Messages in this thread | | | Subject | Re: [PATCH 4.19 114/149] UAS: Revert commit 3ae62a42090f ("UAS: fix alignment of scatter/gather segments") | From | Oliver Neukum <> | Date | Tue, 05 Nov 2019 16:41:07 +0100 |
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Am Dienstag, den 05.11.2019, 10:09 -0500 schrieb Alan Stern: > On Tue, 5 Nov 2019, Oliver Neukum wrote: > > > Am Montag, den 04.11.2019, 22:45 +0100 schrieb Greg Kroah-Hartman: > > > Since commit ea44d190764b ("usbip: Implement SG support to > > > vhci-hcd and stub driver") was merged, the USB/IP driver can > > > also handle SG. > > > > Hi, > > > > same story as 4.4.x > > I'm not sure about uas, but it was reported just yesterday that the > corresponding commit for usb-storage caused a 30% speed degradation: > > https://marc.info/?l=linux-usb&m=157293660212040&w=2 > > Given this information, perhaps you will decide that the revert is > worthwhile.
Damned if I do, damned if I do not. Check for usbip and special case it?
Regards Oliver
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