ceph: define ceph_encode_8_safe()

It's kind of a silly macro, but ceph_encode_8_safe() is the only one missing from an otherwise pretty complete set. It's not used, but neither are a couple of the others in this set.

While in there, insert some whitespace to tidy up the alignment of the line-terminating backslashes in some of the macro definitions.

Signed-off-by Alex Elder <[email protected]>

---
  include/linux/ceph/decode.h |   29 +++++++++++++++++------------
  1 file changed, 17 insertions(+), 12 deletions(-)

include/linux/ceph/decode.h +4 -4

index 4bbf2db..cd679f2 100644
@@ -52,10 +52,10 @@ static inline int ceph_has_room(void **p, void *end,
 size_t n)
  	return end >= *p && n <= end - *p;
  }
 
-#define ceph_decode_need(p, end, n, bad)		\
-	do {						\
-		if (!likely(ceph_has_room(p, end, n)))	\
-			goto bad;			\
+#define ceph_decode_need(p, end, n, bad)			\
+	do {							\
+		if (!likely(ceph_has_room(p, end, n)))		\
+			goto bad;				\
  	} while (0)
 

  #define ceph_decode_64_safe(p, end, v, bad)			\

include/linux/ceph/decode.h +2 -2

@@ -99,8 +99,8 @@ static inline int ceph_has_room(void **p, void *end,
 size_t n)
   *
   * There are two possible failures:
   *   - converting the string would require accessing memory at or
- *     beyond the "end" pointer provided (-E
- *   - memory could not be allocated for the result
+ *     beyond the "end" pointer provided (-ERANGE)
+ *   - memory could not be allocated for the result (-ENOMEM)
   */
  static inline char *ceph_extract_encoded_string(void **p, void *end,

size_t *lenp, gfp_t gfp)

include/linux/ceph/decode.h +4 -4

@@ -217,10 +217,10 @@ static inline void ceph_encode_string(void **p,
 void *end,
  	*p += len;
  }
 
-#define ceph_encode_need(p, end, n, bad)		\
-	do {						\
-		if (!likely(ceph_has_room(p, end, n)))	\
-			goto bad;			\
+#define ceph_encode_need(p, end, n, bad)			\
+	do {							\
+		if (!likely(ceph_has_room(p, end, n)))		\
+			goto bad;				\
  	} while (0)
 

  #define ceph_encode_64_safe(p, end, v, bad)			\

include/linux/ceph/decode.h +7 -2

@@ -231,12 +231,17 @@ static inline void ceph_encode_string(void **p,
 void *end,
  #define ceph_encode_32_safe(p, end, v, bad)			\
  	do {							\
  		ceph_encode_need(p, end, sizeof(u32), bad);	\
-		ceph_encode_32(p, v);			\
+		ceph_encode_32(p, v);				\
  	} while (0)
  #define ceph_encode_16_safe(p, end, v, bad)			\
  	do {							\
  		ceph_encode_need(p, end, sizeof(u16), bad);	\
-		ceph_encode_16(p, v);			\
+		ceph_encode_16(p, v);				\
+	} while (0)
+#define ceph_encode_8_safe(p, end, v, bad)			\
+	do {							\
+		ceph_encode_need(p, end, sizeof(u8), bad);	\
+		ceph_encode_8(p, v);				\
  	} while (0)
 

  #define ceph_encode_copy_safe(p, end, pv, n, bad)		\