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[98.150.136.16]) by smtp.gmail.com with ESMTPSA id v76sm29272072pfj.145.2018.12.02.15.28.33 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 02 Dec 2018 15:28:34 -0800 (PST) Date: Sun, 2 Dec 2018 13:28:32 -1000 From: Joey Pabalinas To: Minchan Kim Cc: Andrew Morton , LKML , Sergey Senozhatsky , Joey Pabalinas Subject: Re: [PATCH v3 0/7] zram idle page writeback Message-ID: <20181202232832.hou645rlbvo7z5ar@gmail.com> Mail-Followup-To: Joey Pabalinas , Minchan Kim , Andrew Morton , LKML , Sergey Senozhatsky References: <20181127055429.251614-1-minchan@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="6shwijuvv6x6jsdl" Content-Disposition: inline In-Reply-To: <20181127055429.251614-1-minchan@kernel.org> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --6shwijuvv6x6jsdl Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Nov 27, 2018 at 02:54:22PM +0900, Minchan Kim wrote: > Inherently, swap device has many idle pages which are rare touched since > it was allocated. It is never problem if we use storage device as swap. > However, it's just waste for zram-swap. >=20 > This patchset supports zram idle page writeback feature. Revisions look good to me. Will also try to give it some testing this week. Reviewed-by: Joey Pabalinas > * Admin can define what is idle page "no access since X time ago" > * Admin can define when zram should writeback them > * Admin can define when zram should stop writeback to prevent wearout >=20 > Detail is on each patch's description. >=20 > Below first two patches are -stable material so it could go first > separately with others in this series. >=20 > zram: fix lockdep warning of free block handling > zram: fix double free backing device >=20 > * from v2 > - use strscpy instead of strlcpy - Joey Pabalinas > - remove irqlock for bitmap op - akpm > - don't use page as stat unit - akpm >=20 > * from v1 > - add fix dobule free backing device - minchan > - change writeback/idle interface - minchan=20 > - remove direct incompressible page writeback - sergey >=20 > Minchan Kim (7): > zram: fix lockdep warning of free block handling > zram: fix double free backing device > zram: refactoring flags and writeback stuff > zram: introduce ZRAM_IDLE flag > zram: support idle/huge page writeback > zram: add bd_stat statistics > zram: writeback throttle >=20 > Documentation/ABI/testing/sysfs-block-zram | 32 ++ > Documentation/blockdev/zram.txt | 51 ++- > drivers/block/zram/Kconfig | 5 +- > drivers/block/zram/zram_drv.c | 501 +++++++++++++++------ > drivers/block/zram/zram_drv.h | 19 +- > 5 files changed, 446 insertions(+), 162 deletions(-) >=20 > --=20 > 2.20.0.rc0.387.gc7a69e6b6c-goog >=20 --=20 Cheers, Joey Pabalinas --6shwijuvv6x6jsdl Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEENpTlWU2hUK/KMvHp2rGdfm9DtVIFAlwEap8ACgkQ2rGdfm9D tVLl1xAAr3tJ07J2CYMtIxO+HjgIOOKKxRD7L7RS0eTFhuOR3kq5vIYTyWUQMuLP r18sOjS2BTQw4PnWutxcgWay9h/MO+Htm8+O06muiybgEwTHo1w+yRJyZGjc4tD1 QRDN9R9xHRu1djq0jlBYhVR7ARUt80n8Mp4JVzpPRqehofCXAnjNoE9TmxQphdN1 10TZYgtjOtt/aQHl8yGMwuby2Vwfo8XSzGXNd/khmI76tZn82TVheAioyzDXT6i0 +pB1Hglktvdsg+AGfA9IUEnbnyihlpbjaIlDVyWoe0mcar/BjBdlvD+6G0PzShzs u32ZjrC4qe6I2FL+nENoXsb3efjVF7QBOIaysVMOUFas+4h1a8oKj0qp5xSS5R6U mNQ5DiBYCSdaXPctN+E00NGoSoBCLZlWAh9g15xtxdA5PTz0282SlRQ8w8UKhXUe OhU/lryDluYV+Fz8OlWFsRWHE3/Rmb20KVNNkld4E98tPzqoTeRqa670nJFEj7Xg nhtUL35nZ9aiEAZpHqQE87UZAjWB+8uuYYSaiDAz7RFbWknOoudvI2B2OAEo2/u4 /l5PL4LHm5m/dTLgJIsHJIijTAVRqc2lv0ZOL6UQjO4PHu/O0kPYLAn3GDqveUkS ld5f361vqLY3oVGeX2h90vfrJH+5ke/G7F+MDk9mA6+CoLQhp6g= =mDBH -----END PGP SIGNATURE----- --6shwijuvv6x6jsdl--