The patch titled
Subject: mm/hmm.c: only set FAULT_FLAG_ALLOW_RETRY for non-blocking
has been removed from the -mm tree. Its filename was
mm-hmm-only-set-fault_flag_allow_retry-for-non-blocking.patch
This patch was dropped because it was merged into mainline or a subsystem tree
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From: "Kuehling, Felix" <Felix.Kuehling@xxxxxxx>
Subject: mm/hmm.c: only set FAULT_FLAG_ALLOW_RETRY for non-blocking
Don't set this flag by default in hmm_vma_do_fault. It is set
conditionally just a few lines below. Setting it unconditionally
can lead to handle_mm_fault doing a non-blocking fault, returning
-EBUSY and unlocking mmap_sem unexpectedly.
Link: http://lkml.kernel.org/r/20190510195258.9930-3-Felix.Kuehling@xxxxxxx
Signed-off-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
Reviewed-by: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Alex Deucher <alex.deucher@xxxxxxx>
Cc: Dave Airlie <airlied@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/hmm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/hmm.c~mm-hmm-only-set-fault_flag_allow_retry-for-non-blocking
+++ a/mm/hmm.c
@@ -328,7 +328,7 @@ struct hmm_vma_walk {
static int hmm_vma_do_fault(struct mm_walk *walk, unsigned long addr,
bool write_fault, uint64_t *pfn)
{
- unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_REMOTE;
+ unsigned int flags = FAULT_FLAG_REMOTE;
struct hmm_vma_walk *hmm_vma_walk = walk->private;
struct hmm_range *range = hmm_vma_walk->range;
struct vm_area_struct *vma = walk->vma;
_
Patches currently in -mm which might be from Felix.Kuehling@xxxxxxx are
