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Merge d5660df4a5 ("Merge branch 'akpm' (patches from Andrew)") into android-mainline

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steps on the way to 5.10-rc1

Change-Id: Iddc84c25b6a9d71fa8542b927d6f69c364131c3d
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman
2020-10-23 13:08:50 +02:00
parent aedaedc749 d5660df4a5
commit 75c90a8c3a
261 changed files with 9144 additions and 4313 deletions
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25
kernel/fork.c
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@@ -561,7 +561,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm,
atomic_dec(&inode->i_writecount);
i_mmap_lock_write(mapping);
if (tmp->vm_flags & VM_SHARED)
atomic_inc(&mapping->i_mmap_writable);
mapping_allow_writable(mapping);
flush_dcache_mmap_lock(mapping);
/* insert tmp into the share list, just after mpnt */
vma_interval_tree_insert_after(tmp, mpnt,
@@ -592,7 +592,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm,
mm->map_count++;
if (!(tmp->vm_flags & VM_WIPEONFORK))
retval = copy_page_range(mm, oldmm, mpnt, tmp);
retval = copy_page_range(tmp, mpnt);
if (tmp->vm_ops && tmp->vm_ops->open)
tmp->vm_ops->open(tmp);
@@ -1814,6 +1814,25 @@ static __always_inline void delayed_free_task(struct task_struct *tsk)
free_task(tsk);
}
static void copy_oom_score_adj(u64 clone_flags, struct task_struct *tsk)
{
/* Skip if kernel thread */
if (!tsk->mm)
return;
/* Skip if spawning a thread or using vfork */
if ((clone_flags & (CLONE_VM | CLONE_THREAD | CLONE_VFORK)) != CLONE_VM)
return;
/* We need to synchronize with __set_oom_adj */
mutex_lock(&oom_adj_mutex);
set_bit(MMF_MULTIPROCESS, &tsk->mm->flags);
/* Update the values in case they were changed after copy_signal */
tsk->signal->oom_score_adj = current->signal->oom_score_adj;
tsk->signal->oom_score_adj_min = current->signal->oom_score_adj_min;
mutex_unlock(&oom_adj_mutex);
}
/*
* This creates a new process as a copy of the old one,
* but does not actually start it yet.
@@ -2292,6 +2311,8 @@ static __latent_entropy struct task_struct *copy_process(
trace_task_newtask(p, clone_flags);
uprobe_copy_process(p, clone_flags);
copy_oom_score_adj(clone_flags, p);
return p;
bad_fork_cancel_cgroup: