Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 219/236] io_uring: IORING_OP_WRITE needs hash_reg_file set | Date | Mon, 13 Sep 2021 15:15:24 +0200 |
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From: Jens Axboe <axboe@kernel.dk>
commit 7b3188e7ed54102a5dcc73d07727f41fb528f7c8 upstream.
During some testing, it became evident that using IORING_OP_WRITE doesn't hash buffered writes like the other writes commands do. That's simply an oversight, and can cause performance regressions when doing buffered writes with this command.
Correct that and add the flag, so that buffered writes are correctly hashed when using the non-iovec based write command.
Cc: stable@vger.kernel.org Fixes: 3a6820f2bb8a ("io_uring: add non-vectored read/write commands") Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- fs/io_uring.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -889,6 +889,7 @@ static const struct io_op_def io_op_defs }, [IORING_OP_WRITE] = { .needs_file = 1, + .hash_reg_file = 1, .unbound_nonreg_file = 1, .pollout = 1, .async_size = sizeof(struct io_async_rw),
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