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Howlett" Cc: linux-block@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andreas Hindborg X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1933; i=a.hindborg@kernel.org; h=from:subject:message-id; bh=c72UaM9t8Nsnn6kAPdjGxkpAM0WUzhWF4XrAzC0RQao=; b=owEBbQKS/ZANAwAKAeG4Gj55KGN3AcsmYgBpklhgs4wMS8YB3muuW0aSQ3HICO4ZNqX1ZK51R 3nW17TLDTyJAjMEAAEKAB0WIQQSwflHVr98KhXWwBLhuBo+eShjdwUCaZJYYAAKCRDhuBo+eShj d8CpEACJwP4yRNF/vxN+0m7tnWXUQpbGdqaRTYay3DIJwmRNjTfNA7gS8JGyX2CboYyVhnlfOXd FjSGLFlqVkN3pQXpOwbJaiA8fEqbo0/a60mZW9b7TMJal9zLIjyn+kWTUl+Y5vEsNQt73qrqPGO 5vsfhqkiGrG3tKZy10A6l2LP+VEr2pIla3wU5Ze14AgIsFUfxCAYrFXYUMwsdmv6LEKL7zKPyU0 iM6d6XhpXXDMeJpDfX+F58ijvk4e9eNqVZBikMKGvkTDMZAi8moJYOSWmxqETcS/8mm/xW+kgla oksaa54icWULPIQPxed8y8yJdx8GWYsSLAGKDuFjZaw29DGI0ZmbVLf0/NaKc2SZE9DTtaqe9H4 tkO/gfW6QBYKo6H5LK3sxEDslJuwmm4rqiJGW5RJUdsjTBkVUPYbyR19vZbBcLCJzsao9Jng8LX TrnnOlh5wBVGRUEmbuQVjz26NFMO3uVUfrmB5+a3dT39tFxhQbi1hs/R0DeouVUFDv4N5iYKpJc CEAJyu7bNfnrGL4p2EoIjEkCw3HWLXrAA3Cs4TYuVo9N6ES3vxwhbAy+zrdjpp40k5E9Gc80PEh Rq5nV4quXuG0aeW14mY2CfORzn5CxSB4H7jMdFo930kvb5zH7nsKze2ly7FQbQTHmbiQO/lYFmy hb9ZpII2eAkHWYQ== X-Developer-Key: i=a.hindborg@kernel.org; a=openpgp; fpr=3108C10F46872E248D1FB221376EB100563EF7A7 X-Rspamd-Queue-Id: 6C077140004 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: ry3dhne33paij9k93dnzpb6ibz8a7bfc X-HE-Tag: 1771199017-706183 X-HE-Meta: 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 JJOqDuZr 9LserK9F+XNe8oDcJbphHp++JFCYfkNHKKJepqJxwmpUGHWust82bt2Py3Wu0oOTZtFy6YFflb0nLvIax+3o8UHoCVcZxD3ZTL8kzk/vy4IxhL3LAzH0hilv/PMrE0NjNtesVYwprbJox1SfpyhHpU7LF5ZtWvshuq7yBiC1vYrtoCkn7htzbL94J+EbFoGuLpRfAUqZcSZcAsjMcbVZVMRrHV4V/M0oTKGVNuzH+9tDBTQfBxzJq1BGOCTAwR+X65BpNuUgnYISTKYzo+9TlcQVJcqPzab/gfEwHF3wO3ymHBejos9bF4Jx/iuExmB+KarUtZjpVGxOx38YAOew+SHTed1jPhCyeip9Xf1KDodBYl1g= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Allow Rust device drivers to set the `virt_boundary_mask` property for block devices. Signed-off-by: Andreas Hindborg --- rust/kernel/block/mq/gen_disk.rs | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/rust/kernel/block/mq/gen_disk.rs b/rust/kernel/block/mq/gen_disk.rs index b428e3f4207f4..bf4775dbd6d25 100644 --- a/rust/kernel/block/mq/gen_disk.rs +++ b/rust/kernel/block/mq/gen_disk.rs @@ -37,6 +37,7 @@ pub struct GenDiskBuilder { write_cache: bool, forced_unit_access: bool, max_sectors: u32, + virt_boundary_mask: usize, _p: PhantomData, } @@ -57,6 +58,7 @@ fn default() -> Self { write_cache: false, forced_unit_access: false, max_sectors: 0, + virt_boundary_mask: 0, _p: PhantomData, } } @@ -167,6 +169,15 @@ pub fn max_sectors(mut self, sectors: u32) -> Self { self } + /// Set the I/O segment memory alignment mask for the block device. I/O requests to this device + /// will be split between segments wherever either the memory address of the end of the previous + /// segment or the memory address of the beginning of the current segment is not aligned to + /// virt_boundary_mask + 1 bytes. + pub fn virt_boundary_mask(mut self, mask: usize) -> Self { + self.virt_boundary_mask = mask; + self + } + /// Build a new `GenDisk` and add it to the VFS. pub fn build( self, @@ -187,6 +198,7 @@ pub fn build( lim.physical_block_size = self.physical_block_size; lim.max_hw_discard_sectors = self.max_hw_discard_sectors; lim.max_sectors = self.max_sectors; + lim.virt_boundary_mask = self.virt_boundary_mask; if self.rotational { lim.features = Feature::Rotational.into(); } -- 2.51.2