The patch titled
vt: bitlock fix
has been removed from the -mm tree. Its filename was
vt-bitlock-fix.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: vt: bitlock fix
From: Nick Piggin <npiggin@xxxxxxx>
vt is missing a memory barrier to close the critical section. Use a real
spinlock for this.
Signed-off-by: Nick Piggin <npiggin@xxxxxxx>
Cc: "Antonino A. Daplas" <adaplas@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/vt.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff -puN drivers/char/vt.c~vt-bitlock-fix drivers/char/vt.c
--- a/drivers/char/vt.c~vt-bitlock-fix
+++ a/drivers/char/vt.c
@@ -2400,13 +2400,15 @@ static void vt_console_print(struct cons
{
struct vc_data *vc = vc_cons[fg_console].d;
unsigned char c;
- static unsigned long printing;
+ static DEFINE_SPINLOCK(printing_lock);
const ushort *start;
ushort cnt = 0;
ushort myx;
/* console busy or not yet initialized */
- if (!printable || test_and_set_bit(0, &printing))
+ if (!printable)
+ return;
+ if (!spin_trylock(&printing_lock))
return;
if (kmsg_redirect && vc_cons_allocated(kmsg_redirect - 1))
@@ -2481,7 +2483,7 @@ static void vt_console_print(struct cons
notify_update(vc);
quit:
- clear_bit(0, &printing);
+ spin_unlock(&printing_lock);
}
static struct tty_driver *vt_console_device(struct console *c, int *index)
_
Patches currently in -mm which might be from npiggin@xxxxxxx are
origin.patch
drm-convert-from-nopage-to-fault.patch
git-kvm.patch
nfs-use-gfp_nofs-preloads-for-radix-tree-insertion.patch
sg-nopage.patch
mm-special-mapping-nopage.patch
rewrite-rd.patch
rewrite-rd-fix.patch
rewrite-rd-fix-2.patch
rd-support-xip.patch
mm-remove-nopage.patch
buffer_head-fix-private_list-handling.patch
reiser4.patch
reiser4-correct-references-to-filemap_nopage.patch
-
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