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[PATCH] swsusp: finally solve mysqld problem

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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>
This commit is contained in:
Rafael J. Wysocki 2006-03-23 03:00:05 -08:00 committed by Linus Torvalds
parent ce6ed29f31
commit fc558a7496
3 changed files with 2 additions and 9 deletions
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4
arch/i386/kernel/signal.c
View File

@ -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 */

4
arch/x86_64/kernel/signal.c
View File

@ -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 */

3
kernel/signal.c
View File

@ -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;