size of files in procfs

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Hi,

I'd like to pass some data from kernel to user space. So, I create an
entry in procfs, and want to have a process read this new entry to get
its data.  However, I can have big data, more than the available
place.

As far as I understand it, the read() function one creates to read a
proc entry is called by fs/proc/generic.c:proc_file_read(). There max
available size is given by:

count = min_t(size_t, PROC_BLOCK_SIZE, nbytes);
where PROC_BLOCK_SIZE is 1024.

So, at most, I can write no more than 1k in my proc
entry. Unfortunately, I need to write more.

So my (first) question is simple: how to write more?

However, if this is not possible, it can mean that /proc is not
appropriate to what I want to do. So, is there another solution, more
correct?


Cheers.



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