tree 60bdfd7b21e283373c64f1dbb21db2607b617a24
parent 98447d65b4a7a59f8ea37dc6e5d743247d9a7b01
author Jens Axboe <axboe@kernel.dk> 1602773184 -0600
committer Jens Axboe <axboe@kernel.dk> 1602948346 -0600

io_uring: COW io_identity on mismatch

If the io_identity doesn't completely match the task, then create a
copy of it and use that. The existing copy remains valid until the last
user of it has gone away.

This also changes the personality lookup to be indexed by io_identity,
instead of creds directly.

Signed-off-by: Jens Axboe <axboe@kernel.dk>