commit f0e3cd9a3b0dd3d866ad632ebe3e7bf9279af237
author Zim <zezeozue@google.com> Fri Jan 03 00:57:43 2020 +0000
committer Zim <zezeozue@google.com> Mon Jan 06 23:38:59 2020 +0000
tree 2a6f19d3bc5faf640af930000cc1051c20ccb677
parent 24676a080fb9710771d321c93f2e953ffa11cbf1

Fix FUSE dentry caches on lookup

I55f06f2cad3462c258fcb4024d84a8fa9e63c856 attempted to prevent lookups
across /mnt/user/<userid> paths. Unfortunately, it introduced a nasty
bug where user 10 requesting /mnt/user/0 and failing would result in the
kernel purging its dentry cache for /mnt/user/0 and all it's
children. Importantly, this wil purge the Android/ entry and we will
lose the Android/ bind mount.

Bug: 135341433
Test: atest -c android.appsecurity.cts.ExternalStorageHostTest#testSecondaryUsersInaccessible

Change-Id: I4f698025e322e132be01bee04edc65a144d4a7dd