tree cad21a2634947a8b63f900ba11c0ebad56140563
parent 05acefb4872dae89e772729efb194af754c877e8
author Chengguang Xu <cgxu519@mykernel.net> 1590456957 +0800
committer Miklos Szeredi <mszeredi@redhat.com> 1591170322 +0200

ovl: drop negative dentry in upper layer

Negative dentries of upper layer are useless after construction of
overlayfs' own dentry and may keep in the memory long time even after
unmount of overlayfs instance. This patch tries to drop unnecessary
negative dentry of upper layer to effectively reclaim memory.

Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>