Procio
Implement reading and writing large buffers below /proc/sys
[PATCH 1/3] Preload sysctl lines even if longer than stdio buffer [PATCH 2/3] Add flexible buffered I/O based on fopencookie(3) [PATCH 3/3] Use new standard I/O for reading/writing sysctl values
compare with thread 20171223190020.hdneyrzp53zcfzgc@noether on procps@freelists.org