[PATCH 0/2] mm: Clean up and document fault and RETRY mmap_sem

[Steven Rostedt <rostedt@goodmis.org>]

On IRC, Russell King noticed that the code in arch/x86/mm/fault.c
looked buggy with the retry loop and retaking the mmap_sem. But
with further investigation it seems to be correct, but now
handle_mm_fault() has subtle locking with the mmap_sem depending
on what flags are set.

Unfortunately, there's no good comments about what is going on in the
code. Doing various git blame, git show, I dug up the history
and cleaned up the RETRY_NOWAIT and added documentation to the
handle_mm_fault().


Steven Rostedt (2):
      mm: Remove use of ALLOW_RETRY when RETRY_NOWAIT is set
      mm: Document handle_mm_fault()

----
 include/linux/mm.h |    4 ++--
 mm/filemap.c       |   14 +++++++-------
 mm/memory.c        |   24 +++++++++++++++++++++---
 3 files changed, 30 insertions(+), 12 deletions(-)