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Mon, 20 Dec 2021 14:22:48 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20211220142248epsmtrp23a7411e80d9989d0aa94a47322086fd0~CfI8XkkyS1266312663epsmtrp28; Mon, 20 Dec 2021 14:22:48 +0000 (GMT) X-AuditID: b6c32a49-b01ff70000001917-b7-61c1427689c5 Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id 57.65.08738.8B190C16; Mon, 20 Dec 2021 23:22:48 +0900 (KST) Received: from localhost.localdomain (unknown [107.110.206.5]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20211220142246epsmtip1002c69610ffbf8c65bb9b40f9d65a84f~CfI63Hcf80040400404epsmtip1j; Mon, 20 Dec 2021 14:22:46 +0000 (GMT) From: Kanchan Joshi To: io-uring@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org Cc: axboe@kernel.dk, hch@lst.de, kbusch@kernel.org, javier@javigon.com, anuj20.g@samsung.com, joshiiitr@gmail.com, pankydev8@gmail.com Subject: [RFC 10/13] block: factor out helper for bio allocation from cache Date: Mon, 20 Dec 2021 19:47:31 +0530 Message-Id: <20211220141734.12206-11-joshi.k@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211220141734.12206-1-joshi.k@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrJJsWRmVeSWpSXmKPExsWy7bCmhm6Z08FEg4VT9SyaJvxltlh9t5/N YuXqo0wW71rPsVh0nr7AZHH+7WEmi0mHrjFa7L2lbTF/2VN2izU3n7I4cHnsnHWX3aN5wR0W j8tnSz02repk89i8pN5j980GNo++LasYPT5vkgvgiMq2yUhNTEktUkjNS85PycxLt1XyDo53 jjc1MzDUNbS0MFdSyEvMTbVVcvEJ0HXLzAG6UEmhLDGnFCgUkFhcrKRvZ1OUX1qSqpCRX1xi q5RakJJTYFKgV5yYW1yal66Xl1piZWhgYGQKVJiQnfFh/jmWgpOSFdt/PWdpYLwt0sXIySEh YCKx/u0sti5GLg4hgd2MEjsb7rJCOJ8YJfav/coO4XxmlLh3+AU7TMvK138ZQWwhgV1AiStl cEVbdu8GSnBwsAloSlyYXApSIyIQLXHh+TU2EJtZoANoRbctiC0s4C1xv+M0E0g5i4CqROcd YZAwr4ClxMV5v9ggVslLzLz0HWwtJ1D88OxlbBA1ghInZz5hgRgpL9G8dTYzyAkSAhM5JLZv f8gKMlNCwEXizI4kiDnCEq+Ob4E6X0ri87u9UPOLJX7dOQrVC3Ta9YaZLBAJe4mLe/6C3cYM 9Mr6XfoQYVmJqafWMUHs5ZPo/f2ECSLOK7FjHoytKHFv0lNWCFtc4uGMJVC2h8SB5U+g4dnD KDHnwXW2CYwKs5D8MwvJP7MQVi9gZF7FKJlaUJybnlpsWmCYl1oOj+Pk/NxNjOA0q+W5g/Hu gw96hxiZOBgPMUpwMCuJ8G6ZvT9RiDclsbIqtSg/vqg0J7X4EKMpMLwnMkuJJucDE31eSbyh iaWBiZmZmYmlsZmhkjjv6fQNiUIC6YklqdmpqQWpRTB9TBycUg1MSqwvrzyxa3p+L+Nab5Hj 2de7X7O5TtflrW+p5Nxj+fTkWfnIqSqiyguPbz1/51PHAi/Vnrv/++qS1WTuF7syLjvYkOGT fed1pYVR6Le02TvVfTss+HNMCjeHbK+/KzHzuJKneX9aQlqgjerfzXOs/748804qjOXOklnJ wXOjmwIKLhQk1xSGLPVhD+y8OG3Dh+nts9jr3oQFt62oPnTj/dt9S6dt3aaelGFYENA2+QbD NcVE9ZiSjtaVhUdv21W8ybXVf99RuqLp7qK4NXq/hKeZbc45myG/Nes7n2vBmd/nGZS0Dr98 4RK3+Ip+w2fOK2bHkq6+L4psM1qk4z+jimHy1DXzF/gkSbBxTq1TYinOSDTUYi4qTgQAuP9x FjwEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrILMWRmVeSWpSXmKPExsWy7bCSnO6OiQcSDQ4u57FomvCX2WL13X42 i5WrjzJZvGs9x2LRefoCk8X5t4eZLCYdusZosfeWtsX8ZU/ZLdbcfMriwOWxc9Zddo/mBXdY PC6fLfXYtKqTzWPzknqP3Tcb2Dz6tqxi9Pi8SS6AI4rLJiU1J7MstUjfLoEr48P8cywFJyUr tv96ztLAeFuki5GTQ0LARGLl67+MXYxcHEICOxglLm69zgyREJdovvaDHcIWllj57zk7RNFH RomDXxqBOjg42AQ0JS5MLgWpERGIlfjw6xgTSA2zwCRGiQ39D8CahQW8Je53nGYCqWcRUJXo vCMMEuYVsJS4OO8XG8R8eYmZl76DlXMCxQ/PXgYWFxKwkDjx4QsLRL2gxMmZT8BsZqD65q2z mScwCsxCkpqFJLWAkWkVo2RqQXFuem6xYYFRXmq5XnFibnFpXrpecn7uJkZwLGhp7WDcs+qD 3iFGJg7GQ4wSHMxKIrxbZu9PFOJNSaysSi3Kjy8qzUktPsQozcGiJM57oetkvJBAemJJanZq akFqEUyWiYNTqoFJY/fNU5ctNkf/W7r6qtK5yxYZqQuMRHiTP61VvTTr/NHuq6au0/a31JS7 tLQe8Y1mCHg7IyPXxJTJV9owam/LD742tV+rmE/Yfmb64yFcc3TeJDFugavnGB0dbs9Z9Xey RX7aydfSizYEbjd42ap+7OK3alZjkdQpRsocIQcXCBd+uHS02P6dCO+eL58XzWDPkLgRME28 c9Lt62ExztsVYsWSLcs+5/VFHrvRteGw4/VXb5cxfrto0PUu0WSj+H8WgZNznLPXT175oW7P