libvmon: Revert "libvmon: assume short positive reads found EOF"

This reverts commit 9f564cf8df6ef5fcba37082ba8013d6175955125.

Experimenting with smaller initial seq_file buffers in the kernel
has exposed this actually breaks, which contradicts my
expectations for proc files established back in the /proc/mdstat
racy incremental parsing corrupting the output days.

I'm seeing /proc/$pid/task/$pid/children spit out short reads
when the seq_file size is smaller than the amount of output.
Userspace's read() call can provide a large buffer, and if
seq_file's is smaller than the children output, it'll split the
children output instead of enlarging the seq_file buf to the
read() buffers bounds.

0 files changed, 0 insertions, 0 deletions