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-rw-r--r--fs/open.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/fs/open.c b/fs/open.c
index a7f6cab81267..f732fb94600c 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -856,8 +856,20 @@ static int do_dentry_open(struct file *f,
* of THPs into the page cache will fail.
*/
smp_mb();
- if (filemap_nr_thps(inode->i_mapping))
- truncate_pagecache(inode, 0);
+ if (filemap_nr_thps(inode->i_mapping)) {
+ struct address_space *mapping = inode->i_mapping;
+
+ filemap_invalidate_lock(inode->i_mapping);
+ /*
+ * unmap_mapping_range just need to be called once
+ * here, because the private pages is not need to be
+ * unmapped mapping (e.g. data segment of dynamic
+ * shared libraries here).
+ */
+ unmap_mapping_range(mapping, 0, 0, 0);
+ truncate_inode_pages(mapping, 0);
+ filemap_invalidate_unlock(inode->i_mapping);
+ }
}
return 0;