MIPS: Fix always CONFIG_LOONGSON_UART_BASE=y

[mv-sheeva.git] / mm / memory.c

diff --git a/mm/memory.c b/mm/memory.c
index 8e8c183248631cccce48a97943168d1da5e28223..5823698c2b71a9dd79b43986c9929f2cd7485a04 100644 (file)
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2648,6 +2648,7 @@ void unmap_mapping_range(struct address_space *mapping,
                details.last_index = ULONG_MAX;
        details.i_mmap_lock = &mapping->i_mmap_lock;
 
+       mutex_lock(&mapping->unmap_mutex);
        spin_lock(&mapping->i_mmap_lock);
 
        /* Protect against endless unmapping loops */
@@ -2664,6 +2665,7 @@ void unmap_mapping_range(struct address_space *mapping,
        if (unlikely(!list_empty(&mapping->i_mmap_nonlinear)))
                unmap_mapping_range_list(&mapping->i_mmap_nonlinear, &details);
        spin_unlock(&mapping->i_mmap_lock);
+       mutex_unlock(&mapping->unmap_mutex);
 }
 EXPORT_SYMBOL(unmap_mapping_range);