Comment 24 for bug 1047261

5 years later, on ubuntu 18.10, I am seeing this same error.

```
Jan 18 11:19:47 mathieu-FMVWB3U28 kernel: [10270.829309] ecryptfs_encrypt_page: Error attempting to write lower page; rc = [-28]
Jan 18 11:19:47 mathieu-FMVWB3U28 kernel: [10270.829311] ecryptfs_write_end: Error encrypting page (upper index [0x0000000000005249])
Jan 18 11:19:47 mathieu-FMVWB3U28 kernel: [10271.004494] ecryptfs_encrypt_page: Error attempting to write lower page; rc = [-28]
Jan 18 11:19:47 mathieu-FMVWB3U28 kernel: [10271.004498] ecryptfs_write_end: Error encrypting page (upper index [0x0000000000005249])
Jan 18 11:19:47 mathieu-FMVWB3U28 kernel: [10271.004552] ecryptfs_encrypt_page: Error attempting to write lower page; rc = [-28]
Jan 18 11:19:47 mathieu-FMVWB3U28 kernel: [10271.004554] ecryptfs_write_end: Error encrypting page (upper index [0x0000000000005249])
Jan 18 11:19:47 mathieu-FMVWB3U28 kernel: [10271.004592] ecryptfs_encrypt_page: Error attempting to write lower page; rc = [-28]
```

my .Private folder is at 100%, reported by `df`, almost twice as much as what `du` says....
I am moving files away, but it does not decrease...