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Wed, 3 Feb 2021 18:38:35 +0900 (KST) Received: from localhost.localdomain (unknown [10.253.99.105]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20210203093835epsmtip203e0316ecaa2edc1409ef6193337ae94~gM1cGcN7J1238212382epsmtip2S; Wed, 3 Feb 2021 09:38:35 +0000 (GMT) From: Changheun Lee To: gregkh@linuxfoundation.org Cc: Johannes.Thumshirn@wdc.com, asml.silence@gmail.com, axboe@kernel.dk, damien.lemoal@wdc.com, hch@infradead.org, jisoo2146.oh@samsung.com, junho89.kim@samsung.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, ming.lei@redhat.com, mj0123.lee@samsung.com, nanich.lee@samsung.com, osandov@fb.com, patchwork-bot@kernel.org, seunghwan.hyun@samsung.com, sookwan7.kim@samsung.com, tj@kernel.org, tom.leiming@gmail.com, woosung2.lee@samsung.com, yt0928.kim@samsung.com Subject: [PATCH v4 2/2] bio: add limit_bio_size sysfs Date: Wed, 3 Feb 2021 18:22:47 +0900 Message-Id: <20210203092247.29258-1-nanich.lee@samsung.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA02Te0xTVxzHc3rbe8ujeCkgx8YAu5t/iFBbauEMZDFiXJcZQ9z+WNyWcgNX IPS1XspkMRMGIq8pYKa8qsg6WAoLW3kMGCBBibyzyYApQ0AwyAwPYaiIj7W9kPHf9/zy+Z7v +f3OOUJMPIdLhIm6ZMaoozUU7spvurlXGrxbL4mRrbxyQ+XWJoBqJi7i6Nz5pzyU8X0djvoL Knkof/YbAXqVe5+H1qZZ1H5vHxpuLcdR16UMHrpSX46h0ckBAt28P8JH05ZCDA31rgjQ1ZlD 6EV1N0BLz8cI1Nd8CUN17ev4IR9VYcYioWopnSBU9T8GqoYHTSqbNQdX3TDXEqqljhFcdaHB ClSrNj/V+c48XrTrSc3BBIaOY4wBjC5WH5eoi4+kPvxIHaVWhsrkwfJ3URgVoKO1TCR15Fh0 8NFEjb1BKiCF1pjspWiaZan97x006k3JTECCnk2OpBhDnMYglxmkLK1lTbp4aaxeGy6XyUKU djJGk2AZmiYM026ne66189NAsWsucBFC8gD8Y7mMnwtchWKyGcArN6YIbrECYGdJN89BiclV AG//q9lypNcPYxzUCuDjJ+WbdjtkKzRjDgong+CFhXu4Q3uTfnB2/KXTgZGPMHg5+28n5EUq 4a3+B06IT+6Bk+U99rpQKCIj4NqjVC7NHz78ttqJu5B74UZ2nsChRaQn7C2Z5Ts0ZmcyGsuc +0NyWQif3+kRcOYjsMYyxuO0F/zndgPBaQmcv5hFcIY8ADOyrgFuUQCgZa5q06GAK6urwHEi zB5d17qfK78FWzbMgEv2gItr+QIHAkkRzM4Sc8g7cCBzEtvKmvuphcchKtj4enOiZ6C5opYo AAGl29op3dZO6f+5FQCzgp2MgdXGM6zcELL9hm3A+eIDQ5tB0cKytAvwhKALQCFGeYv6inbG iEVxdOpXjFGvNpo0DNsFlPZZF2ISn1i9/cvoktVyZYhCoUAHQsNClQrKV0TLptRiMp5OZpIY xsAYt3w8oYskjZczaAqfXP3i6YuYpr9Sg4Oidi2dOBz02iPL5Ft5OnNmULvw+WjHb4nXR5NO ZR73E6GCH+Z2DY1HsUbt2fSzJyb+3ONDpK0V/67hb2BjFVRi6UyJ55fqoRSbQiltMyepW5Oi LVe91ht7dx8dO4m+9qt/m4rN0hK2u5N3r88Pvlmcoo+z7hPdlhqTxTqV8GyE8D7z3SkgPdfR HX/MPWK80irx35H/5n3dZ1UNcwPRd1C/qFOLX37CBgZaeR88Jm/9mv7zLzm+aaLwiE93PHMf 8fT3eLhcpPZJmflYEJL2iZzcV1HT1rw+ffil4kGx1dhcTcwb8NoqY1lYm7m9z801Fq+j+GwC LQ/EjCz9H98aPyl6BAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrAIsWRmVeSWpSXmKPExsWy7bCSvK50vlSCwfI2VYs5q7YxWqy+289m 0dr+jcmiefF6NovTExYxWfQ8aWK1+Nt1j8ni68Nii723tC0u75rDZnFocjOTxfTNc5gtrt0/ w25x+N5VFouHSyYyW5w7+YnVYt5jB4tfy48yWrz/cZ3d4tSOycwW6/f+ZHMQ9ZjY/I7dY+es u+wem1doeVw+W+qxaVUnm8f+uWvYPd7vu8rm0bdlFaPH501yHu0HupkCuKK4bFJSczLLUov0 7RK4Mpace8he8JC74sT8vSwNjDO4uhg5OSQETCQaN19m7mLk4hAS2MEoMWP+NGaIhJTE8RNv WbsYOYBsYYnDh4shaj4ySvzq/cEKUsMmoCPR9/YWG4gtIiAn8eT2H7BBzAJNLBLXz69mBEkI C5hKHDn9CKyIRUBV4v6cE8wgQ3kFrCW+vqiE2CUv8bR3OdheTgFNid8d3WDzhQQ0JH6d6gVr 5RUQlDg58wkLiM0MVN+8dTbzBEaBWUhSs5CkFjAyrWKUTC0ozk3PLTYsMMpLLdcrTswtLs1L 10vOz93ECI5ELa0djHtWfdA7xMjEwXiIUYKDWUmE99QksQQh3pTEyqrUovz4otKc1OJDjNIc LErivBe6TsYLCaQnlqRmp6YWpBbBZJk4OKUamFapPeLbqVy3uyXc42U4c42X2c9O5S1KCncu r49pWzORiyP/QdZ04cC28s15DRU5E2u49c50uSv9WN3Ln/W5+QTfEyfOmgp5tTO6326VzPsy 2aV6vj9P18aSyEV3DabXWfVyzZk77eCjq/tVr0p5XLSTvtqpW8Iqc6v855aOFSvSjp5UPtW0 8u/qbRI7rjm9Y/DUrj6mnWwS8PB0aFDc9GlfctewX5vicbLq/sy1UlFOZ/0rs1eUa/8tXzrh 4yfv5auObyr9O89M5dra8sYpgSEqTrF/N3xL7fqesVMkalGWc8aHjY4p2df/3M2UV9X6bNzF eG9Huoj71qWVc/5383zPVuGQ79fycbjNe9l/qxJLcUaioRZzUXEiACQ6ogMzAwAA X-CMS-MailID: 20210203093835epcas1p2e86a35ba3012882950abc7013cae59b9 X-Msg-Generator: CA X-Sendblock-Type: SVC_REQ_APPROVE CMS-TYPE: 101P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20210203093835epcas1p2e86a35ba3012882950abc7013cae59b9 References: Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Add limit_bio_size block sysfs node to limit bio size. Queue flag QUEUE_FLAG_LIMIT_BIO_SIZE will be set if limit_bio_size is set. And bio max size will be limited by queue max sectors via QUEUE_FLAG_LIMIT_BIO_SIZE set. Signed-off-by: Changheun Lee --- block/blk-sysfs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index b513f1683af0..840d97f427e6 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -288,6 +288,7 @@ QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1); QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0); QUEUE_SYSFS_BIT_FNS(iostats, IO_STAT, 0); QUEUE_SYSFS_BIT_FNS(stable_writes, STABLE_WRITES, 0); +QUEUE_SYSFS_BIT_FNS(limit_bio_size, LIMIT_BIO_SIZE, 0); #undef QUEUE_SYSFS_BIT_FNS static ssize_t queue_zoned_show(struct request_queue *q, char *page) @@ -615,6 +616,7 @@ QUEUE_RW_ENTRY(queue_nonrot, "rotational"); QUEUE_RW_ENTRY(queue_iostats, "iostats"); QUEUE_RW_ENTRY(queue_random, "add_random"); QUEUE_RW_ENTRY(queue_stable_writes, "stable_writes"); +QUEUE_RW_ENTRY(queue_limit_bio_size, "limit_bio_size"); static struct attribute *queue_attrs[] = { &queue_requests_entry.attr, @@ -648,6 +650,7 @@ static struct attribute *queue_attrs[] = { &queue_rq_affinity_entry.attr, &queue_iostats_entry.attr, &queue_stable_writes_entry.attr, + &queue_limit_bio_size_entry.attr, &queue_random_entry.attr, &queue_poll_entry.attr, &queue_wc_entry.attr,