view tests/test-dirstate-race.t @ 31632:814733e4c02a

statfs: detect more filesystems on Linux

Previously, the code only has what manpager says. In <linux/magic.h>, there
are more defined. This patch adds filesystems that appear in the current
Arch Linux's /proc/filesystems (autofs, overlay, securityfs) and f2fs, which
was seen in news.

  $ hg init
  $ echo a > a
  $ hg add a
  $ hg commit -m test

Do we ever miss a sub-second change?:

  $ for i in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do
  >     hg co -qC 0
  >     echo b > a
  >     hg st
  > done
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a
  M a