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binder: compilability with kernel 5.10 #71

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binder: compilability with kernel 5.10 #71

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12 changes: 12 additions & 0 deletions binder/binder.c
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Original file line number Diff line number Diff line change
Expand Up @@ -630,7 +630,11 @@ static int binder_update_page_range(struct binder_proc *proc, int allocate,
mm = get_task_mm(proc->tsk);

if (mm) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
mmap_write_lock(mm);
#else
down_write(&mm->mmap_sem);
#endif
vma = proc->vma;
if (vma && mm != proc->vma_vm_mm) {
pr_err("%d: vma mm and task mm mismatch\n",
Expand Down Expand Up @@ -680,7 +684,11 @@ static int binder_update_page_range(struct binder_proc *proc, int allocate,
/* vm_insert_page does not seem to increment the refcount */
}
if (mm) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
mmap_write_unlock(mm);
#else
up_write(&mm->mmap_sem);
#endif
mmput(mm);
}
return 0;
Expand All @@ -707,7 +715,11 @@ static int binder_update_page_range(struct binder_proc *proc, int allocate,
}
err_no_vma:
if (mm) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 8, 0)
mmap_write_unlock(mm);
#else
up_write(&mm->mmap_sem);
#endif
mmput(mm);
}
return -ENOMEM;
Expand Down