diff options
| author | Ben Hutchings <ben@decadent.org.uk> | 2022-01-24 14:38:28 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-27 08:47:42 +0100 |
| commit | 6fbb8383884f2c89f4c7e2c8603b5ed1b90b815f (patch) | |
| tree | 7904fbf9d6dbf809f5346b84dde949826416228d /lib/timerqueue.c | |
| parent | 31f961674d04bfec4718296d8ecf59537251270b (diff) | |
Revert "gup: document and work around "COW can break either way" issue"
This reverts commit 9bbd42e79720122334226afad9ddcac1c3e6d373, which
was commit 17839856fd588f4ab6b789f482ed3ffd7c403e1f upstream. The
backport was incorrect and incomplete:
* It forced the write flag on in the generic __get_user_pages_fast(),
whereas only get_user_pages_fast() was supposed to do that.
* It only fixed the generic RCU-based implementation used by arm,
arm64, and powerpc. Before Linux 4.13, several other architectures
had their own implementations: mips, s390, sparc, sh, and x86.
This will be followed by a (hopefully) correct backport.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/timerqueue.c')
0 files changed, 0 insertions, 0 deletions