On Thu, Mar 04, 2021 at 05:30:00PM +0100, Anthony Iliopoulos wrote: > On Thu, Mar 04, 2021 at 04:16:26PM +0100, Greg Kroah-Hartman wrote: > > On Thu, Mar 04, 2021 at 04:08:24PM +0100, Anthony Iliopoulos wrote: > > > commit caf6912f3f4af7232340d500a4a2008f81b93f14 upstream. > > > > No, this does not look like that commit. > > > > Why can I not just take caf6912f3f4a ("swap: fix swapfile read/write > > offset") directly for 5.10 and 5.11? WHat has changed to prevent that? > > You're right of course, the upstream fix applies even on v5.4 so you > could just take it directly for those branches if this is preferable. But, that commit says it fixes 48d15436fde6 ("mm: remove get_swap_bio"), which is NOT what you are saying here in these patches. So which is it? Is there a problem in 5.11 and older kernels (48d15436fde6 ("mm: remove get_swap_bio") showed up in 5.12-rc1), that requires this fix, or is there nothing needed to be backported? As a note, I've been running swapfiles on 5.11 and earlier just fine for a very long time now, so is this really an issue? confused, greg k-h