ipc: add definitions of USHORT_MAX and others Add definitions of USHORT_MAX and others into kernel. ipc uses it and slub implementation might also use it. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Reviewed-by: Christoph Lameter <clameter@sgi.com> Cc: Nadia Derbey <Nadia.Derbey@bull.net> Cc: "Pierre Peiffer" <peifferp@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index ad5d05e..53839ba 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h
@@ -20,6 +20,9 @@ extern const char linux_banner[]; extern const char linux_proc_banner[]; +#define USHORT_MAX ((u16)(~0U)) +#define SHORT_MAX ((s16)(USHORT_MAX>>1)) +#define SHORT_MIN (-SHORT_MAX - 1) #define INT_MAX ((int)(~0U>>1)) #define INT_MIN (-INT_MAX - 1) #define UINT_MAX (~0U)
diff --git a/ipc/msg.c b/ipc/msg.c index 4a858f9..32494e8 100644 --- a/ipc/msg.c +++ b/ipc/msg.c
@@ -346,19 +346,19 @@ out.msg_rtime = in->msg_rtime; out.msg_ctime = in->msg_ctime; - if (in->msg_cbytes > USHRT_MAX) - out.msg_cbytes = USHRT_MAX; + if (in->msg_cbytes > USHORT_MAX) + out.msg_cbytes = USHORT_MAX; else out.msg_cbytes = in->msg_cbytes; out.msg_lcbytes = in->msg_cbytes; - if (in->msg_qnum > USHRT_MAX) - out.msg_qnum = USHRT_MAX; + if (in->msg_qnum > USHORT_MAX) + out.msg_qnum = USHORT_MAX; else out.msg_qnum = in->msg_qnum; - if (in->msg_qbytes > USHRT_MAX) - out.msg_qbytes = USHRT_MAX; + if (in->msg_qbytes > USHORT_MAX) + out.msg_qbytes = USHORT_MAX; else out.msg_qbytes = in->msg_qbytes; out.msg_lqbytes = in->msg_qbytes;
diff --git a/ipc/util.c b/ipc/util.c index c4f1d33..4c465cb 100644 --- a/ipc/util.c +++ b/ipc/util.c
@@ -133,8 +133,8 @@ ids->seq = 0; { int seq_limit = INT_MAX/SEQ_MULTIPLIER; - if(seq_limit > USHRT_MAX) - ids->seq_max = USHRT_MAX; + if (seq_limit > USHORT_MAX) + ids->seq_max = USHORT_MAX; else ids->seq_max = seq_limit; }
diff --git a/ipc/util.h b/ipc/util.h index 791c5c0..cdb966a 100644 --- a/ipc/util.h +++ b/ipc/util.h
@@ -12,7 +12,6 @@ #include <linux/err.h> -#define USHRT_MAX 0xffff #define SEQ_MULTIPLIER (IPCMNI) void sem_init (void);