1 files changed, 43 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.24/0002-raid5-delayed-stripe-fix.patch b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.24/0002-raid5-delayed-stripe-fix.patch
new file mode 100644
index 00000000..bb9ebfa1
--- /dev/null
+++ b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.24/0002-raid5-delayed-stripe-fix.patch
@@ -0,0 +1,43 @@
+From c3041d04e675a5d38a1d57fee3c59d4f073f512e Mon Sep 17 00:00:00 2001
+From: Shaohua Li <shli@kernel.org>
+Date: Tue, 3 Jul 2012 15:57:19 +1000
+Subject: [PATCH 002/109] raid5: delayed stripe fix
+
+commit fab363b5ff502d1b39ddcfec04271f5858d9f26e upstream.
+
+There isn't locking setting STRIPE_DELAYED and STRIPE_PREREAD_ACTIVE bits, but
+the two bits have relationship. A delayed stripe can be moved to hold list only
+when preread active stripe count is below IO_THRESHOLD. If a stripe has both
+the bits set, such stripe will be in delayed list and preread count not 0,
+which will make such stripe never leave delayed list.
+
+Signed-off-by: Shaohua Li <shli@fusionio.com>
+Signed-off-by: NeilBrown <neilb@suse.de>
+Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
+---
+ drivers/md/raid5.c |    4 +++-
+ 1 files changed, 3 insertions(+), 1 deletions(-)
+
+diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
+index 6ba4954..26ef63a 100644
+--- a/drivers/md/raid5.c
++++ b/drivers/md/raid5.c
+@@ -196,12 +196,14 @@ static void __release_stripe(struct r5conf *conf, struct stripe_head *sh)
+                BUG_ON(!list_empty(&sh->lru));
+                BUG_ON(atomic_read(&conf->active_stripes)==0);
+                if (test_bit(STRIPE_HANDLE, &sh->state)) {
+-                       if (test_bit(STRIPE_DELAYED, &sh->state))
++                       if (test_bit(STRIPE_DELAYED, &sh->state) &&
++                           !test_bit(STRIPE_PREREAD_ACTIVE, &sh->state))
+                                list_add_tail(&sh->lru, &conf->delayed_list);
+                        else if (test_bit(STRIPE_BIT_DELAY, &sh->state) &&
+                                   sh->bm_seq - conf->seq_write > 0)
+                                list_add_tail(&sh->lru, &conf->bitmap_list);
+                        else {
++                               clear_bit(STRIPE_DELAYED, &sh->state);
+                                clear_bit(STRIPE_BIT_DELAY, &sh->state);
+                                list_add_tail(&sh->lru, &conf->handle_list);
+                        }
+-- 
+1.7.7.6
+