Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Pengfei Li <lpf.vector@gmail.com>
To:     akpm@linux-foundation.org, peterz@infradead.org, urezki@gmail.com
Cc:     rpenyaev@suse.de, mhocko@suse.com, guro@fb.com,
        aryabinin@virtuozzo.com, rppt@linux.ibm.com, mingo@kernel.org,
        rick.p.edgecombe@intel.com, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, Pengfei Li <lpf.vector@gmail.com>
Subject: [PATCH v3 0/1] mm/vmalloc.c: improve readability and rewrite vmap_area
Date:   Thu,  4 Jul 2019 21:30:39 +0800
Message-Id: <20190704133040.5623-1-lpf.vector@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

v2 -> v3:
* patch 1-4: Abandoned
* patch 5:
  - Eliminate "flags" (suggested by Uladzislau Rezki)
  - Based on https://lkml.org/lkml/2019/6/6/455
    and https://lkml.org/lkml/2019/7/3/661

v1 -> v2:
* patch 3: Rename __find_vmap_area to __search_va_in_busy_tree
           instead of __search_va_from_busy_tree.
* patch 5: Add motivation and necessary test data to the commit
           message.
* patch 5: Let va->flags use only some low bits of va_start
           instead of completely overwriting va_start.

The current implementation of struct vmap_area wasted space.

After applying this commit, sizeof(struct vmap_area) has been
reduced from 11 words to 8 words.

Pengfei Li (1):
  Modify struct vmap_area to reduce its size

 include/linux/vmalloc.h | 20 +++++++++++++-------
 mm/vmalloc.c            | 24 ++++++++++--------------
 2 files changed, 23 insertions(+), 21 deletions(-)

-- 
2.21.0