| commit | d094d6860b6678057f70dee27121ea4860c55e06 | [log] [tgz] |
|---|---|---|
| author | NeilBrown <neilb@suse.com> | Thu Jun 02 16:19:52 2016 +1000 |
| committer | Shaohua Li <shli@fb.com> | Mon Jun 13 11:54:15 2016 -0700 |
| tree | f15d56552c46374fea09de2818e49aec0437626f | |
| parent | f90145f317efad72e6552cecb09ab7a4e5d1e404 [diff] |
md/raid10: add rcu protection to rdev access during reshape. mirrors[].rdev can become NULL at any point unless: - a counted reference is held - ->reconfig_mutex is held, or - rcu_read_lock() is held Reshape isn't always suitably careful as in the past rdev couldn't be removed during reshape. It can now, so add protection. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>