diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2025-02-28 11:25:36 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2025-02-28 11:25:36 +0200 |
| commit | 8918e180a6fd67fc9864f2ba18186b4573f8a61b (patch) | |
| tree | 76a85b3cf4c35818c3b622b65da7ae3dae5ff6ac /io_uring/kbuf.c | |
| parent | 67093883808b5b39894d8859937be4468eca50db (diff) | |
| parent | 33e26f3544a558e7476eb221ff33173759b3a116 (diff) | |
Merge drm/drm-next into drm-intel-next
Sync to fix conlicts between drm-xe-next and drm-intel-next.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'io_uring/kbuf.c')
| -rw-r--r-- | io_uring/kbuf.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index 04bf493eecae..8e72de7712ac 100644 --- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -415,6 +415,13 @@ void io_destroy_buffers(struct io_ring_ctx *ctx) } } +static void io_destroy_bl(struct io_ring_ctx *ctx, struct io_buffer_list *bl) +{ + scoped_guard(mutex, &ctx->mmap_lock) + WARN_ON_ONCE(xa_erase(&ctx->io_bl_xa, bl->bgid) != bl); + io_put_bl(ctx, bl); +} + int io_remove_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) { struct io_provide_buf *p = io_kiocb_to_cmd(req, struct io_provide_buf); @@ -636,12 +643,13 @@ int io_register_pbuf_ring(struct io_ring_ctx *ctx, void __user *arg) /* if mapped buffer ring OR classic exists, don't allow */ if (bl->flags & IOBL_BUF_RING || !list_empty(&bl->buf_list)) return -EEXIST; - } else { - free_bl = bl = kzalloc(sizeof(*bl), GFP_KERNEL); - if (!bl) - return -ENOMEM; + io_destroy_bl(ctx, bl); } + free_bl = bl = kzalloc(sizeof(*bl), GFP_KERNEL); + if (!bl) + return -ENOMEM; + mmap_offset = (unsigned long)reg.bgid << IORING_OFF_PBUF_SHIFT; ring_size = flex_array_size(br, bufs, reg.ring_entries); |