Hi Linus,
The attached patch fixes the following problems:
1) we have to raise the capabilties in shm_remove_name for the
process, since some unpriviledged process could be the last
attachee. sys_shmctl did the permission check already.
2) There was a _big_ memory hole in the truncate logic. shm_free did
not free the actual pages (shame on me). I cleaned up the logic and
names of the alloc/free routines.
Greetings
Christoph
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