[PATCH v2 0/4] lockdep/crossrelease: Apply crossrelease to page locks

Byungchul Park <byungchul.park@xxxxxxx> · Mon, 4 Dec 2017 14:16:19 +0900

For now, wait_for_completion() / complete() works with lockdep, add
lock_page() / unlock_page() and its family to lockdep support.

Changes from v1
 - Move lockdep_map_cross outside of page_ext to make it flexible
 - Prevent allocating lockdep_map per page by default
 - Add a boot parameter allowing the allocation for debugging

Byungchul Park (4):
  lockdep: Apply crossrelease to PG_locked locks
  lockdep: Apply lock_acquire(release) on __Set(__Clear)PageLocked
  lockdep: Move data of CONFIG_LOCKDEP_PAGELOCK from page to page_ext
  lockdep: Add a boot parameter enabling to track page locks using
    lockdep and disable it by default

 Documentation/admin-guide/kernel-parameters.txt |   7 ++
 include/linux/mm_types.h                        |   4 +
 include/linux/page-flags.h                      |  43 +++++++-
 include/linux/pagemap.h                         | 125 ++++++++++++++++++++++--
 lib/Kconfig.debug                               |  11 +++
 mm/filemap.c                                    | 114 ++++++++++++++++++++-
 mm/page_ext.c                                   |   4 +
 7 files changed, 299 insertions(+), 9 deletions(-)

-- 
1.9.1