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Subject[PATCH 0/3][RFC] mm/page:_owner: track page free call chain


Page owner tracks a call chain that has allocated a page, this
patch set extends it with a PAGE_OWNER_TRACK_FREE functionality,
that now also tracks a call chain that has freed the page.

Page dump, thus, now has the following format:

a) page allocated backtrace
b) page free backtrace
c) backtrace of path that has trigger bad page

For a quick example of a case when this new b) part can make a
difference please see 0003.

Sergey Senozhatsky (3):
mm/page_owner: rename page_owner functions
mm/page_owner: rename PAGE_EXT_OWNER flag
mm/page_owner: track page free call chain

include/linux/page_ext.h | 15 ++++++-
include/linux/page_owner.h | 16 +++----
lib/Kconfig.debug | 10 +++++
mm/page_alloc.c | 4 +-
mm/page_owner.c | 110 +++++++++++++++++++++++++++++++--------------
mm/vmstat.c | 5 ++-
6 files changed, 113 insertions(+), 47 deletions(-)


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