On 7/15/19 3:22 PM, Andrew Morton wrote:
On Sat, 22 Jun 2019 08:20:07 +0800 Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx> wrote:Changelog v2: * Fixed the inconsistent behavior by not aborting !vma_migratable() immediately by a separate patch (patch 1/2), and this is also the preparation for patch 2/2. For the details please see the commit log. Per Vlastimil. * Not abort immediately if unmovable page is met. This should handle non-LRU movable pages and temporary off-LRU pages more friendly. Per Vlastimil and Michal Hocko. Yang Shi (2): mm: mempolicy: make the behavior consistent when MPOL_MF_MOVE* and MPOL_MF_STRICT were specified mm: mempolicy: handle vma with unmovable pages mapped correctly in mbindI'm seeing no evidence of review on these two. Could we please take a look? 2/2 fixes a kernel crash so let's please also think about the -stable situation.
Thanks for following up this. It seems I have a few patches stalled due to lack of review.
BTW, this would not crash post-4.9 kernel since that BUG_ON had been removed. But, that behavior is definitely problematic as the commit log elaborated.
I have a note here that Vlastimil had an issue with [1/2] but I seem to hae misplaced that email :(
