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Fri, 01 Dec 2023 09:27:46 +0000 From: Daniel Wagner To: linux-nvme@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Keith Busch , Christoph Hellwig , Sagi Grimberg , Hannes Reinecke , Daniel Wagner Subject: [RFC v2 1/3] nvme: lookup ctrl from request instead from namespace Date: Fri, 1 Dec 2023 10:27:33 +0100 Message-ID: <20231201092735.28592-2-dwagner@suse.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231201092735.28592-1-dwagner@suse.de> References: <20231201092735.28592-1-dwagner@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Authentication-Results: smtp-out1.suse.de; none X-Spamd-Result: default: False [-3.10 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_MISSING_CHARSET(2.50)[]; MIME_GOOD(-0.10)[text/plain]; REPLY(-4.00)[]; BROKEN_CONTENT_TYPE(1.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; RCPT_COUNT_SEVEN(0.00)[7]; MID_CONTAINS_FROM(1.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; BAYES_HAM(-3.00)[100.00%] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231201_012750_868825_19AB4A84 X-CRM114-Status: GOOD ( 16.13 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org In preparation to use struct nvme_ns_head pointers instead of a struct nvme_ns pointers, get the the ctrl pointer from a request. The reason is that there is no easy and fast way to lookup the ctrl from struct nvme_ns_head. Signed-off-by: Daniel Wagner --- drivers/nvme/host/core.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index d699f0c8b13e..900c045fcae0 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -769,6 +769,7 @@ static blk_status_t nvme_setup_discard(struct nvme_ns *ns, struct request *req, struct nvme_command *cmnd) { unsigned short segments = blk_rq_nr_discard_segments(req), n = 0; + struct nvme_ctrl *ctrl = nvme_req(req)->ctrl; struct nvme_dsm_range *range; struct bio *bio; @@ -786,10 +787,10 @@ static blk_status_t nvme_setup_discard(struct nvme_ns *ns, struct request *req, * discard page. If that's also busy, it's safe to return * busy, as we know we can make progress once that's freed. */ - if (test_and_set_bit_lock(0, &ns->ctrl->discard_page_busy)) + if (test_and_set_bit_lock(0, &ctrl->discard_page_busy)) return BLK_STS_RESOURCE; - range = page_address(ns->ctrl->discard_page); + range = page_address(ctrl->discard_page); } if (queue_max_discard_segments(req->q) == 1) { @@ -815,8 +816,8 @@ static blk_status_t nvme_setup_discard(struct nvme_ns *ns, struct request *req, } if (WARN_ON_ONCE(n != segments)) { - if (virt_to_page(range) == ns->ctrl->discard_page) - clear_bit_unlock(0, &ns->ctrl->discard_page_busy); + if (virt_to_page(range) == ctrl->discard_page) + clear_bit_unlock(0, &ctrl->discard_page_busy); else kfree(range); return BLK_STS_IOERR; @@ -861,9 +862,11 @@ static void nvme_set_ref_tag(struct nvme_ns *ns, struct nvme_command *cmnd, static inline blk_status_t nvme_setup_write_zeroes(struct nvme_ns *ns, struct request *req, struct nvme_command *cmnd) { + struct nvme_ctrl *ctrl = nvme_req(req)->ctrl; + memset(cmnd, 0, sizeof(*cmnd)); - if (ns->ctrl->quirks & NVME_QUIRK_DEALLOCATE_ZEROES) + if (ctrl->quirks & NVME_QUIRK_DEALLOCATE_ZEROES) return nvme_setup_discard(ns, req, cmnd); cmnd->write_zeroes.opcode = nvme_cmd_write_zeroes; -- 2.43.0