UPSTREAM: mm: retire GUP WARN_ON_ONCE that outlived its usefulness
Trinity is now hitting the WARN_ON_ONCE we added in v3.15 commit
cda540ace6a1 ("mm: get_user_pages(write,force) refuse to COW in shared
areas"). The warning has served its purpose, nobody was harmed by that
change, so just remove the warning to generate less noise from Trinity.
Which reminds me of the comment I wrongly left behind with that commit
(but was spotted at the time by Kirill), which has since moved into a
separate function, and become even more obscure: delete it.
BUG=b:114517899
TEST=None
Change-Id: I2caee8df3a7c4330617cb9640d8deddfaea90f04
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Suggested-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 464353647427793aef800503ec42acb68e95d9e2)
Signed-off-by: Zubin Mithra <zsm@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1468322
Reviewed-by: Sean Paul <seanpaul@chromium.org>
2 files changed
