X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=fs%2Faio.c;h=0051fd94b44e7e75bde7882b2d9c074a1d1f8188;hb=3c333937ee3be114b181c4861188cfe8f6a59697;hp=b5253e77eb2f137ee5b1346f848514ad991801e1;hpb=c36c804559d3a891a2e655ba8185b4fa7eaee156;p=firefly-linux-kernel-4.4.55.git

diff --git a/fs/aio.c b/fs/aio.c
index b5253e77eb2f..0051fd94b44e 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -586,15 +586,10 @@ static void use_mm(struct mm_struct *mm)
 	struct task_struct *tsk = current;
 
 	task_lock(tsk);
-	tsk->flags |= PF_BORROWED_MM;
 	active_mm = tsk->active_mm;
 	atomic_inc(&mm->mm_count);
 	tsk->mm = mm;
 	tsk->active_mm = mm;
-	/*
-	 * Note that on UML this *requires* PF_BORROWED_MM to be set, otherwise
-	 * it won't work. Update it accordingly if you change it here
-	 */
 	switch_mm(active_mm, mm, tsk);
 	task_unlock(tsk);
 
@@ -614,7 +609,6 @@ static void unuse_mm(struct mm_struct *mm)
 	struct task_struct *tsk = current;
 
 	task_lock(tsk);
-	tsk->flags &= ~PF_BORROWED_MM;
 	tsk->mm = NULL;
 	/* active_mm is still 'mm' */
 	enter_lazy_tlb(mm, tsk);