LU-2139 osc: Track and limit "unstable" pages

[fs/lustre-release.git] / lustre / llite / llite_internal.h

diff --git a/lustre/llite/llite_internal.h b/lustre/llite/llite_internal.h
index 957ca24..cc7fc04 100644 (file)
--- a/lustre/llite/llite_internal.h
+++ b/lustre/llite/llite_internal.h
@@ -473,6 +473,10 @@ struct ll_sb_info {
 
         struct lprocfs_stats     *ll_stats; /* lprocfs stats counter */
 
+       /* Used to track "unstable" pages on a client, and maintain a
+        * LRU list of clean pages. An "unstable" page is defined as
+        * any page which is sent to a server as part of a bulk request,
+        * but is uncommitted to stable storage. */
        struct cl_client_cache    ll_cache;
 
         struct lprocfs_stats     *ll_ra_stats;