I fail to see how anyone could interpret what can only refer to holding the line as not a heroic act and a military metaphor. And that’s how it’s used, and that’s what it means, and that’s where it comes from.
And Ts’o clearly knows this as well, since it he appropriately uses it as a metaphor for keeping chaos at bay and out of the kernel.
That’s highly subjective. Remember this is a global resource with environments different from your own.
I fail to see how anyone could interpret what can only refer to holding the line as not a heroic act and a military metaphor. And that’s how it’s used, and that’s what it means, and that’s where it comes from.
And Ts’o clearly knows this as well, since it he appropriately uses it as a metaphor for keeping chaos at bay and out of the kernel.
In the same way a swastika is no longer linked to an ancient peace symbol.