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| author | Zhang, Yanmin <yanmin_zhang@linux.intel.com> | 2008-04-29 01:00:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:14 -0700 |
| commit | 44f564a4bf6ac70f2a84806203045cf515bc9367 (patch) | |
| tree | 46b97186393b7473711c840d4f5e5ce722a5e37d | |
| parent | a5f75e7f256f75759ec3d6dbef0ba932f1b397d2 (diff) | |
| download | linux-3.10-44f564a4bf6ac70f2a84806203045cf515bc9367.tar.gz linux-3.10-44f564a4bf6ac70f2a84806203045cf515bc9367.tar.bz2 linux-3.10-44f564a4bf6ac70f2a84806203045cf515bc9367.zip | |
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>
| -rw-r--r-- | include/linux/kernel.h | 3 | ||||
| -rw-r--r-- | ipc/msg.c | 12 | ||||
| -rw-r--r-- | ipc/util.c | 4 | ||||
| -rw-r--r-- | ipc/util.h | 1 |
4 files changed, 11 insertions, 9 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index ad5d05efcd1..53839ba265e 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 4a858f98a76..32494e8cc7a 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -346,19 +346,19 @@ copy_msqid_to_user(void __user *buf, struct msqid64_ds *in, int version) 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 c4f1d33b89e..4c465cb2236 100644 --- a/ipc/util.c +++ b/ipc/util.c @@ -133,8 +133,8 @@ void ipc_init_ids(struct ipc_ids *ids) 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 791c5c01271..cdb966aebe0 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); |