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authorMateusz Guzik <mguzik@redhat.com>2016-08-23 16:20:38 +0200
committerPaul Moore <paul@paul-moore.com>2016-08-31 16:11:20 -0400
commitcd81a9170e69e018bbaba547c1fd85a585f5697a (patch)
treeb0c11dc4cc55aba04e21f8c7352b8c516124cbdb /include
parent43761473c254b45883a64441dd0bc85a42f3645c (diff)
mm: introduce get_task_exe_file
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 8f468e0d2534..004c73a988b7 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1987,6 +1987,7 @@ extern void mm_drop_all_locks(struct mm_struct *mm);
extern void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file);
extern struct file *get_mm_exe_file(struct mm_struct *mm);
+extern struct file *get_task_exe_file(struct task_struct *task);
extern bool may_expand_vm(struct mm_struct *, vm_flags_t, unsigned long npages);
extern void vm_stat_account(struct mm_struct *, vm_flags_t, long npages);