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Darksonn opened this issue Sep 27, 2024 · 2 comments
Closed

Make Error use NonZero for its value #1120

Darksonn opened this issue Sep 27, 2024 · 2 comments
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• lib Related to the `rust/` library.

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@Darksonn
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Currently, the type Result<(), Error> takes up twice the size that it needs to. By changing the type inside Error to be the appropriate NonZero* type will make the niche optimization apply to reduce the size.

Related to #195.
@ojeda ojeda added the • lib Related to the `rust/` library. label Sep 27, 2024
@felipeagger
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I will work on it.

intel-lab-lkp pushed a commit to intel-lab-lkp/linux that referenced this issue Oct 3, 2024
@felipeagger @intel-lab-lkp
rust: optimize error type to use nonzero
53c5080 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
intel-lab-lkp pushed a commit to intel-lab-lkp/linux that referenced this issue Oct 3, 2024
@felipeagger @intel-lab-lkp
rust: optimize error type to use nonzero
0f645eb 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
intel-lab-lkp pushed a commit to intel-lab-lkp/linux that referenced this issue Oct 5, 2024
@felipeagger @intel-lab-lkp
rust: optimize error type to use nonzero
f2d8876 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
ojeda pushed a commit that referenced this issue Oct 7, 2024
@felipeagger @ojeda
rust: optimize error type to use nonzero
971a745 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: #1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
ojeda pushed a commit that referenced this issue Oct 7, 2024
@felipeagger @ojeda
rust: optimize error type to use nonzero
278e92e 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: #1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
ojeda pushed a commit that referenced this issue Oct 7, 2024
@felipeagger @ojeda
rust: error: optimize error type to use nonzero
c9b5ce6 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: #1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
ojeda pushed a commit that referenced this issue Oct 9, 2024
@felipeagger @ojeda
rust: error: optimize error type to use nonzero
e9759c5 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: #1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
@ojeda
Copy link
Member

ojeda commented Oct 16, 2024

https://lore.kernel.org/rust-for-linux/CANiq72kMg=HKkuTTUhGDmCamgJ1c1JSM8HZyUKwA9yi_6nF3iQ@mail.gmail.com/

alistair23 pushed a commit to alistair23/linux that referenced this issue Nov 11, 2024
@felipeagger @alistair23
rust: error: optimize error type to use nonzero
b18ea95 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alistair23 pushed a commit to alistair23/linux that referenced this issue Nov 12, 2024
@felipeagger @alistair23
rust: error: optimize error type to use nonzero
b31cf82 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Nov 21, 2024
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
937f5d1 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Nov 22, 2024
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
80c9b29 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
WhatAmISupposedToPutHere pushed a commit to WhatAmISupposedToPutHere/linux that referenced this issue Nov 23, 2024
@felipeagger @jannau
rust: error: optimize error type to use nonzero
1d74434 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Nov 23, 2024
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
71f6788 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Dec 5, 2024
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
c800856 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Dec 6, 2024
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
9a1978f 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
jannau pushed a commit to AsahiLinux/linux that referenced this issue Dec 7, 2024
@felipeagger @jannau
rust: error: optimize error type to use nonzero
428d3c1 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Dec 21, 2024
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
c790c64 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
chadmed pushed a commit to chadmed/linux that referenced this issue Jan 5, 2025
@felipeagger @jannau
rust: error: optimize error type to use nonzero
27e29a9 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Jan 5, 2025
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
15cb957 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Jan 16, 2025
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
c3da1c1 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Jan 18, 2025
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
0620165 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Jan 29, 2025
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
2fe65fc 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Jan 29, 2025
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
7c4510e 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Feb 3, 2025
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
31f6192 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
05b0ef7 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
fc972ee 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
8d83a51 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
6c2300d 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
11e19e6 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
c434f5b 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
1e2444b 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
31412ed 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
f634c74 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
5147589 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
3d8c525 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
53bf098 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
3469182 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
8d2da04 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
31e5cd0 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
5f82e11 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
alyssarosenzweig pushed a commit to alyssarosenzweig/linux that referenced this issue Feb 17, 2025
@felipeagger @alyssarosenzweig
rust: error: optimize error type to use nonzero
5c4fd35 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Feb 17, 2025
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
b0224a9 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
herrnst pushed a commit to herrnst/linux-asahi that referenced this issue Feb 17, 2025
@felipeagger @herrnst
rust: error: optimize error type to use nonzero
07d69dd 
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
ojeda pushed a commit to ojeda/linux that referenced this issue Mar 7, 2025
@felipeagger @ojeda
rust: error: optimize error type to use nonzero
6986ebf 
commit e9759c5 upstream.

Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
ojeda pushed a commit to ojeda/linux that referenced this issue Mar 7, 2025
@felipeagger @ojeda
rust: error: optimize error type to use nonzero
ff2d4c4 
commit e9759c5 upstream.

Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
github-actions bot pushed a commit to anon503/linux that referenced this issue Mar 10, 2025
@felipeagger @gregkh
rust: error: optimize error type to use nonzero
18d7c2f 
commit e9759c5 upstream.

Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
github-actions bot pushed a commit to anon503/linux that referenced this issue Mar 10, 2025
@felipeagger @gregkh
rust: error: optimize error type to use nonzero
ad457d4 
commit e9759c5 upstream.

Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
github-actions bot pushed a commit to anon503/linux that referenced this issue Mar 10, 2025
@felipeagger @gregkh
rust: error: optimize error type to use nonzero
677d2ef 
commit e9759c5 upstream.

Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
gregkh pushed a commit to gregkh/linux that referenced this issue Mar 13, 2025
@felipeagger @gregkh
rust: error: optimize error type to use nonzero
311d5ec 
commit e9759c5 upstream.

Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
oraclelinuxkernel pushed a commit to oracle/linux-uek that referenced this issue Apr 14, 2025
@felipeagger @jfvogel
rust: error: optimize error type to use nonzero
b8470e5 
commit e9759c5 upstream.

Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.

This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.

Link: Rust-for-Linux/linux#1120
Signed-off-by: Filipe Xavier <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
  message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
(cherry picked from commit 311d5ecf16c69e691205e0e441e64e8bf1bf2840)
Signed-off-by: Jack Vogel <[email protected]>
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