th0bWNtYiuZ8j5OJ5T7458GHbzrr1mToSmbeqGU6YbOown/z9xtzl7/jClnz7dw5Me7grN2u zV+/PgnszFkZP+ntCSWW4oxEQy3mouJEAGwjypH0AgAA X-CMS-MailID: 20211220142248epcas5p1e5904e10396f8cdea54bbd8d7aeca9a6 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20211220142248epcas5p1e5904e10396f8cdea54bbd8d7aeca9a6 References: <20211220141734.12206-1-joshi.k@samsung.com> Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Factor the code to pull out bio_from_cache helper which is not tied to kiocb. This is prep patch. Signed-off-by: Kanchan Joshi --- block/bio.c | 43 ++++++++++++++++++++++++++----------------- include/linux/bio.h | 1 + 2 files changed, 27 insertions(+), 17 deletions(-) diff --git a/block/bio.c b/block/bio.c index 6fadc977cd7f..46d0f278d3aa 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1682,27 +1682,12 @@ int bioset_init_from_src(struct bio_set *bs, struct bio_set *src) } EXPORT_SYMBOL(bioset_init_from_src); -/** - * bio_alloc_kiocb - Allocate a bio from bio_set based on kiocb - * @kiocb: kiocb describing the IO - * @nr_vecs: number of iovecs to pre-allocate - * @bs: bio_set to allocate from - * - * Description: - * Like @bio_alloc_bioset, but pass in the kiocb. The kiocb is only - * used to check if we should dip into the per-cpu bio_set allocation - * cache. The allocation uses GFP_KERNEL internally. On return, the - * bio is marked BIO_PERCPU_CACHEABLE, and the final put of the bio - * MUST be done from process context, not hard/soft IRQ. - * - */ -struct bio *bio_alloc_kiocb(struct kiocb *kiocb, unsigned short nr_vecs, - struct bio_set *bs) +struct bio *bio_from_cache(unsigned short nr_vecs, struct bio_set *bs) { struct bio_alloc_cache *cache; struct bio *bio; - if (!(kiocb->ki_flags & IOCB_ALLOC_CACHE) || nr_vecs > BIO_INLINE_VECS) + if (nr_vecs > BIO_INLINE_VECS) return bio_alloc_bioset(GFP_KERNEL, nr_vecs, bs); cache = per_cpu_ptr(bs->cache, get_cpu()); @@ -1721,6 +1706,30 @@ struct bio *bio_alloc_kiocb(struct kiocb *kiocb, unsigned short nr_vecs, bio_set_flag(bio, BIO_PERCPU_CACHE); return bio; } +EXPORT_SYMBOL_GPL(bio_from_cache); + +/** + * bio_alloc_kiocb - Allocate a bio from bio_set based on kiocb + * @kiocb: kiocb describing the IO + * @nr_vecs: number of iovecs to pre-allocate + * @bs: bio_set to allocate from + * + * Description: + * Like @bio_alloc_bioset, but pass in the kiocb. The kiocb is only + * used to check if we should dip into the per-cpu bio_set allocation + * cache. The allocation uses GFP_KERNEL internally. On return, the + * bio is marked BIO_PERCPU_CACHEABLE, and the final put of the bio + * MUST be done from process context, not hard/soft IRQ. + * + */ +struct bio *bio_alloc_kiocb(struct kiocb *kiocb, unsigned short nr_vecs, + struct bio_set *bs) +{ + if (!(kiocb->ki_flags & IOCB_ALLOC_CACHE)) + return bio_alloc_bioset(GFP_KERNEL, nr_vecs, bs); + + return bio_from_cache(nr_vecs, bs); +} EXPORT_SYMBOL_GPL(bio_alloc_kiocb); static int __init init_bio(void) diff --git a/include/linux/bio.h b/include/linux/bio.h index fe6bdfbbef66..77eceb2bda4b 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -358,6 +358,7 @@ struct bio *bio_alloc_bioset(gfp_t gfp, unsigned short nr_iovecs, struct bio_set *bs); struct bio *bio_alloc_kiocb(struct kiocb *kiocb, unsigned short nr_vecs, struct bio_set *bs); +struct bio *bio_from_cache(unsigned short nr_vecs, struct bio_set *bs); struct bio *bio_kmalloc(gfp_t gfp_mask, unsigned short nr_iovecs); extern void bio_put(struct bio *); -- 2.25.1