diff --git a/[refs] b/[refs]
index 6ff529a616d7..ffee697b8ed6 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5a2ae913f5229d6e1d4a666f0477350789d5128e
+refs/heads/master: 55c37a840d9ec0ebed5c944355156d490b1ad5d1
diff --git a/trunk/Documentation/sysctl/vm.txt b/trunk/Documentation/sysctl/vm.txt
index c4de6359d440..e6fb1ec2744b 100644
--- a/trunk/Documentation/sysctl/vm.txt
+++ b/trunk/Documentation/sysctl/vm.txt
@@ -585,7 +585,9 @@ caching of directory and inode objects.
 At the default value of vfs_cache_pressure=100 the kernel will attempt to
 reclaim dentries and inodes at a "fair" rate with respect to pagecache and
 swapcache reclaim.  Decreasing vfs_cache_pressure causes the kernel to prefer
-to retain dentry and inode caches.  Increasing vfs_cache_pressure beyond 100
+to retain dentry and inode caches. When vfs_cache_pressure=0, the kernel will
+never reclaim dentries and inodes due to memory pressure and this can easily
+lead to out-of-memory conditions. Increasing vfs_cache_pressure beyond 100
 causes the kernel to prefer to reclaim dentries and inodes.
 
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