diff options
| -rw-r--r-- | driver/umem.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/driver/umem.c b/driver/umem.c index e643102..070da46 100644 --- a/driver/umem.c +++ b/driver/umem.c @@ -80,9 +80,20 @@ int pcidriver_umem_sgmap(pcidriver_privdata_t *privdata, umem_handle_t *umem_han mod_info_dbg("allocated space for the SG list.\n"); /* Get the page information */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0) + /*As of Kernel 5.8.0, the mmap_sem member of the MM struct has been + * renamed to mmap_lock + * See: + * https://github.com/torvalds/linux/commit/da1c55f1b272f4bd54671d459b39ea7b54944ef9 + */ + down_read(¤t->mm->mmap_lock); + res = get_user_pages_compat(umem_handle->vma, nr_pages, pages); + up_read(¤t->mm->mmap_lock); +#else down_read(¤t->mm->mmap_sem); res = get_user_pages_compat(umem_handle->vma, nr_pages, pages); up_read(¤t->mm->mmap_sem); +#endif /* Error, not all pages mapped */ if (res < (int)nr_pages) { |