Hello list,
I applied MAP_DENYWRITE flag to shared object ( kernel 4.8)
I compiled test shared library and small executable who uses it.
Then executable which used it works as expected,
and any attempt to change shared library rejected with EXTBUSY error.
But when executable terminated, library is still busy.
I though that kernel will clean inode counters, if nobody else reference it
(and this is my case - I am the only user of this lib)
Is this behaviour a BUG , I mean reference count is zero, but kernel not zeroed i_writecount ?)
I suppose that the memory is unmapped, but how can I confirm it ? ( do not have pid for pmap )
Regars,
Lev
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