Laura Abbott c6517b7815 doc: ioctl: Add some clarifications to botching-up-ioctls ...

- The guide currently says to pad the structure to a multiple of
  64-bits. This is not necessary in cases where the structure contains
  no 64-bit types. Clarify this concept to avoid unnecessary padding.
- When using __u64 to hold user pointers, blindly trying to do a cast to
  a void __user * may generate a warning on 32-bit systems about a cast
  from an integer to a pointer of different size. There is a macro to
  deal with this which hides an ugly double cast. Add a reference to
  this macro.

Signed-off-by: Laura Abbott <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>

2016-09-06 06:00:22 -06:00

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00-INDEX

Documentation: add How to avoid botching up ioctls

2014-08-09 09:13:40 -07:00

botching-up-ioctls.txt

doc: ioctl: Add some clarifications to botching-up-ioctls

2016-09-06 06:00:22 -06:00

cdrom.txt

cdrom: support read sub-channel command in LBA format

2016-07-12 08:24:50 -07:00

hdio.txt

…

ioctl-decoding.txt

…

ioctl-number.txt

nilfs2: move ioctl interface and disk layout to uapi separately

2016-08-02 19:35:21 -04:00