| commit | cde70140fed8429acf7a14e2e2cbd3e329036653 | [log] [tgz] |
|---|---|---|
| author | Dave Hansen <[email protected]> | Fri Feb 12 13:01:55 2016 -0800 |
| committer | Ingo Molnar <[email protected]> | Tue Feb 16 10:11:12 2016 +0100 |
| tree | aa684e9cae39005e66ab4b7d2b801beade6fa9ab | |
| parent | 1e9877902dc7e11d2be038371c6fbf2dfcd469d7 [diff] |
mm/gup: Overload get_user_pages() functions The concept here was a suggestion from Ingo. The implementation horrors are all mine. This allows get_user_pages(), get_user_pages_unlocked(), and get_user_pages_locked() to be called with or without the leading tsk/mm arguments. We will give a compile-time warning about the old style being __deprecated and we will also WARN_ON() if the non-remote version is used for a remote-style access. Doing this, folks will get nice warnings and will not break the build. This should be nice for -next and will hopefully let developers fix up their own code instead of maintainers needing to do it at merge time. The way we do this is hideous. It uses the __VA_ARGS__ macro functionality to call different functions based on the number of arguments passed to the macro. There's an additional hack to ensure that our EXPORT_SYMBOL() of the deprecated symbols doesn't trigger a warning. We should be able to remove this mess as soon as -rc1 hits in the release after this is merged. Signed-off-by: Dave Hansen <[email protected]> Cc: Al Viro <[email protected]> Cc: Alexander Kuleshov <[email protected]> Cc: Andrea Arcangeli <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Dan Williams <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Dominik Dingel <[email protected]> Cc: Geliang Tang <[email protected]> Cc: Jan Kara <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Konstantin Khlebnikov <[email protected]> Cc: Leon Romanovsky <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Masahiro Yamada <[email protected]> Cc: Mateusz Guzik <[email protected]> Cc: Maxime Coquelin <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Naoya Horiguchi <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Paul Gortmaker <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Srikar Dronamraju <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Vladimir Davydov <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Xie XiuQi <[email protected]> Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>