tree 8532935589ae9bdb08fca6ac73b27a505463bcbd
parent 1e92c48ab44f6990f399786b58061024224ba711
author Al Viro <viro@zeniv.linux.org.uk> 1707508663 -0500
committer Al Viro <viro@zeniv.linux.org.uk> 1757630061 -0400

make it easier to catch those who try to modify ->d_name

Turn d_name into an anon union of const struct qstr d_name with
struct qstr __d_name.  Very few places need to modify it (all
in fs/dcache.c); those are switched to use of ->__d_name.

Note that ->d_name can actually change under you unless you have
the right locking environment; this const just prohibits accidentally
doing stores without being easily spotted.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>