Fix crash during AIO write.
Fix crash during AIO write.

(gdb) p/t s->slvr_flags 
$6 = 11000000010010110
(gdb) frame 4
#4  0x0000000000583d10 in slvr_fsaio_done (iocb=0x13e48f0) at /home/zhihui/projects-grapefruit/slash_nara/sliod/slvr.c:464
464                     psc_assert(s->slvr_pndgwrts > 0);
(gdb) bt
#0  0x00002aaaab321265 in raise () from /lib64/libc.so.6
#1  0x00002aaaab322d10 in abort () from /lib64/libc.so.6
#2  0x00000000004c2837 in _psclogv (pci=0x13eb4e0, level=PLL_FATAL, options=0, fmt=0x5f9bc5 "[assert] %s", ap=0x464084e0)
    at /home/zhihui/projects-grapefruit/psc_fsutil_libs/psc_util/log.c:394
#3  0x00000000004c2a9c in _psc_fatal (pci=0x13eb4e0, level=PLL_FATAL, options=0, fmt=0x5f9bc5 "[assert] %s")
    at /home/zhihui/projects-grapefruit/psc_fsutil_libs/psc_util/log.c:426
#4  0x0000000000583d10 in slvr_fsaio_done (iocb=0x13e48f0) at /home/zhihui/projects-grapefruit/slash_nara/sliod/slvr.c:464
#5  0x00000000005a5f15 in sliaiothr_main (thr=0x13eb3d0) at /home/zhihui/projects-grapefruit/slash_nara/sliod/slvr.c:1447
#6  0x00000000005bb15e in _pscthr_begin (arg=0x7fffffffe000) at /home/zhihui/projects-grapefruit/psc_fsutil_libs/psc_util/thread.c:311
#7  0x00002aaaab0dc73d in start_thread () from /lib64/libpthread.so.0
#8  0x00002aaaab3c4d1d in clone () from /lib64/libc.so.6
(gdb) 



git-svn-id: ae92b08b608af1c8cefa3e10d2325ea527204e07@17939 3eda493b-6a19-0410-b2e0-ec8ea4dd8fda

pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable