[LTP] [RFC PATCH] fallocate05: increase the fallocate and defallocate size

[Ralph Siemsen]

On Fri, Sep 24, 2021 at 04:26:01PM -0400, Ralph Siemsen wrote:

>Well, this is certainly possible, although there are no intentional 
>changes in the kernel (esp filesystems). Only drivers for flash, 
>architecture support, etc. One possible option would be to try testing 
>a generic ARM kernel under qemu, to see if we can reproduce it there.

I am able to reproduce the behaviour under qemu ARM emulation. The 
kernel in this case is 5.4.142 -- a vanilla version directly from the 
stable 5.4.y kernel series.

I repeated tests 1) and 2) in this environment, getting essentially the 
same result as on the actual hardware:

1) LTP 20210524, fallocate05 test passes.

2) Latest git 443cbc1039f, fallocate05 seems to trigger OOM while
    filling up the tmpfs. Here is the complete log:
    https://gist.github.com/rfs613/f58bd803d1119bf30eb723aef4abf1f5
    The tmpfs test begins on line 759

It's getting late so I won't try the other tests right now, but can do 
so later if desired.

Regards,
Ralph