Messages in this thread | | | Subject | Re: [PATCH v2] mm/mremap: Don't account pages in vma_to_resize() | From | Dmitry Safonov <> | Date | Wed, 21 Jul 2021 21:08:58 +0100 |
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On 7/21/21 9:05 PM, Andrew Morton wrote: > On Wed, 21 Jul 2021 14:21:54 +0100 Dmitry Safonov <0x7f454c46@gmail.com> wrote: > >>> Let's not do this. >>> Account memory in mremap() fast-path for growing VMAs or in move_vma() >>> for actually moving things. The same simpler way as it's done by >>> vm_stat_account(), but with a difference to call >>> security_vm_enough_memory_mm() before copying/adjusting VMA. >>> >>> Originally noticed by Chen Wandun: >>> https://lkml.kernel.org/r/20210717101942.120607-1-chenwandun@huawei.com >> >> The patch by Chen Wandun still makes sense with this v2. >> Heh :-) > > Should > https://lkml.kernel.org/r/20210717101942.120607-1-chenwandun@huawei.com > still be applied then? Did you ack it? >
Yes, please keep that patch with Acked-by: Dmitry Safonov <dima@arista.com>
This one comes on the top to correct accounting for MREMAP_DONTUNMAP.
Thanks, Dmitry
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