Eric Biggers 98261f39e9 ANDROID: fscrypt: add key removal notifier chain
Add a notifier chain so that sdcardfs can evict its dentries when an
fscrypt key is about to be removed.  This is needed for the
FS_IOC_REMOVE_ENCRYPTION_KEY ioctl to properly "lock" the encrypted
files underneath sdcardfs when an Android user is stopped.

This is meant to be a temporary patch carried as part of the sdcardfs
patchset until either we stop using sdcardfs, we get sdcardfs upstream,
or we find a way to provide what sdcardfs needs while also benefitting a
user upstream.

Bug: 120446149
Bug: 142275883
Test: see I83b451a2bc40c72fcd01d24aa5c34ad8de427534
Change-Id: Iec79775a71057d05a371d77da4a6541cb8e09cb7
Signed-off-by: Eric Biggers <ebiggers@google.com>
2019-10-23 21:19:43 +00:00
2019-10-17 05:28:13 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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