[Tests] fallocate system call is failing on /tmp filesystem.

[vamsikrishna935]

Testcase : fallocate01

Logs:

Thread 6 "ENCLAVE" hit Breakpoint 2, runtest (mode=mode@entry=0, fd=4, expected_size=53248) at fallocate01.c:232
232     in fallocate01.c
(gdb) bt
#0  runtest (mode=mode@entry=0, fd=4, expected_size=53248) at fallocate01.c:232
#1  0x00007fe03da5f5d1 in main (ac=<optimized out>, av=<optimized out>) at fallocate01.c:206
#2  0x00007fe00052e56c in libc_start_main_stage2 (main=0x7fe03da5f590 <main>, argc=1, argv=0x7fe040afef80)
    at src/env/__libc_start_main.c:168
#3  0x00007fe00052e4c6 in __libc_start_main (main=0x7fe03da5f590 <main>, argc=1, argv=0x7fe040afef80)
    at src/env/__libc_start_main.c:153
#4  0x00007fe03da5f643 in _start_c (p=<optimized out>) at crt/crt1.c:17
#5  0x00007fe03da5f61b in _start ()
#6  0x00007fe040afefa0 in ?? ()
#7  0x0000000000000001 in ?? ()
#8  0x00007fe000b007a0 in ?? ()
#9  0x0000000000000000 in ?? ()
(gdb) n
fallocate01    1  TCONF  :  fallocate01.c:233: fallocate system call is not implemented
fallocate01    2  TCONF  :  fallocate01.c:233: Remaining cases not appropriate for configuration

[SeanTAllen]

I believe this error is that fallocate doesn't work on the given filesystem, but it should work on tmpfs as of Linux 3.5.

I wonder if LKL is lacking such support for tmpfs.