diff options
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 15d47d5e7951..27716e4932bc 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1734,7 +1734,7 @@ int tcp_mmap(struct file *file, struct socket *sock, return -EPERM; vma->vm_flags &= ~(VM_MAYWRITE | VM_MAYEXEC); - /* Instruct vm_insert_page() to not down_read(mmap_sem) */ + /* Instruct vm_insert_page() to not mmap_read_lock(mm) */ vma->vm_flags |= VM_MIXEDMAP; vma->vm_ops = &tcp_vm_ops; @@ -1762,11 +1762,11 @@ static int tcp_zerocopy_receive(struct sock *sk, sock_rps_record_flow(sk); - down_read(¤t->mm->mmap_sem); + mmap_read_lock(current->mm); vma = find_vma(current->mm, address); if (!vma || vma->vm_start > address || vma->vm_ops != &tcp_vm_ops) { - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); return -EINVAL; } zc->length = min_t(unsigned long, zc->length, vma->vm_end - address); @@ -1827,7 +1827,7 @@ static int tcp_zerocopy_receive(struct sock *sk, frags++; } out: - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); if (length) { WRITE_ONCE(tp->copied_seq, seq); tcp_rcv_space_adjust(sk); |