[PATCH] rust: block: Fix GenDiskBuilder block size documentation

[Sophon Z via B4 Relay]

From: Sophon Z <aiqubits@xxxxxxxxxxx>

GenDiskBuilder::validate_block_size() accepts powers of two from 512
through PAGE_SIZE, but the documentation for logical_block_size() and
physical_block_size() states that the maximum is 4096.

Use PAGE_SIZE for both documented upper bounds so that the documentation
matches validation on architectures with larger page sizes.

Signed-off-by: Sophon Z <aiqubits@xxxxxxxxxxx>
---
 rust/kernel/block/mq/gen_disk.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rust/kernel/block/mq/gen_disk.rs b/rust/kernel/block/mq/gen_disk.rs
index fc97dd873974..119ee522d854 100644
--- a/rust/kernel/block/mq/gen_disk.rs
+++ b/rust/kernel/block/mq/gen_disk.rs
@@ -63,7 +63,7 @@ pub fn validate_block_size(size: u32) -> Result {
     /// Set the logical block size of the device to be built.
     ///
     /// This method will check that block size is a power of two and between 512
-    /// and 4096. If not, an error is returned and the block size is not set.
+    /// and `PAGE_SIZE`. If not, an error is returned and the block size is not set.
     ///
     /// This is the smallest unit the storage device can address. It is
     /// typically 4096 bytes.
@@ -76,7 +76,7 @@ pub fn logical_block_size(mut self, block_size: u32) -> Result<Self> {
     /// Set the physical block size of the device to be built.
     ///
     /// This method will check that block size is a power of two and between 512
-    /// and 4096. If not, an error is returned and the block size is not set.
+    /// and `PAGE_SIZE`. If not, an error is returned and the block size is not set.
     ///
     /// This is the smallest unit a physical storage device can write
     /// atomically. It is usually the same as the logical block size but may be

---
base-commit: cee9395acd8043be0644b25c34bfa86623f2b935
change-id: 20260831-fix-gendisk-block-size-docs-c3e22ac70565

Best regards,
--  
Sophon Z <aiqubits@xxxxxxxxxxx>