X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=fs%2Fdrop_caches.c;h=3e5637fc377962e1aaca5665f3e03d89366673e3;hb=179f7ebff6be45738c6e2fa68c8d2cc5c2c6308e;hp=e2c6b6500c783a286708e1127025a00b6453f7e0;hpb=07d45da616f8514651360b502314fc9554223a03;p=safe%2Fjmp%2Flinux-2.6

diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index e2c6b65..3e5637f 100644
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -14,15 +14,23 @@ 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;
+		if (inode->i_mapping->nrpages == 0)
+			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)