diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:54:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:54:46 -0700 |
| commit | a5ad5742f671de906adbf29fbedf0a04705cebad (patch) | |
| tree | 88d1a4c18e2025a5a8335dbbc9dea8bebeba5789 /drivers/infiniband/core/umem_odp.c | |
| parent | 013b2deba9a6b80ca02f4fafd7dedf875e9b4450 (diff) | |
| parent | 4fa7252338a56fbc90220e6330f136a379175a7a (diff) | |
Merge branch 'akpm' (patches from Andrew)
Merge even more updates from Andrew Morton:
- a kernel-wide sweep of show_stack()
- pagetable cleanups
- abstract out accesses to mmap_sem - prep for mmap_sem scalability work
- hch's user acess work
Subsystems affected by this patch series: debug, mm/pagemap, mm/maccess,
mm/documentation.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (93 commits)
include/linux/cache.h: expand documentation over __read_mostly
maccess: return -ERANGE when probe_kernel_read() fails
x86: use non-set_fs based maccess routines
maccess: allow architectures to provide kernel probing directly
maccess: move user access routines together
maccess: always use strict semantics for probe_kernel_read
maccess: remove strncpy_from_unsafe
tracing/kprobes: handle mixed kernel/userspace probes better
bpf: rework the compat kernel probe handling
bpf:bpf_seq_printf(): handle potentially unsafe format string better
bpf: handle the compat string in bpf_trace_copy_string better
bpf: factor out a bpf_trace_copy_string helper
maccess: unify the probe kernel arch hooks
maccess: remove probe_read_common and probe_write_common
maccess: rename strnlen_unsafe_user to strnlen_user_nofault
maccess: rename strncpy_from_unsafe_strict to strncpy_from_kernel_nofault
maccess: rename strncpy_from_unsafe_user to strncpy_from_user_nofault
maccess: update the top of file comment
maccess: clarify kerneldoc comments
maccess: remove duplicate kerneldoc comments
...
Diffstat (limited to 'drivers/infiniband/core/umem_odp.c')
| -rw-r--r-- | drivers/infiniband/core/umem_odp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c index 3b1e627d9a8d..ccd28405451c 100644 --- a/drivers/infiniband/core/umem_odp.c +++ b/drivers/infiniband/core/umem_odp.c @@ -429,7 +429,7 @@ int ib_umem_odp_map_dma_pages(struct ib_umem_odp *umem_odp, u64 user_virt, ALIGN(bcnt, PAGE_SIZE) / PAGE_SIZE, PAGE_SIZE / sizeof(struct page *)); - down_read(&owning_mm->mmap_sem); + mmap_read_lock(owning_mm); /* * Note: this might result in redundent page getting. We can * avoid this by checking dma_list to be 0 before calling @@ -440,7 +440,7 @@ int ib_umem_odp_map_dma_pages(struct ib_umem_odp *umem_odp, u64 user_virt, npages = get_user_pages_remote(owning_process, owning_mm, user_virt, gup_num_pages, flags, local_page_list, NULL, NULL); - up_read(&owning_mm->mmap_sem); + mmap_read_unlock(owning_mm); if (npages < 0) { if (npages != -EAGAIN) |