Re: [PATCH v4 23/23] nvme-pci: allow mmaping the CMB in userspace

[PATCH v4 00/23] Userspace P2PDMA with O_DIRECT NVMe devices · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 16/23] iov_iter: introduce iov_iter_get_pages_[alloc_]flags() · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
Re: [PATCH v4 16/23] iov_iter: introduce iov_iter_get_pages_[alloc_]flags() · Christoph Hellwig <hch@lst.de> · 2021-12-21
[PATCH v4 19/23] block: set FOLL_PCI_P2PDMA in __bio_iov_iter_get_pages() · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 11/23] nvme-pci: convert to using dma_map_sgtable() · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
Re: [PATCH v4 11/23] nvme-pci: convert to using dma_map_sgtable() · Chaitanya Kulkarni <hidden> · 2021-12-13
Re: [PATCH v4 11/23] nvme-pci: convert to using dma_map_sgtable() · Logan Gunthorpe <logang@deltatee.com> · 2021-12-13
[PATCH v4 03/23] PCI/P2PDMA: Attempt to set map_type if it has not been set · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
Re: [PATCH v4 03/23] PCI/P2PDMA: Attempt to set map_type if it has not been set · Chaitanya Kulkarni <hidden> · 2021-12-13
[PATCH v4 20/23] block: set FOLL_PCI_P2PDMA in bio_map_user_iov() · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 21/23] mm: use custom page_free for P2PDMA pages · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
Re: [PATCH v4 21/23] mm: use custom page_free for P2PDMA pages · Christoph Hellwig <hch@lst.de> · 2021-12-21
Re: [PATCH v4 21/23] mm: use custom page_free for P2PDMA pages · Logan Gunthorpe <logang@deltatee.com> · 2021-12-21
[PATCH v4 23/23] nvme-pci: allow mmaping the CMB in userspace · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
Re: [PATCH v4 23/23] nvme-pci: allow mmaping the CMB in userspace · Christoph Hellwig <hch@lst.de> · 2021-12-21
[PATCH v4 02/23] lib/scatterlist: add flag for indicating P2PDMA segments in an SGL · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
Re: [PATCH v4 02/23] lib/scatterlist: add flag for indicating P2PDMA segments in an SGL · Chaitanya Kulkarni <hidden> · 2021-12-13
Re: [PATCH v4 02/23] lib/scatterlist: add flag for indicating P2PDMA segments in an SGL · Christoph Hellwig <hch@lst.de> · 2021-12-21
[PATCH v4 04/23] PCI/P2PDMA: Expose pci_p2pdma_map_type() · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
Re: [PATCH v4 04/23] PCI/P2PDMA: Expose pci_p2pdma_map_type() · Chaitanya Kulkarni <hidden> · 2021-12-13
[PATCH v4 06/23] dma-mapping: allow EREMOTEIO return code for P2PDMA transfers · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 10/23] nvme-pci: check DMA ops when indicating support for PCI P2PDMA · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
Re: [PATCH v4 10/23] nvme-pci: check DMA ops when indicating support for PCI P2PDMA · Chaitanya Kulkarni <hidden> · 2021-12-13
[PATCH v4 09/23] iommu/dma: support PCI P2PDMA pages in dma-iommu map_sg · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 08/23] dma-mapping: add flags to dma_map_ops to indicate PCI P2PDMA support · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 15/23] mm: introduce FOLL_PCI_P2PDMA to gate getting PCI P2PDMA pages · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 07/23] dma-direct: support PCI P2PDMA pages in dma-direct map_sg · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 13/23] RDMA/rw: drop pci_p2pdma_[un]map_sg() · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 14/23] PCI/P2PDMA: Remove pci_p2pdma_[un]map_sg() · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 05/23] PCI/P2PDMA: Introduce helpers for dma_map_sg implementations · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 01/23] lib/scatterlist: cleanup macros into static inline functions · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
Re: [PATCH v4 01/23] lib/scatterlist: cleanup macros into static inline functions · Chaitanya Kulkarni <hidden> · 2021-12-13
Re: [PATCH v4 01/23] lib/scatterlist: cleanup macros into static inline functions · Christoph Hellwig <hch@lst.de> · 2021-12-21
Re: [PATCH v4 01/23] lib/scatterlist: cleanup macros into static inline functions · Logan Gunthorpe <logang@deltatee.com> · 2021-12-21
Re: [PATCH v4 01/23] lib/scatterlist: cleanup macros into static inline functions · Christoph Hellwig <hch@lst.de> · 2021-12-22
[PATCH v4 17/23] block: add check when merging zone device pages · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
Re: [PATCH v4 17/23] block: add check when merging zone device pages · Christoph Hellwig <hch@lst.de> · 2021-12-21
[PATCH v4 18/23] lib/scatterlist: add check when merging zone device pages · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 22/23] PCI/P2PDMA: Introduce pci_mmap_p2pmem() · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17
[PATCH v4 12/23] RDMA/core: introduce ib_dma_pci_p2p_dma_supported() · Logan Gunthorpe <logang@deltatee.com> · 2021-11-17

From: Christoph Hellwig <hch@lst.de>
Date: 2021-12-21 09:07:53
Also in: linux-iommu, linux-mm, linux-nvme, linux-pci, lkml

 	file->private_data = ctrl;
+
+	if (ctrl->ops->mmap_file_open)
+		ctrl->ops->mmap_file_open(ctrl, file);
+

The callout doesn't really have anything to do with mmap, that is just
how you use it.

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