Merge remote-tracking branch 'kgdb/kgdb-next'

[karo-tx-linux.git] / Documentation / filesystems / ceph.txt

diff --git a/Documentation/filesystems/ceph.txt b/Documentation/filesystems/ceph.txt
index 763d8ebbbebdeb59129742daa5f5b7a105ac8fbb..d6030aa3337605e7550397a303820952c8666bc8 100644 (file)
--- a/Documentation/filesystems/ceph.txt
+++ b/Documentation/filesystems/ceph.txt
@@ -119,12 +119,20 @@ Mount Options
        must rely on TCP's error correction to detect data corruption
        in the data payload.
 
-  noasyncreaddir
-       Disable client's use its local cache to satisfy readdir
-       requests.  (This does not change correctness; the client uses
-       cached metadata only when a lease or capability ensures it is
-       valid.)
+  dcache
+        Use the dcache contents to perform negative lookups and
+        readdir when the client has the entire directory contents in
+        its cache.  (This does not change correctness; the client uses
+        cached metadata only when a lease or capability ensures it is
+        valid.)
+
+  nodcache
+        Do not use the dcache as above.  This avoids a significant amount of
+        complex code, sacrificing performance without affecting correctness,
+        and is useful for tracking down bugs.
 
+  noasyncreaddir
+       Do not use the dcache as above for readdir.
 
 More Information
 ================