mm: introduce get_task_exe_file

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For more convenient access if one has a pointer to the task.

As a minor nit take advantage of the fact that only task lock + rcu are
needed to safely grab ->exe_file. This saves mm refcount dance.

Use the helper in proc_exe_link.

Signed-off-by: Mateusz Guzik <mguzik@redhat.com>
Acked-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Cc: <stable@vger.kernel.org> # 4.3.x
Signed-off-by: Paul Moore <paul@paul-moore.com>

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Mateusz Guzik 2016-08-23 16:20:38 +02:00 • committed by Paul Moore

parent 43761473c2

commit cd81a9170e

3 changed files with 25 additions and 6 deletions

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include/linux/mm.h

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