[PATCH v5 5/6] mm/gup: remove vmas parameter from pin_user_pages()
From: Lorenzo Stoakes <hidden>
Date: 2023-05-14 21:27:35
Also in:
bpf, io-uring, kvm, linux-media, linux-mm, linux-rdma, lkml, netdev
Subsystem:
cisco vic low latency nic driver, infiniband subsystem, io_uring, linux for powerpc (32-bit and 64-bit), media input infrastructure (v4l/dvb), memory management, memory management - core, memory management - gup (get user pages), networking [general], soft-iwarp driver (siw), the rest, virtio core, virtio host (vhost), xdp sockets (af_xdp) · Maintainers:
Nelson Escobar, Satish Kharat, Jason Gunthorpe, Leon Romanovsky, Jens Axboe, Madhavan Srinivasan, Michael Ellerman, Mauro Carvalho Chehab, Andrew Morton, David Hildenbrand, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Bernard Metzler, Linus Torvalds, "Michael S. Tsirkin", Jason Wang, Magnus Karlsson, Maciej Fijalkowski
We are now in a position where no caller of pin_user_pages() requires the vmas parameter at all, so eliminate this parameter from the function and all callers. This clears the way to removing the vmas parameter from GUP altogether. Acked-by: David Hildenbrand <redacted> Acked-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> (for qib) Signed-off-by: Lorenzo Stoakes <redacted> --- arch/powerpc/mm/book3s64/iommu_api.c | 2 +- drivers/infiniband/hw/qib/qib_user_pages.c | 2 +- drivers/infiniband/hw/usnic/usnic_uiom.c | 2 +- drivers/infiniband/sw/siw/siw_mem.c | 2 +- drivers/media/v4l2-core/videobuf-dma-sg.c | 2 +- drivers/vdpa/vdpa_user/vduse_dev.c | 2 +- drivers/vhost/vdpa.c | 2 +- include/linux/mm.h | 3 +-- io_uring/rsrc.c | 2 +- mm/gup.c | 9 +++------ mm/gup_test.c | 9 ++++----- net/xdp/xdp_umem.c | 2 +- 12 files changed, 17 insertions(+), 22 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s64/iommu_api.c
index 81d7185e2ae8..d19fb1f3007d 100644
--- a/arch/powerpc/mm/book3s64/iommu_api.c
+++ b/arch/powerpc/mm/book3s64/iommu_api.c@@ -105,7 +105,7 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, unsigned long ua, ret = pin_user_pages(ua + (entry << PAGE_SHIFT), n, FOLL_WRITE | FOLL_LONGTERM, - mem->hpages + entry, NULL); + mem->hpages + entry); if (ret == n) { pinned += n; continue;
diff --git a/drivers/infiniband/hw/qib/qib_user_pages.c b/drivers/infiniband/hw/qib/qib_user_pages.c
index f693bc753b6b..1bb7507325bc 100644
--- a/drivers/infiniband/hw/qib/qib_user_pages.c
+++ b/drivers/infiniband/hw/qib/qib_user_pages.c@@ -111,7 +111,7 @@ int qib_get_user_pages(unsigned long start_page, size_t num_pages, ret = pin_user_pages(start_page + got * PAGE_SIZE, num_pages - got, FOLL_LONGTERM | FOLL_WRITE, - p + got, NULL); + p + got); if (ret < 0) { mmap_read_unlock(current->mm); goto bail_release;
diff --git a/drivers/infiniband/hw/usnic/usnic_uiom.c b/drivers/infiniband/hw/usnic/usnic_uiom.c
index 2a5cac2658ec..84e0f41e7dfa 100644
--- a/drivers/infiniband/hw/usnic/usnic_uiom.c
+++ b/drivers/infiniband/hw/usnic/usnic_uiom.c@@ -140,7 +140,7 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable, ret = pin_user_pages(cur_base, min_t(unsigned long, npages, PAGE_SIZE / sizeof(struct page *)), - gup_flags, page_list, NULL); + gup_flags, page_list); if (ret < 0) goto out;
diff --git a/drivers/infiniband/sw/siw/siw_mem.c b/drivers/infiniband/sw/siw/siw_mem.c
index f51ab2ccf151..e6e25f15567d 100644
--- a/drivers/infiniband/sw/siw/siw_mem.c
+++ b/drivers/infiniband/sw/siw/siw_mem.c@@ -422,7 +422,7 @@ struct siw_umem *siw_umem_get(u64 start, u64 len, bool writable) umem->page_chunk[i].plist = plist; while (nents) { rv = pin_user_pages(first_page_va, nents, foll_flags, - plist, NULL); + plist); if (rv < 0) goto out_sem_up;
diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c
index 53001532e8e3..405b89ea1054 100644
--- a/drivers/media/v4l2-core/videobuf-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf-dma-sg.c@@ -180,7 +180,7 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma, data, size, dma->nr_pages); err = pin_user_pages(data & PAGE_MASK, dma->nr_pages, gup_flags, - dma->pages, NULL); + dma->pages); if (err != dma->nr_pages) { dma->nr_pages = (err >= 0) ? err : 0;
diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vduse_dev.c
index de97e38c3b82..4d4405f058e8 100644
--- a/drivers/vdpa/vdpa_user/vduse_dev.c
