MFC r308806
Speed up pw operations that edit /etc/group or /etc/passwd
r285050 fixed a bug in pw that could lead to /etc/passwd or /etc/group
corruption on power loss. However, it fixed it by opening those files with
O_SYNC, which is very slow, especially on ZFS. This change replaces O_SYNC
with appropriately placed fsync()s instead, which is much faster. Using a
ZFS tmpdir, the time to run pw's kyua tests drops from 245s to 35s.
git-svn-id: svn://svn.freebsd.org/base/stable/10@310173
ccf9f872-aa2e-dd11-9fc8-
001c23d0bc1f
projects / FreeBSD / stable / 10.git / commit