linux-kernel - [PATCHv6 0/6] zram: introduce writeback bio batching

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251122074029.3948921-1-senozhatsky@chromium.org>
Date: Sat, 22 Nov 2025 16:40:23 +0900
From: Sergey Senozhatsky <senozhatsky@...omium.org>
To: Andrew Morton <akpm@...ux-foundation.org>,
	Minchan Kim <minchan@...nel.org>,
	Yuwen Chen <ywen.chen@...mail.com>,
	Richard Chang <richardycc@...gle.com>
Cc: Brian Geffon <bgeffon@...gle.com>,
	Fengyu Lian <licayy@...look.com>,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	linux-block@...r.kernel.org,
	Sergey Senozhatsky <senozhatsky@...omium.org>
Subject: [PATCHv6 0/6] zram: introduce writeback bio batching

As writeback is becoming more and more common the longstanding
limitations of zram writeback throughput are becoming more
visible.  Introduce writeback bio batching so that multiple
writeback bio-s can be processed simultaneously.

v5 -> v6:
- added some comments to make code clearer
- use write lock for batch size limit store (Andrew)
- err on 0 batch size (Brian)
- pickup reviewed-by tags (Brian)

Sergey Senozhatsky (6):
  zram: introduce writeback bio batching
  zram: add writeback batch size device attr
  zram: take write lock in wb limit store handlers
  zram: drop wb_limit_lock
  zram: rework bdev block allocation
  zram: read slot block idx under slot lock

 drivers/block/zram/zram_drv.c | 471 ++++++++++++++++++++++++++--------
 drivers/block/zram/zram_drv.h |   2 +-
 2 files changed, 365 insertions(+), 108 deletions(-)

-- 
2.52.0.460.gd25c4c69ec-goog