question about splice

[majianpeng <majianpeng@xxxxxxxxx>]

Hi all,
	I used splice and found a prolem(at least i call).
The demo is:
A:splice(regularfileA--->pipe);
B:splice(pipe--->regularfileB)
Before do B, we modify the data of regA which now in pipe. The data to regularfileB willbe change.
If we used the buff
A:read(regA, buff);
B: write(buff, regB);
After A, the contend of regA can't effect the buff.
Review the code of splice,I know the pipe share the pagecache of regA.
Maybe this is not a problem or am i missing something?

Thanks!
Jianpeng Ma?韬{.n?????%??檩??w?{.n???{饼?z鳐??骅w*jg????????G??⒏⒎?:+v????????????＂??????