1 files changed, 7 insertions, 1 deletions

diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index e2c6b6500c78..50f9087635d8 100644
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -14,15 +14,21 @@ int sysctl_drop_caches;
 
 static void drop_pagecache_sb(struct super_block *sb)
 {
-        struct inode *inode;
+        struct inode *inode, *toput_inode = NULL;
 
         spin_lock(&inode_lock);
         list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
                 if (inode->i_state & (I_FREEING|I_WILL_FREE))
                         continue;
+                __iget(inode);
+                spin_unlock(&inode_lock);
                 __invalidate_mapping_pages(inode->i_mapping, 0, -1, true);
+                iput(toput_inode);
+                toput_inode = inode;
+                spin_lock(&inode_lock);
         }
         spin_unlock(&inode_lock);
+        iput(toput_inode);
 }
 
 static void drop_pagecache(void)