tree d9a171d4c37e349dde27337dc81c6c69444c2bb3
parent 1e16624d7b4376797ede36e3c955375cf0f23298
author Mel Gorman <mgorman@techsingularity.net> 1625478677 +0100
committer Linus Torvalds <torvalds@linux-foundation.org> 1625958579 -0700

mm/page_alloc: Revert pahole zero-sized workaround

Commit dbbee9d5cd83 ("mm/page_alloc: convert per-cpu list protection to
local_lock") folded in a workaround patch for pahole that was unable to
deal with zero-sized percpu structures.

A superior workaround is achieved with commit a0b8200d06ad ("kbuild:
skip per-CPU BTF generation for pahole v1.18-v1.21").

This patch reverts the dummy field and the pahole version check.

Fixes: dbbee9d5cd83 ("mm/page_alloc: convert per-cpu list protection to local_lock")
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>