io_uring: add buffer unmap helper
authorPavel Begunkov <asml.silence@gmail.com>
Sun, 11 Apr 2021 00:46:35 +0000 (01:46 +0100)
committerJens Axboe <axboe@kernel.dk>
Mon, 12 Apr 2021 15:32:55 +0000 (09:32 -0600)
commit7f61a1e9ef511660d66ea926b5899559fe94b1d0
tree4c667fe774fff42272e23fd7ca4a270c67c90687
parent3e9424989b59fbab5b46d1db29b271cd29643ab4
io_uring: add buffer unmap helper

Add a helper for unmapping registered buffers, better than double
indexing and will be reused in the future.

Suggested-by: Bijan Mottahedeh <bijan.mottahedeh@oracle.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/66cbc6ea863be865bac7b7080ed6a3d5c542b71f.1618101759.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io_uring.c