[PATCH 0/3] kernel/watch_queue: Clean up some code

[Siddh Raman Pant <code@siddh.me>]

There is a dangling reference to pipe in a watch_queue after clearing it.
Thus, NULL that pointer while clearing. This can be thought of as a v4 of
the patches I had sent earlier.

This change renders wqueue->defunct superfluous, as the latter is only used
to check if watch_queue is cleared. With this change, the pipe is NULL'd
while clearing, so we can just check if the pipe is NULL.

Extending comment for watch_queue->pipe in the definition of watch_queue
made the comment conventionally too long (it was already past 80 chars),
so I have changed the struct annotations to be doxygen-styled, so that
I can extend the comment mentioning that the pipe is NULL when watch_queue
is cleared.

Siddh Raman Pant (3):
  kernel/watch_queue: Remove dangling pipe reference while clearing
    watch_queue
  kernel/watch_queue: Improve struct annotation formatting
  kernel/watch_queue: Remove wqueue->defunct and use pipe for clear
    check

 include/linux/watch_queue.h | 95 +++++++++++++++++++++++++++----------
 kernel/watch_queue.c        | 11 ++---
 2 files changed, 75 insertions(+), 31 deletions(-)

-- 
2.35.1