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From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Minchan Kim <minchan@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	linux-kernel@vger.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Subject: [PATCH v2 0/8] zram: switch to crypto api
Date: Tue, 31 May 2016 21:20:09 +0900	[thread overview]
Message-ID: <20160531122017.2878-1-sergey.senozhatsky@gmail.com> (raw)

Hello,

  This has started as a 'add zlib support' work, but after some
thinking I saw no blockers for a bigger change -- a switch to
crypto API.

  We don't have an idle zstreams list anymore and our write path
now works absolutely differently, preventing preemption during
compression. This removes possibilities of read paths preempting
writes at wrong places and opens the door for a move from custom
LZO/LZ4 compression backends implementation to a more generic one,
using crypto compress API.

  This patch set also eliminates the need of a new context-less
crypto API interface, which was quite hard to sell, so we can
move along faster.

v2:
-- addressed Minchan's review points
-- allow out-of-tree comp algorithms, per Minchan
-- some other cleanups, reworks and improvements

Sergey Senozhatsky (8):
  zram: rename zstrm find-release functions
  zram: switch to crypto compress API
  zram: align zcomp interface to crypto comp API
  zram: use crypto api to check alg availability
  zram: cosmetic: cleanup documentation
  zram: delete custom lzo/lz4
  zram: add more compression algorithms
  zram: drop gfp_t from zcomp_strm_alloc()

 Documentation/blockdev/zram.txt |  82 +++++++++++++----------
 drivers/block/zram/Kconfig      |  15 +----
 drivers/block/zram/Makefile     |   4 +-
 drivers/block/zram/zcomp.c      | 143 ++++++++++++++++++++++++----------------
 drivers/block/zram/zcomp.h      |  36 +++-------
 drivers/block/zram/zcomp_lz4.c  |  56 ----------------
 drivers/block/zram/zcomp_lz4.h  |  17 -----
 drivers/block/zram/zcomp_lzo.c  |  56 ----------------
 drivers/block/zram/zcomp_lzo.h  |  17 -----
 drivers/block/zram/zram_drv.c   |  42 +++++++-----
 drivers/block/zram/zram_drv.h   |   5 +-
 11 files changed, 171 insertions(+), 302 deletions(-)
 delete mode 100644 drivers/block/zram/zcomp_lz4.c
 delete mode 100644 drivers/block/zram/zcomp_lz4.h
 delete mode 100644 drivers/block/zram/zcomp_lzo.c
 delete mode 100644 drivers/block/zram/zcomp_lzo.h

-- 
2.8.3.394.g3916adf

             reply	other threads:[~2016-05-31 12:20 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-31 12:20 Sergey Senozhatsky [this message]
2016-05-31 12:20 ` [PATCH v2 1/8] zram: rename zstrm find-release functions Sergey Senozhatsky
2016-05-31 12:20 ` [PATCH v2 2/8] zram: switch to crypto compress API Sergey Senozhatsky
2016-05-31 23:40   ` Minchan Kim
2016-05-31 23:44   ` Minchan Kim
2016-06-01  1:17     ` Sergey Senozhatsky
2016-05-31 12:20 ` [PATCH v2 3/8] zram: align zcomp interface to crypto comp API Sergey Senozhatsky
2016-05-31 23:48   ` Minchan Kim
2016-06-01  1:13     ` Sergey Senozhatsky
2016-05-31 12:20 ` [PATCH v2 4/8] zram: use crypto api to check alg availability Sergey Senozhatsky
2016-06-01  0:03   ` Minchan Kim
2016-06-01  1:07     ` Sergey Senozhatsky
2016-06-01  2:27       ` Minchan Kim
2016-06-01  3:17         ` Sergey Senozhatsky
2016-06-01  6:47           ` Minchan Kim
2016-06-01  7:48             ` Sergey Senozhatsky
2016-06-01 14:59               ` Austin S. Hemmelgarn
2016-06-02  2:40               ` Minchan Kim
2016-05-31 12:20 ` [PATCH v2 5/8] zram: cosmetic: cleanup documentation Sergey Senozhatsky
2016-06-01  0:06   ` Minchan Kim
2016-05-31 12:20 ` [PATCH v2 6/8] zram: delete custom lzo/lz4 Sergey Senozhatsky
2016-06-01  0:08   ` Minchan Kim
2016-05-31 12:20 ` [PATCH v2 7/8] zram: add more compression algorithms Sergey Senozhatsky
2016-06-01  0:24   ` Minchan Kim
2016-05-31 12:20 ` [PATCH v2 8/8] zram: drop gfp_t from zcomp_strm_alloc() Sergey Senozhatsky
2016-06-01  0:41   ` Minchan Kim
2016-05-31 12:29 ` [PATCH v2 0/8] zram: switch to crypto api Sergey Senozhatsky
2016-05-31 19:07   ` Andrew Morton
2016-06-01  0:58     ` Sergey Senozhatsky

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