The patch titled
Subject: kmod-avoid-deadlock-by-recursive-kmod-call-fix
has been added to the -mm tree. Its filename is
kmod-avoid-deadlock-by-recursive-kmod-call-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: kmod-avoid-deadlock-by-recursive-kmod-call-fix
add comment to kmod_thread_locker
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Cc: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/kmod.c | 6 ++++++
1 file changed, 6 insertions(+)
diff -puN kernel/kmod.c~kmod-avoid-deadlock-by-recursive-kmod-call-fix kernel/kmod.c
--- a/kernel/kmod.c~kmod-avoid-deadlock-by-recursive-kmod-call-fix
+++ a/kernel/kmod.c
@@ -44,6 +44,12 @@
extern int max_threads;
static struct workqueue_struct *khelper_wq;
+
+/*
+ * kmod_thread_locker is used for deadlock avoidance. There is no explicit
+ * locking to protect this global - it is private to the singleton khelper
+ * thread and should only ever be modified by that thread.
+ */
static const struct task_struct *kmod_thread_locker;
#define CAP_BSET (void *)1
_
Subject: Subject: kmod-avoid-deadlock-by-recursive-kmod-call-fix
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
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arch-alpha-kernel-systblss-remove-debug-check.patch
arch-x86-platform-iris-irisc-register-a-platform-device-and-a-platform-driver.patch
x86-olpc-xo15-sci-enable-lid-close-wakeup-control-through-sysfs.patch
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mm.patch
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prctl-add-pr_setget_child_subreaper-to-allow-simple-process-supervision-fix-fix-fix.patch
kernel-exitc-if-init-dies-log-a-signal-which-killed-it-if-any-fix.patch
brlocks-lglocks-cleanups-checkpatch-fixes.patch
crc32-move-long-comment-about-crc32-fundamentals-to-documentation-fix.patch
kmod-avoid-deadlock-by-recursive-kmod-call-fix.patch
notify_change-check-that-i_mutex-is-held.patch
journal_add_journal_head-debug.patch
mutex-subsystem-synchro-test-module-fix.patch
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