[Yaffs] yaffs2 hang with onenad urgent requirment

Hi

We are using yaffs2 for onenand Samsung and we are finding all fsstress
process goes to un-interruptable state.we checked grosslock count
state by adding following line in dump_proc function of yaffs2
buf += sprintf(buf, "lock status......... %d\n", dev->grossLock.count);

lock count value is -1 when it hangs.

hang board memory usage

198 root       1000 S   /bin/bash /fsstress_script.sh
  201 root        456 S   /fsstress -p 3 -n 10000 -d /tmp -l 0
  390 root        148 S   sleep 3600
*  411 root        460 D   /fsstress -p 3 -n 10000 -d /tmp -l 0
  412 root        412 D   /fsstress -p 3 -n 10000 -d /tmp -l 0
  413 root        372 D   /fsstress -p 3 -n 10000 -d /tmp -l 0
*  414 root        280 R   ps
# free
             total             used            free       shared
buffers
 Mem:        62264        60412         *1852 *           0         8192
Swap:            0            0               0
Total:        62264        60412         1852

commonly seen in all boards by using wchan

1. Yaffs_clear_inode
2. Yaffs_commit_write
3. Yaffs_lookup

Any member can support me , i will thankful to you.
thanks in advance

we have tested it on many board 90%l are hanging.