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 <elder@inktank.com>
Reviewed-by: Dan Mick <dan.mick@inktank.com>

diff --git a/include/linux/ceph/decode.h b/include/linux/ceph/decode.h
index 4bbf2db..cd679f2 100644 (file)
--- a/include/linux/ceph/decode.h
+++ b/include/linux/ceph/decode.h
@@ -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)                    \
@@ -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)
@@ -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)                    \
@@ -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)              \