This weekend was the last-minute pull request by Google’s Kees Cook to introduce the new sizeof_member() macro that had been previously rejected from Linux 5.4. Well, it was again rejected by Linus Torvalds prior to tagging the Linux 5.5-rc1 kernel.
The sizeof_member() macro has been aimed to unify 2~3 other macros within the kernel tree currently and using the size-of-field moniker, but Cook argued that for measuring the size of a member of a C struct, the new macro is more appropriate and converted usage of the old macros to this new single macro.
[Source: Phoronix]
