diff options
Diffstat (limited to 'debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch')
| -rw-r--r-- | debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch b/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch index 766c365d4..bb5a04164 100644 --- a/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch +++ b/debian/patches-rt/md-raid5-percpu-handling-rt-aware.patch @@ -1,7 +1,7 @@ From: Thomas Gleixner <tglx@linutronix.de> Date: Tue, 6 Apr 2010 16:51:31 +0200 Subject: md: raid5: Make raid5_percpu handling RT aware -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.0/older/patches-5.0.10-rt7.tar.xz +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.2/older/patches-5.2-rt1.tar.xz __raid_run_ops() disables preemption with get_cpu() around the access to the raid5_percpu variables. That causes scheduling while atomic @@ -21,7 +21,7 @@ Tested-by: Udo van den Heuvel <udovdh@xs4all.nl> --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c -@@ -2069,8 +2069,9 @@ static void raid_run_ops(struct stripe_h +@@ -2058,8 +2058,9 @@ static void raid_run_ops(struct stripe_h struct raid5_percpu *percpu; unsigned long cpu; @@ -32,7 +32,7 @@ Tested-by: Udo van den Heuvel <udovdh@xs4all.nl> if (test_bit(STRIPE_OP_BIOFILL, &ops_request)) { ops_run_biofill(sh); overlap_clear++; -@@ -2129,7 +2130,8 @@ static void raid_run_ops(struct stripe_h +@@ -2118,7 +2119,8 @@ static void raid_run_ops(struct stripe_h if (test_and_clear_bit(R5_Overlap, &dev->flags)) wake_up(&sh->raid_conf->wait_for_overlap); } @@ -42,7 +42,7 @@ Tested-by: Udo van den Heuvel <udovdh@xs4all.nl> } static void free_stripe(struct kmem_cache *sc, struct stripe_head *sh) -@@ -6815,6 +6817,7 @@ static int raid456_cpu_up_prepare(unsign +@@ -6813,6 +6815,7 @@ static int raid456_cpu_up_prepare(unsign __func__, cpu); return -ENOMEM; } @@ -58,5 +58,5 @@ Tested-by: Udo van den Heuvel <udovdh@xs4all.nl> struct raid5_percpu { + spinlock_t lock; /* Protection for -RT */ struct page *spare_page; /* Used when checking P/Q in raid6 */ - struct flex_array *scribble; /* space for constructing buffer - * lists and performing address + void *scribble; /* space for constructing buffer + * lists and performing address |