Re: [PATCH] kernel: Expose SYS_kcmp by default

Hi!

Userspace has discovered the functionality offered by SYS_kcmp and has started to depend upon it. In particular, Mesa uses SYS_kcmp for os_same_file_description() in order to identify when two fd (e.g. device or dmabuf) point to the same struct file. Since they depend on it for core functionality, lift SYS_kcmp out of the non-default CONFIG_CHECKPOINT_RESTORE into the selectable syscall category.

Is it good idea to enable everything because Mesa uses it for file descriptors?

This is really interesting syscall...

Best regards, Pavel