[PATCH] swsusp: finally solve mysqld problem

This patch from Pavel moves userland freeze signals handling into more logical
place.  It now hits even with mysqld running.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 2 insertions, 9 deletions

diff --git a/arch/i386/kernel/signal.c b/arch/i386/kernel/signal.c
index 608eac4a7324..5c352c3a9e7f 100644
--- a/arch/i386/kernel/signal.c
+++ b/arch/i386/kernel/signal.c
@@ -583,9 +583,6 @@ static void fastcall do_signal(struct pt_regs *regs)
         if (!user_mode(regs))
                 return;
 
-        if (try_to_freeze())
-                goto no_signal;
-
         if (test_thread_flag(TIF_RESTORE_SIGMASK))
                 oldset = &current->saved_sigmask;
         else
@@ -614,7 +611,6 @@ static void fastcall do_signal(struct pt_regs *regs)
                 return;
         }
 
-no_signal:
         /* Did we come from a system call? */
         if (regs->orig_eax >= 0) {
                 /* Restart the system call - no handlers present */
diff --git a/arch/x86_64/kernel/signal.c b/arch/x86_64/kernel/signal.c
index 5876df116c92..e5f5ce7909a3 100644
--- a/arch/x86_64/kernel/signal.c
+++ b/arch/x86_64/kernel/signal.c
@@ -443,9 +443,6 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
         if (!user_mode(regs))
                 return 1;
 
-        if (try_to_freeze())
-                goto no_signal;
-
         if (!oldset)
                 oldset = &current->blocked;
 
@@ -463,7 +460,6 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
                 return handle_signal(signr, &info, &ka, oldset, regs);
         }
 
- no_signal:
         /* Did we come from a system call? */
         if ((long)regs->orig_rax >= 0) {
                 /* Restart the system call - no handlers present */
diff --git a/kernel/signal.c b/kernel/signal.c
index ea154104a00b..dfb09ba5c013 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1922,6 +1922,8 @@ int get_signal_to_deliver(siginfo_t *info, struct k_sigaction *return_ka,
         sigset_t *mask = &current->blocked;
         int signr = 0;
 
+        try_to_freeze();
+
 relock:
         spin_lock_irq(&current->sighand->siglock);
         for (;;) {
@@ -2307,7 +2309,6 @@ sys_rt_sigtimedwait(const sigset_t __user *uthese,
 
                         timeout = schedule_timeout_interruptible(timeout);
 
-                        try_to_freeze();
                         spin_lock_irq(&current->sighand->siglock);
                         sig = dequeue_signal(current, &these, &info);
                         current->blocked = current->real_blocked;