These defines and functions will be used in r5cache, so move them
to raid5.h.
Signed-off-by: Song Liu <songliubraving@xxxxxx>
Signed-off-by: Shaohua Li <shli@xxxxxx>
---
drivers/md/raid5.c | 55 ------------------------------------------------------
drivers/md/raid5.h | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+), 55 deletions(-)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 8e25e67..dc24b664 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -70,61 +70,6 @@ module_param(devices_handle_discard_safely, bool, 0644);
MODULE_PARM_DESC(devices_handle_discard_safely,
"Set to Y if all devices in each array reliably return zeroes on reads from discarded regions");
static struct workqueue_struct *raid5_wq;
-/*
- * Stripe cache
- */
-
-#define NR_STRIPES 256
-#define STRIPE_SIZE PAGE_SIZE
-#define STRIPE_SHIFT (PAGE_SHIFT - 9)
-#define STRIPE_SECTORS (STRIPE_SIZE>>9)
-#define IO_THRESHOLD 1
-#define BYPASS_THRESHOLD 1
-#define NR_HASH (PAGE_SIZE / sizeof(struct hlist_head))
-#define HASH_MASK (NR_HASH - 1)
-#define MAX_STRIPE_BATCH 8
-
-static inline struct hlist_head *stripe_hash(struct r5conf *conf, sector_t sect)
-{
- int hash = (sect >> STRIPE_SHIFT) & HASH_MASK;
- return &conf->stripe_hashtbl[hash];
-}
-
-static inline int stripe_hash_locks_hash(sector_t sect)
-{
- return (sect >> STRIPE_SHIFT) & STRIPE_HASH_LOCKS_MASK;
-}
-
-static inline void lock_device_hash_lock(struct r5conf *conf, int hash)
-{
- spin_lock_irq(conf->hash_locks + hash);
- spin_lock(&conf->device_lock);
-}
-
-static inline void unlock_device_hash_lock(struct r5conf *conf, int hash)
-{
- spin_unlock(&conf->device_lock);
- spin_unlock_irq(conf->hash_locks + hash);
-}
-
-static inline void lock_all_device_hash_locks_irq(struct r5conf *conf)
-{
- int i;
- local_irq_disable();
- spin_lock(conf->hash_locks);
- for (i = 1; i < NR_STRIPE_HASH_LOCKS; i++)
- spin_lock_nest_lock(conf->hash_locks + i, conf->hash_locks);
- spin_lock(&conf->device_lock);
-}
-
-static inline void unlock_all_device_hash_locks_irq(struct r5conf *conf)
-{
- int i;
- spin_unlock(&conf->device_lock);
- for (i = NR_STRIPE_HASH_LOCKS; i; i--)
- spin_unlock(conf->hash_locks + i - 1);
- local_irq_enable();
-}
/* bio's attached to a stripe+device for I/O are linked together in bi_sector
* order without overlap. There may be several bio's per stripe+device, and
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index 517d4b6..3b68d4f 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -616,6 +616,61 @@ static inline int algorithm_is_DDF(int layout)
return layout >= 8 && layout <= 10;
}
+/*
+ * Stripe cache
+ */
+#define NR_STRIPES 256
+#define STRIPE_SIZE PAGE_SIZE
+#define STRIPE_SHIFT (PAGE_SHIFT - 9)
+#define STRIPE_SECTORS (STRIPE_SIZE>>9)
+#define IO_THRESHOLD 1
+#define BYPASS_THRESHOLD 1
+#define NR_HASH (PAGE_SIZE / sizeof(struct hlist_head))
+#define HASH_MASK (NR_HASH - 1)
+#define MAX_STRIPE_BATCH 8
+
+static inline struct hlist_head *stripe_hash(struct r5conf *conf, sector_t sect)
+{
+ int hash = (sect >> STRIPE_SHIFT) & HASH_MASK;
+ return &conf->stripe_hashtbl[hash];
+}
+
+static inline int stripe_hash_locks_hash(sector_t sect)
+{
+ return (sect >> STRIPE_SHIFT) & STRIPE_HASH_LOCKS_MASK;
+}
+
+static inline void lock_device_hash_lock(struct r5conf *conf, int hash)
+{
+ spin_lock_irq(conf->hash_locks + hash);
+ spin_lock(&conf->device_lock);
+}
+
+static inline void unlock_device_hash_lock(struct r5conf *conf, int hash)
+{
+ spin_unlock(&conf->device_lock);
+ spin_unlock_irq(conf->hash_locks + hash);
+}
+
+static inline void lock_all_device_hash_locks_irq(struct r5conf *conf)
+{
+ int i;
+ local_irq_disable();
+ spin_lock(conf->hash_locks);
+ for (i = 1; i < NR_STRIPE_HASH_LOCKS; i++)
+ spin_lock_nest_lock(conf->hash_locks + i, conf->hash_locks);
+ spin_lock(&conf->device_lock);
+}
+
+static inline void unlock_all_device_hash_locks_irq(struct r5conf *conf)
+{
+ int i;
+ spin_unlock(&conf->device_lock);
+ for (i = NR_STRIPE_HASH_LOCKS; i; i--)
+ spin_unlock(conf->hash_locks + i - 1);
+ local_irq_enable();
+}
+
extern void md_raid5_kick_device(struct r5conf *conf);
extern int raid5_set_cache_size(struct mddev *mddev, int size);
extern sector_t raid5_compute_blocknr(struct stripe_head *sh, int i, int previous);
--
2.8.0.rc2
--
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