On 5 Jan 2024, at 5:53, Hou Tao wrote: > From: Hou Tao <hout...@huawei.com> > > When invoking virtio_fs_enqueue_req() through kworker, both the > allocation of the sg array and the bounce buffer still use GFP_ATOMIC. > Considering the size of both the sg array and the bounce buffer may be > greater than PAGE_SIZE, use GFP_NOFS instead of GFP_ATOMIC to lower the > possibility of memory allocation failure.
Perhaps not appropriate for this case, but are you aware of memalloc_nofs_save/restore? NFS has been converting over and cleaning out our GFP_NOFS usage: Documentation/core-api/gfp_mask-from-fs-io.rst Ben
