UBIFS: Failed to read/write file when contiguous pages are not enough

[Richard Weinberger]

Am 21.03.2017 um 13:34 schrieb yhb at ruijie.com.cn:
> Yes, I look forward to this improvement.

In general it would be nice to replace all large buffers in UBIFS
by scatter gather lists. But this is a non-trivial change.

Thanks,
//richard