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-rw-r--r--net/nfs.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/net/nfs.h b/net/nfs.h
index 712afa089a..de8a0c64c0 100644
--- a/net/nfs.h
+++ b/net/nfs.h
@@ -38,8 +38,14 @@
/* Block size used for NFS read accesses. A RPC reply packet (including all
* headers) must fit within a single Ethernet frame to avoid fragmentation.
- * Chosen to be a power of two, as most NFS servers are optimized for this. */
-#define NFS_READ_SIZE 1024
+ * However, if CONFIG_IP_DEFRAG is set, the config file may want to use a
+ * bigger value. In any case, most NFS servers are optimized for a power of 2.
+ */
+#ifdef CONFIG_NFS_READ_SIZE
+#define NFS_READ_SIZE CONFIG_NFS_READ_SIZE
+#else
+#define NFS_READ_SIZE 1024 /* biggest power of two that fits Ether frame */
+#endif
#define NFS_MAXLINKDEPTH 16