[PATCH v2] Call arch_pick_mmap_layout() only once
Currently both setup_new_exec() and flush_old_exec() issue
a call to arch_pick_mmap_layout().
As setup_new_exec() and flush_old_exec() are always called
pairwise arch_pick_mmap_layout() is called twice.
This patch removes one call from setup_new_exec() to have
it only called once.
Tested-by: Pat Erley
Signed-off-by: Richard Weinberger
---
Changes between v1 and v2:
Pat reported that v1 broke IA32 emulation on x86_64.
It turned out that we have to keep the second call to
arch_pick_mmap_layout() and are free to remove the first
one. v1 did it the other way around.
This is needed because only the latter call will see all
current->personality flags.
diff --git a/fs/exec.c b/fs/exec.c
index 7ea097f..a733599 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -843,7 +843,6 @@ static int exec_mmap(struct mm_struct *mm)
tsk->active_mm = mm;
activate_mm(active_mm, mm);
task_unlock(tsk);
- arch_pick_mmap_layout(mm);
if (old_mm) {
up_read(_mm->mmap_sem);
BUG_ON(active_mm != old_mm);
--
1.8.4.2
--
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[PATCH v2] Call arch_pick_mmap_layout() only once
Currently both setup_new_exec() and flush_old_exec() issue
a call to arch_pick_mmap_layout().
As setup_new_exec() and flush_old_exec() are always called
pairwise arch_pick_mmap_layout() is called twice.
This patch removes one call from setup_new_exec() to have
it only called once.
Tested-by: Pat Erley pat-l...@erley.org
Signed-off-by: Richard Weinberger rich...@nod.at
---
Changes between v1 and v2:
Pat reported that v1 broke IA32 emulation on x86_64.
It turned out that we have to keep the second call to
arch_pick_mmap_layout() and are free to remove the first
one. v1 did it the other way around.
This is needed because only the latter call will see all
current-personality flags.
diff --git a/fs/exec.c b/fs/exec.c
index 7ea097f..a733599 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -843,7 +843,6 @@ static int exec_mmap(struct mm_struct *mm)
tsk-active_mm = mm;
activate_mm(active_mm, mm);
task_unlock(tsk);
- arch_pick_mmap_layout(mm);
if (old_mm) {
up_read(old_mm-mmap_sem);
BUG_ON(active_mm != old_mm);
--
1.8.4.2
--
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