL), label);
+			btrfs_test_dir_fd, ioc(FS_IOC_SETFSLABEL), label);
 
-		ioctl(btrfs_test_dir_fd, BTRFS_IOC_GET_FSLABEL, label);
+		ioctl(btrfs_test_dir_fd, FS_IOC_GETFSLABEL, label);
 		printf("ioctl(%d, %s, \"%s\") = 0\n",
-			btrfs_test_dir_fd, ioc(BTRFS_IOC_GET_FSLABEL), label);
+			btrfs_test_dir_fd, ioc(FS_IOC_GETFSLABEL), label);
 	}
 }
 
@@ -2025,7 +2033,7 @@ btrfs_test_read_ioctls(void)
 		XLAT(BTRFS_IOC_BALANCE_PROGRESS),
 		XLAT(BTRFS_IOC_FS_INFO),
 		XLAT(BTRFS_IOC_GET_FEATURES),
-		XLAT(BTRFS_IOC_GET_FSLABEL),
+		XLAT(FS_IOC_GETFSLABEL),
 		XLAT(BTRFS_IOC_GET_SUPPORTED_FEATURES),
 		XLAT(BTRFS_IOC_QGROUP_LIMIT),
 		XLAT(BTRFS_IOC_QUOTA_RESCAN_STATUS),