Commit 28d52235 authored by Trond Myklebust's avatar Trond Myklebust
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NFSv4: Save a few bytes in the nfs_pgio_args/res 



Save a few bytes by allowing the read/write specific fields of the
structures to share storage.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
parent 8d8928d8

include/linux/nfs_xdr.h

+17 −7
Original line number Diff line number Diff line
@@ -608,21 +608,31 @@ struct nfs_pgio_args { 
	__u32			count;

	unsigned int		pgbase;

	struct page **		pages;

	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 {

	struct nfs4_sequence_res	seq_res;

	struct nfs_fattr *	fattr;

	__u32			count;

	__u32			op_status;

	int			eof;		/* used by read */

	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 */

		};

	};

};



/*

 * Arguments to the commit call.