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rel_socfpga-5.10.50-lts_21.11.01_pr

rel_socfpga-5.10.50-lts_21.11.01_pr: io_uring: ensure symmetry in handling iter types in loop_rw_iter()
@axboe axboe tagged this 11 Oct 19:46 
[upstream commit 16c8d2df7ec0eed31b7d3b61cb13206a7fb930cc]

When setting up the next segment, we check what type the iter is and
handle it accordingly. However, when incrementing and processed amount
we do not, and both iter advance and addr/len are adjusted, regardless
of type. Split the increment side just like we do on the setup side.

Fixes: 4017eb91a9e7 ("io_uring: make loop_rw_iter() use original user supplied pointers")
Cc: [email protected]
Reported-by: Valentina Palmiotti <[email protected]>
Reviewed-by: Pavel Begunkov <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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