+++ b/drivers/vdpa/vdpa_user/vduse_dev.c@@ -1052,7 +1052,7 @@ static int vduse_dev_reg_umem(struct vduse_dev *dev, goto out; pinned = pin_user_pages(uaddr, npages, FOLL_LONGTERM | FOLL_WRITE, - page_list, NULL); + page_list); if (pinned != npages) { ret = pinned < 0 ? pinned : -ENOMEM; goto out;
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
index 8c1aefc865f0..61223fcbe82b 100644
--- a/drivers/vhost/vdpa.c
+++ b/drivers/vhost/vdpa.c@@ -983,7 +983,7 @@ static int vhost_vdpa_pa_map(struct vhost_vdpa *v, while (npages) { sz2pin = min_t(unsigned long, npages, list_size); pinned = pin_user_pages(cur_base, sz2pin, - gup_flags, page_list, NULL); + gup_flags, page_list); if (sz2pin != pinned) { if (pinned < 0) { ret = pinned;
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 679b41ef7a6d..db09c7062965 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h@@ -2412,8 +2412,7 @@ static inline struct page *get_user_page_vma_remote(struct mm_struct *mm, long get_user_pages(unsigned long start, unsigned long nr_pages, unsigned int gup_flags, struct page **pages); long pin_user_pages(unsigned long start, unsigned long nr_pages, - unsigned int gup_flags, struct page **pages, - struct vm_area_struct **vmas); + unsigned int gup_flags, struct page **pages); long get_user_pages_unlocked(unsigned long start, unsigned long nr_pages, struct page **pages, unsigned int gup_flags); long pin_user_pages_unlocked(unsigned long start, unsigned long nr_pages,
diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c
index b6451f8bc5d5..b56bda46a9eb 100644
--- a/io_uring/rsrc.c
+++ b/io_uring/rsrc.c@@ -1044,7 +1044,7 @@ struct page **io_pin_pages(unsigned long ubuf, unsigned long len, int *npages) ret = 0; mmap_read_lock(current->mm); pret = pin_user_pages(ubuf, nr_pages, FOLL_WRITE | FOLL_LONGTERM, - pages, NULL); + pages); if (pret == nr_pages) *npages = nr_pages; else
diff --git a/mm/gup.c b/mm/gup.c
index 1493cc8dd526..36701b5f0123 100644
--- a/mm/gup.c
+++ b/mm/gup.c@@ -3274,8 +3274,6 @@ EXPORT_SYMBOL(pin_user_pages_remote); * @gup_flags: flags modifying lookup behaviour * @pages: array that receives pointers to the pages pinned. * Should be at least nr_pages long. - * @vmas: array of pointers to vmas corresponding to each page. - * Or NULL if the caller does not require them. * * Nearly the same as get_user_pages(), except that FOLL_TOUCH is not set, and * FOLL_PIN is set.
@@ -3284,15 +3282,14 @@ EXPORT_SYMBOL(pin_user_pages_remote); * see Documentation/core-api/pin_user_pages.rst for details. */ long pin_user_pages(unsigned long start, unsigned long nr_pages, - unsigned int gup_flags, struct page **pages, - struct vm_area_struct **vmas) + unsigned int gup_flags, struct page **pages) { int locked = 1; - if (!is_valid_gup_args(pages, vmas, NULL, &gup_flags, FOLL_PIN)) + if (!is_valid_gup_args(pages, NULL, NULL, &gup_flags, FOLL_PIN)) return 0; return __gup_longterm_locked(current->mm, start, nr_pages, - pages, vmas, &locked, gup_flags); + pages, NULL, &locked, gup_flags); } EXPORT_SYMBOL(pin_user_pages);
diff --git a/mm/gup_test.c b/mm/gup_test.c
index 9ba8ea23f84e..1668ce0e0783 100644
--- a/mm/gup_test.c
+++ b/mm/gup_test.c@@ -146,18 +146,17 @@ static int __gup_test_ioctl(unsigned int cmd, pages + i); break; case PIN_BASIC_TEST: - nr = pin_user_pages(addr, nr, gup->gup_flags, pages + i, - NULL); + nr = pin_user_pages(addr, nr, gup->gup_flags, pages + i); break; case PIN_LONGTERM_BENCHMARK: nr = pin_user_pages(addr, nr, gup->gup_flags | FOLL_LONGTERM, - pages + i, NULL); + pages + i); break; case DUMP_USER_PAGES_TEST: if (gup->test_flags & GUP_TEST_FLAG_DUMP_PAGES_USE_PIN) nr = pin_user_pages(addr, nr, gup->gup_flags, - pages + i, NULL); + pages + i); else nr = get_user_pages(addr, nr, gup->gup_flags, pages + i);
@@ -270,7 +269,7 @@ static inline int pin_longterm_test_start(unsigned long arg) gup_flags, pages); else cur_pages = pin_user_pages(addr, remaining_pages, - gup_flags, pages, NULL); + gup_flags, pages); if (cur_pages < 0) { pin_longterm_test_stop(); ret = cur_pages;
diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c
index 02207e852d79..06cead2b8e34 100644
--- a/net/xdp/xdp_umem.c
+++ b/net/xdp/xdp_umem.c@@ -103,7 +103,7 @@ static int xdp_umem_pin_pages(struct xdp_umem *umem, unsigned long address) mmap_read_lock(current->mm); npgs = pin_user_pages(address, umem->npgs, - gup_flags | FOLL_LONGTERM, &umem->pgs[0], NULL); + gup_flags | FOLL_LONGTERM, &umem->pgs[0]); mmap_read_unlock(current->mm); if (npgs != umem->npgs) {
--
2.40.1