linux-kernel - [PATCH 0/3] Reduce mmap_sem usage for args manipulation

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Message-Id: <20190430081844.22597-1-mkoutny@suse.com>
Date:   Tue, 30 Apr 2019 10:18:41 +0200
From:   Michal Koutný <mkoutny@...e.com>
To:     gorcunov@...il.com
Cc:     akpm@...ux-foundation.org, arunks@...eaurora.org, brgl@...ev.pl,
        geert+renesas@...der.be, ldufour@...ux.ibm.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        mguzik@...hat.com, mhocko@...nel.org, mkoutny@...e.com,
        rppt@...ux.ibm.com, vbabka@...e.cz, ktkhai@...tuozzo.com
Subject: [PATCH 0/3] Reduce mmap_sem usage for args manipulation

Hello.

(apologies for late reply) I've aggregated the two previously discussed patches
into one series and based on responses made some changes summed below.

v2
- insert a patch refactoring validate_prctl_map
- move find_vma out of the arg_lock critical section


Michal Koutný (3):
  mm: get_cmdline use arg_lock instead of mmap_sem
  prctl_set_mm: Refactor checks from validate_prctl_map
  prctl_set_mm: downgrade mmap_sem to read lock

 kernel/sys.c | 55 ++++++++++++++++++++++++++++---------------------------
 mm/util.c    |  4 ++--
 2 files changed, 30 insertions(+), 29 deletions(-)

-- 
2.16.4