This reverts commit b03755ad6f33b7b8cd7312a3596a2dbf496de6e7. This is sad, and done for all the wrong reasons. Because that commit is good, and does exactly what it says: avoids a lot of small disk requests for the inode table read-ahead. However, it turns out that it causes an entirely unrelated problem: the getrandom() system call was introduced back in 2014 by commit c6e9d6f38894 ("random: intr