- fix-sighand-siglock-usage-in-kernel-acctc.patch removed from -mm tree

[akpm@xxxxxxxx]

The patch titled

     Fix sighand->siglock usage in kernel/acct.c

has been removed from the -mm tree.  Its filename is

     fix-sighand-siglock-usage-in-kernel-acctc.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
Subject: Fix sighand->siglock usage in kernel/acct.c
From: OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>

IRQs must be disabled before taking ->siglock.

Noticed by lockdep.

Signed-off-by: OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---

 kernel/acct.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff -puN kernel/acct.c~fix-sighand-siglock-usage-in-kernel-acctc kernel/acct.c
--- a/kernel/acct.c~fix-sighand-siglock-usage-in-kernel-acctc
+++ a/kernel/acct.c
@@ -488,7 +488,7 @@ static void do_acct_process(struct file 
 		old_encode_dev(tty_devnum(current->signal->tty)) : 0;
 	read_unlock(&tasklist_lock);
 
-	spin_lock(&current->sighand->siglock);
+	spin_lock_irq(&current->sighand->siglock);
 	ac.ac_utime = encode_comp_t(jiffies_to_AHZ(cputime_to_jiffies(pacct->ac_utime)));
 	ac.ac_stime = encode_comp_t(jiffies_to_AHZ(cputime_to_jiffies(pacct->ac_stime)));
 	ac.ac_flag = pacct->ac_flag;
@@ -496,7 +496,7 @@ static void do_acct_process(struct file 
 	ac.ac_minflt = encode_comp_t(pacct->ac_minflt);
 	ac.ac_majflt = encode_comp_t(pacct->ac_majflt);
 	ac.ac_exitcode = pacct->ac_exitcode;
-	spin_unlock(&current->sighand->siglock);
+	spin_unlock_irq(&current->sighand->siglock);
 	ac.ac_io = encode_comp_t(0 /* current->io_usage */);	/* %% */
 	ac.ac_rw = encode_comp_t(ac.ac_io / 1024);
 	ac.ac_swaps = encode_comp_t(0);
_

Patches currently in -mm which might be from hirofumi@xxxxxxxxxxxxxxxxxx are

fat-cleanup-fat_get_blocks.patch

-
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