exec: Simplify unshare_files
authorEric W. Biederman <ebiederm@xmission.com>
Fri, 20 Nov 2020 23:14:19 +0000 (17:14 -0600)
committerEric W. Biederman <ebiederm@xmission.com>
Thu, 10 Dec 2020 18:39:32 +0000 (12:39 -0600)
commit1f702603e7125a390b5cdf5ce00539781cfcc86a
treeed62c7824115f6c452bf18f24b2f401b6206e020
parentb6043501289ebf169ae19b810a882d517377302f
exec: Simplify unshare_files

Now that exec no longer needs to return the unshared files to their
previous value there is no reason to return displaced.

Instead when unshare_fd creates a copy of the file table, call
put_files_struct before returning from unshare_files.

Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
v1: https://lkml.kernel.org/r/20200817220425.9389-2-ebiederm@xmission.com
Link: https://lkml.kernel.org/r/20201120231441.29911-2-ebiederm@xmission.com
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
fs/coredump.c
fs/exec.c
include/linux/fdtable.h
kernel/fork.c