Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes: > On Sat, Jan 5, 2019 at 3:16 PM Linus Torvalds > <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: >> >> It goes back to forever, it looks like. I can't find a reason. > > mincore() was originally added in 2.3.52pre3, it looks like. Around > 2000 or so. But sadly before the BK history. Yeah, it's here in the commit titled "Import 2.3.52pre3" (takes a second or two to load): https://github.com/mpe/linux-fullhistory/commit/a1bcda3256956318c95c8da8bee09f79190bb034#diff-fd2d793b8b4760b4887c8c7bbb3451d7R1730 But no further detail. (Instructions for using that tree https://github.com/mpe/linux-fullhistory/wiki) cheers