Update Linux to v5.4.148

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz

Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index f6d3c80..5c299e1 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -975,7 +975,9 @@
 {
 	int error = 0;
 	struct btrfs_device *dev;
+	unsigned int nofs_flag;
 
+	nofs_flag = memalloc_nofs_save();
 	list_for_each_entry(dev, &fs_devices->devices, dev_list) {
 		struct hd_struct *disk;
 		struct kobject *disk_kobj;
@@ -994,6 +996,7 @@
 		if (error)
 			break;
 	}
+	memalloc_nofs_restore(nofs_flag);
 
 	return error;
 }