iocache

io cache and write changes

[0x000018a0]> wc?                                                                     
Usage: wc[ir*?]
 wc       list all write changes
 wc*      "" in radare commands
 wcr      reset all write changes in cache
 wci      commit write cache
NOTE: Needs io.cache=true
[0x000018a0]> e io.cache=true                                                         
[0x000018a0]> wx 9090                                                                 
[0x000018a0]> wc                                                                      
addr=0x000018a0 size=2
[0x000018a0]> wc*                                                                     
wx 9090 @ 0x000018a0
[0x000018a0]> wci                                                                     
r_io_write: cannot write on fd 3
[0x000018a0]> wcr                                                                     
[0x000018a0]> wc                                                                      
[0x000018a0]>