* Identify tasks which mmap'ed file
@ 2016-05-26 4:28 W. Michael Petullo
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From: W. Michael Petullo @ 2016-05-26 4:28 UTC (permalink / raw)
To: kernelnewbies
Within the kernel and given a struct file *, is it possible to enumerate
the tasks which have mmap/MAP_SHARED'ed the file? I have tried to use
find_get_pages/rmap_walk on the file's f_mapping field, but this does
not seem to work. I find the mapping's first page with find_get_pages,
but rmap_walk does not seem to find any vma's as rmap_walk never calls
the callback function I pass in.
Thank you,
--
Mike
:wq
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