mirror of
https://github.com/FEX-Emu/linux.git
synced 2025-01-11 11:56:48 +00:00
c97a9e10ea
Re-introduce rmap verification patches that Hugh removed when he removed PG_map_lock. PG_map_lock actually isn't needed to synchronise access to anonymous pages, because PG_locked and PTL together already do. These checks were important in discovering and fixing a rare rmap corruption in SLES9. Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>