Commit 40dad765 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring: enable shmem/memfd memory registration 



Relax buffer registration restictions, which filters out file backed
memory, and allow shmem/memfd as they have normal anonymous pages
underneath.

Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent d0acdee2

fs/io_uring.c

+2 −0
Original line number Diff line number Diff line
@@ -8306,6 +8306,8 @@ static int io_sqe_buffer_register(struct io_ring_ctx *ctx, struct iovec *iov, 
		for (i = 0; i < nr_pages; i++) {

			struct vm_area_struct *vma = vmas[i];



			if (vma_is_shmem(vma))

				continue;

			if (vma->vm_file &&

			    !is_file_hugepages(vma->vm_file)) {

				ret = -EOPNOTSUPP;