On Sun, Dec 02, 2018 at 09:51:34AM +0100, Richard Weinberger wrote:
Greg,
Am Donnerstag, 29. November 2018, 09:09:23 CET schrieb Greg KH:
On Mon, Nov 26, 2018 at 11:38:42AM +0100, Martin Kepplinger wrote:
From: Richard Weinberger richard@nod.at
[ Upstream commit 34653fd8c46e771585fce5975e4243f8fd401914 ]
This commit got merged along with commit 781932375ffc ("ubi: fastmap: Correctly handle interrupted erasures in EBA") upstream but only the latter has been applied to stable v4.14.54 as commit a23cf10d9abb. This resulted in a performance regression. Startup on i.MX platforms is delayed for up to a few seconds depending on the platform. This fixes ubi fastmap to be of the same performance as it has been before said fastmap changes.
Fixes: a23cf10d9abb ("ubi: fastmap: Correctly handle interrupted erasures in EBA") Signed-off-by: Richard Weinberger richard@nod.at Signed-off-by: Martin Kepplinger martin.kepplinger@ginzinger.com
Richard, although this fixes a major slowdown regression in -stable, do you consider this "stable" too?
This applies and is tested only for the 4.14 stable tree. It seems to be equally relevant for 4.9 and 4.4 though.
Now queued up for 4.14.y, thanks.
can you *please* slow a little down?
There are times (e.g. when I travel, visit customers on-site, being sick, etc...) where I don't have the resources to monitor the mailinglists in detail. Adding patches to stable on shout asks for trouble.
As Sudip points out, this patch needs a further fix patch: 25677478474a ("ubi: Initialize Fastmap checkmapping correctly")
This is now in 4.14.86 so all should be fine now.
As for "speed", most of the time people are complaining that I move too slow in getting fixes backported and to their patches. Rarely am I told I am moving too fast, that's a nice change :)
As for doing releases on a "regular" schedule, I've tried it, and it didn't work any better/worse than what I'm doing now as everyone who consumes these kernels have their own cadence / acceptance process and I can never get in sync with _everyone_ let alone almost _anyone_.
And due to travel and other things (like security issues coming up), trying to nail down a specific day-of-the-week doesn't work out at all either.
thanks,
greg k-h