conditionally define U32_MAX

The symbol U32_MAX is defined in several spots.  Change these
definitions to be conditional.  This is in preparation for the next
patch, which centralizes the definition in <linux/kernel.h>.

Signed-off-by: Alex Elder <elder@linaro.org>
Cc: Sage Weil <sage@inktank.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 6 insertions, 0 deletions

diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h
index f8adaee537c2..66a2e832fa8d 100644
--- a/fs/reiserfs/reiserfs.h
+++ b/fs/reiserfs/reiserfs.h
@@ -1958,7 +1958,9 @@ struct treepath var = {.path_length = ILLEGAL_PATH_ELEMENT_OFFSET, .reada = 0,}
 #define MAX_US_INT 0xffff
 
 // reiserfs version 2 has max offset 60 bits. Version 1 - 32 bit offset
+#ifndef U32_MAX
 #define U32_MAX (~(__u32)0)
+#endif /* !U32_MAX */
 
 static inline loff_t max_reiserfs_offset(struct inode *inode)
 {
diff --git a/include/linux/ceph/decode.h b/include/linux/ceph/decode.h
index 0442c3d800f0..27fe66a279b1 100644
--- a/include/linux/ceph/decode.h
+++ b/include/linux/ceph/decode.h
@@ -10,6 +10,7 @@
 
 /* This seemed to be the easiest place to define these */
 
+#ifndef U32_MAX
 #define U8_MAX  ((u8)(~0U))
 #define U16_MAX ((u16)(~0U))
 #define U32_MAX ((u32)(~0U))
@@ -24,6 +25,7 @@
 #define S16_MIN ((s16)(-S16_MAX - 1))
 #define S32_MIN ((s32)(-S32_MAX - 1))
 #define S64_MIN ((s64)(-S64_MAX - 1LL))
+#endif /* !U32_MAX */
 
 /*
  * in all cases,
diff --git a/net/ipv4/tcp_illinois.c b/net/ipv4/tcp_illinois.c
index 8a520996f3d2..f43947235b35 100644
--- a/net/ipv4/tcp_illinois.c
+++ b/net/ipv4/tcp_illinois.c
@@ -23,7 +23,9 @@
 #define ALPHA_MIN       ((3*ALPHA_SCALE)/10)    /* ~0.3 */
 #define ALPHA_MAX       (10*ALPHA_SCALE)        /* 10.0 */
 #define ALPHA_BASE      ALPHA_SCALE             /* 1.0 */
+#ifndef U32_MAX
 #define U32_MAX         ((u32)~0U)
+#endif /* !U32_MAX */
 #define RTT_MAX         (U32_MAX / ALPHA_MAX)   /* 3.3 secs */
 
 #define BETA_SHIFT      6