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authorNamhyung Kim <namhyung@gmail.com>2010-09-14 21:43:47 +0900
committerThomas Gleixner <tglx@linutronix.de>2010-09-18 12:19:21 +0200
commita3c74c52570c0c4ac90c9a0216de800c39089ba7 (patch)
tree4030b626478c5f51fef1ed4524424f6d83b9a128
parent1dcc41bb037533839753df983d31778b30b67d93 (diff)
downloadop-kernel-dev-a3c74c52570c0c4ac90c9a0216de800c39089ba7.zip
op-kernel-dev-a3c74c52570c0c4ac90c9a0216de800c39089ba7.tar.gz
futex: Mark restart_block.futex.uaddr[2] __user
@uaddr and @uaddr2 fields in restart_block.futex are user pointers. Add __user and remove unnecessary casts. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Darren Hart <dvhltc@us.ibm.com> LKML-Reference: <1284468228-8723-2-git-send-email-namhyung@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--include/linux/thread_info.h4
-rw-r--r--kernel/futex.c4
2 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index a8cc4e1..c9069654 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -23,12 +23,12 @@ struct restart_block {
};
/* For futex_wait and futex_wait_requeue_pi */
struct {
- u32 *uaddr;
+ u32 __user *uaddr;
u32 val;
u32 flags;
u32 bitset;
u64 time;
- u32 *uaddr2;
+ u32 __user *uaddr2;
} futex;
/* For nanosleep */
struct {
diff --git a/kernel/futex.c b/kernel/futex.c
index 464de27..45e448a 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1843,7 +1843,7 @@ retry:
restart = &current_thread_info()->restart_block;
restart->fn = futex_wait_restart;
- restart->futex.uaddr = (u32 *)uaddr;
+ restart->futex.uaddr = uaddr;
restart->futex.val = val;
restart->futex.time = abs_time->tv64;
restart->futex.bitset = bitset;
@@ -1869,7 +1869,7 @@ out:
static long futex_wait_restart(struct restart_block *restart)
{
- u32 __user *uaddr = (u32 __user *)restart->futex.uaddr;
+ u32 __user *uaddr = restart->futex.uaddr;
int fshared = 0;
ktime_t t, *tp = NULL;
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