doubt regarding kmalloc() in fs/super.c

["anand muttagi" <avmuttagi@xxxxxxxxx>]

The code shown below is
present in alloc_super() in fs/super.c.In this code kmalloc() is used to
allocate memory for super_block structure.
Which flag(type flag) should be passed in kmalloc()?
since this code is executed in kernel space.
why can't we use GFP_KERNEL instead of GFP_USER?


struct super_block *s = kmalloc(sizeof(struct super_block),  GFP_USER);
    static struct super_operations default_op;

    if (s) {
        memset(s, 0, sizeof(struct super_block));
        if (security_sb_alloc(s)) {
            kfree(s);
            s = NULL;
            goto out;
        }