On Fri, Dec 6, 2019 at 1:04 PM Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> It doesn't fix my "kernel compiles go single-threaded" issue.
I ended up just bisecting it.
The "make goes slow" problem bisects down to b667b8673443 ("pipe:
Advance tail pointer inside of wait spinlock in pipe_read()").
I assume it's the added "do_wakeup = 0" (not the spinlock) that ends
up having some subtle issue.
Very strange, but there it is.
Linus
