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| author | Mateusz Guzik <mguzik@redhat.com> | 2016-08-23 16:20:38 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-24 10:09:28 +0200 |
| commit | 2daa86f541b8fa873c56b3cc2c8dc32e03b864fc (patch) | |
| tree | 0d8f06c8344be97174422fd6478bd22b84aa4b07 /include | |
| parent | 78494c6237c82f0b45fab75c3b2988d00505992c (diff) | |
| download | lwn-2daa86f541b8fa873c56b3cc2c8dc32e03b864fc.tar.gz lwn-2daa86f541b8fa873c56b3cc2c8dc32e03b864fc.zip | |
mm: introduce get_task_exe_file
commit cd81a9170e69e018bbaba547c1fd85a585f5697a upstream.
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>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index ece042dfe23c..317564b11dc7 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1975,6 +1975,7 @@ 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); |