From 7cd7b9575270e4c4f80cc5ff71b13f4102b59b9e Mon Sep 17 00:00:00 2001 From: Pavel Begunkov Date: Fri, 29 Nov 2024 13:34:39 +0000 Subject: io_uring/memmap: unify io_uring mmap'ing code All mapped memory is now backed by regions and we can unify and clean up io_region_validate_mmap() and io_uring_mmap(). Extract a function looking up a region, the rest of the handling should be generic and just needs the region. There is one more ring type specific code, i.e. the mmaping size truncation quirk for IORING_OFF_[S,C]Q_RING, which is left as is. Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/f5e1eda1562bfd34276de07465525ae5f10e1e84.1732886067.git.asml.silence@gmail.com Signed-off-by: Jens Axboe --- io_uring/kbuf.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'io_uring/kbuf.c') diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index 2dfb9f9419a0..e91260a6156b 100644 --- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -748,8 +748,5 @@ struct io_mapped_region *io_pbuf_get_region(struct io_ring_ctx *ctx, bl = xa_load(&ctx->io_bl_xa, bgid); if (!bl || !(bl->flags & IOBL_BUF_RING)) return NULL; - if (WARN_ON_ONCE(!io_region_is_set(&bl->region))) - return NULL; - return &bl->region; } -- cgit v1.2.3