Save a few bytes by allowing the read/write specific fields of the
structures to share storage.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
include/linux/nfs_xdr.h | 24 +++++++++++++++++-------
1 file changed, 17 insertions(+), 7 deletions(-)
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 7f5535e5e852..343e44166346 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -608,9 +608,13 @@ struct nfs_pgio_args {
__u32 count;
unsigned int pgbase;
struct page ** pages;
- unsigned int replen; /* used by read */
- const u32 * bitmask; /* used by write */
- enum nfs3_stable_how stable; /* used by write */
+ union {
+ unsigned int replen; /* used by read */
+ struct {
+ const u32 * bitmask; /* used by write */
+ enum nfs3_stable_how stable; /* used by write */
+ };
+ };
};
struct nfs_pgio_res {
@@ -618,10 +622,16 @@ struct nfs_pgio_res {
struct nfs_fattr * fattr;
__u32 count;
__u32 op_status;
- int eof; /* used by read */
- unsigned int replen; /* used by read */
- struct nfs_writeverf * verf; /* used by write */
- const struct nfs_server *server; /* used by write */
+ union {
+ struct {
+ unsigned int replen; /* used by read */
+ int eof; /* used by read */
+ };
+ struct {
+ struct nfs_writeverf * verf; /* used by write */
+ const struct nfs_server *server; /* used by write */
+ };
+ };
};
/*
--
2.17.1
