FANOTIFY_EVENT_HASH_BITS
return hash_ptr(path->dentry, FANOTIFY_EVENT_HASH_BITS) ^
hash_ptr(path->mnt, FANOTIFY_EVENT_HASH_BITS);
return hash_32(fsid->val[0], FANOTIFY_EVENT_HASH_BITS) ^
hash_32(fsid->val[1], FANOTIFY_EVENT_HASH_BITS);
hash ^= hash_long((unsigned long)pid | ondir, FANOTIFY_EVENT_HASH_BITS);
unsigned int hash : FANOTIFY_EVENT_HASH_BITS;