Messages in this thread Patch in this message | | | From | Dominik Dingel <> | Subject | [PATCH 1/2] mm: fixup_userfault returns VM_FAULT_RETRY if asked | Date | Thu, 19 Nov 2015 00:49:57 +0100 |
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When calling fixup_userfault with FAULT_FLAG_ALLOW_RETRY, fixup_userfault didn't care about VM_FAULT_RETRY and returned 0. If the VM_FAULT_RETRY flag is set we will return the complete result of handle_mm_fault.
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> --- mm/gup.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/mm/gup.c b/mm/gup.c index deafa2c..2af3b31 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -609,6 +609,8 @@ int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm, return -EFAULT; BUG(); } + if (ret & VM_FAULT_RETRY) + return ret; if (tsk) { if (ret & VM_FAULT_MAJOR) tsk->maj_flt++; -- 2.3.9
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