linux-kernel - [PATCH v2 0/2] prevent mincore() page cache leaks

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Date:   Tue, 12 Mar 2019 15:17:06 +0100
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Jann Horn <jannh@...gle.com>, Michal Hocko <mhocko@...nel.org>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        linux-api@...r.kernel.org, Vlastimil Babka <vbabka@...e.cz>,
        Andy Lutomirski <luto@...capital.net>,
        Cyril Hrubis <chrubis@...e.cz>, Daniel Gruss <daniel@...ss.cc>,
        Dave Chinner <david@...morbit.com>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        Jiri Kosina <jikos@...nel.org>, Jiri Kosina <jkosina@...e.cz>,
        Josh Snyder <joshs@...flix.com>,
        Kevin Easton <kevin@...rana.org>,
        "Kirill A. Shutemov" <kirill@...temov.name>,
        Matthew Wilcox <willy@...radead.org>,
        Michal Hocko <mhocko@...e.com>, Tejun Heo <tj@...nel.org>
Subject: [PATCH v2 0/2] prevent mincore() page cache leaks

Here's a new version of the mincore() patches, with feedback from Andrew Morton
applied. The IOCB_NOWAIT patch was dropped since David Chinner pointed out it's
incomplete. We definitely want the first patch, while for the second Linus
said:

  I think that's fine, and probably the right thing to do, but I also
  suspect that nobody actually cares ;(

Whether or not somebody cares, we should hear of no breakage. If somebody does
care after all, without second patch we might hear of breakage, so I would
suggest applying it. It's not that complicated after all (famous last words?)


Jiri Kosina (1):
  mm/mincore: make mincore() more conservative

Vlastimil Babka (1):
  mm/mincore: provide mapped status when cached status is not allowed

 mm/mincore.c | 80 ++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 68 insertions(+), 12 deletions(-)

-- 
2.20.1