ovl: create ovl_need_index() helper
authorAmir Goldstein <amir73il@gmail.com>
Tue, 26 Sep 2017 04:55:26 +0000 (07:55 +0300)
committerMiklos Szeredi <mszeredi@redhat.com>
Wed, 24 Jan 2018 10:25:54 +0000 (11:25 +0100)
commit24b33ee104ecd5a4e1e71412f8966199d6a0bf02
tree05d5e761abe8c637a4e93e5d1700c3e863757d52
parent9ee60ce2491166c73a381e5f04dc4c3a147e169d
ovl: create ovl_need_index() helper

The helper determines which lower file needs to be indexed
on copy up and before nlink changes.

For index=on, the helper evaluates to true for lower hardlinks.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
fs/overlayfs/copy_up.c
fs/overlayfs/overlayfs.h
fs/overlayfs/util.c