These changes are a raw update to a vanilla kernel 4.1.10, with the

[kvmfornfv.git] / kernel / fs / xfs / libxfs / xfs_da_format.h

diff --git a/kernel/fs/xfs/libxfs/xfs_da_format.h b/kernel/fs/xfs/libxfs/xfs_da_format.h
index 74bcbab..b14bbd6 100644 (file)
--- a/kernel/fs/xfs/libxfs/xfs_da_format.h
+++ b/kernel/fs/xfs/libxfs/xfs_da_format.h
@@ -680,8 +680,15 @@ typedef struct xfs_attr_leaf_name_remote {
 typedef struct xfs_attr_leafblock {
        xfs_attr_leaf_hdr_t     hdr;    /* constant-structure header block */
        xfs_attr_leaf_entry_t   entries[1];     /* sorted on key, not name */
-       xfs_attr_leaf_name_local_t namelist;    /* grows from bottom of buf */
-       xfs_attr_leaf_name_remote_t valuelist;  /* grows from bottom of buf */
+       /*
+        * The rest of the block contains the following structures after the
+        * leaf entries, growing from the bottom up. The variables are never
+        * referenced and definining them can actually make gcc optimize away
+        * accesses to the 'entries' array above index 0 so don't do that.
+        *
+        * xfs_attr_leaf_name_local_t namelist;
+        * xfs_attr_leaf_name_remote_t valuelist;
+        */
 } xfs_attr_leafblock_t;
 
 /*