From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/md/raid5.h | 95 ++++++++++++++++++++++++++++++++++-------------
1 files changed, 69 insertions(+), 26 deletions(-)
diff --git a/kernel/drivers/md/raid5.h b/kernel/drivers/md/raid5.h
index a3bf907..5c05acf 100644
--- a/kernel/drivers/md/raid5.h
+++ b/kernel/drivers/md/raid5.h
@@ -195,6 +195,7 @@
reconstruct_state_result,
};
+#define DEFAULT_STRIPE_SIZE 4096
struct stripe_head {
struct hlist_node hash;
struct list_head lru; /* inactive_list or handle_list */
@@ -246,6 +247,13 @@
int target, target2;
enum sum_check_flags zero_sum_result;
} ops;
+
+#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
+ /* These pages will be used by bios in dev[i] */
+ struct page **pages;
+ int nr_pages; /* page array size */
+ int stripes_per_page;
+#endif
struct r5dev {
/* rreq and rvec are used for the replacement device when
* writing data to both devices.
@@ -253,6 +261,7 @@
struct bio req, rreq;
struct bio_vec vec, rvec;
struct page *page, *orig_page;
+ unsigned int offset; /* offset of the page */
struct bio *toread, *read, *towrite, *written;
sector_t sector; /* sector of this page */
unsigned long flags;
@@ -357,7 +366,6 @@
STRIPE_FULL_WRITE, /* all blocks are set to be overwritten */
STRIPE_BIOFILL_RUN,
STRIPE_COMPUTE_RUN,
- STRIPE_OPS_REQ_PENDING,
STRIPE_ON_UNPLUG_LIST,
STRIPE_DISCARD,
STRIPE_ON_RELEASE_LIST,
@@ -473,33 +481,18 @@
*/
#define NR_STRIPES 256
+
+#if PAGE_SIZE == DEFAULT_STRIPE_SIZE
#define STRIPE_SIZE PAGE_SIZE
#define STRIPE_SHIFT (PAGE_SHIFT - 9)
#define STRIPE_SECTORS (STRIPE_SIZE>>9)
+#endif
+
#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
-
-/* 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
- * a bio could span several devices.
- * When walking this list for a particular stripe+device, we must never proceed
- * beyond a bio that extends past this device, as the next bio might no longer
- * be valid.
- * This function is used to determine the 'next' bio in the list, given the
- * sector of the current stripe+device
- */
-static inline struct bio *r5_next_bio(struct bio *bio, sector_t sector)
-{
- int sectors = bio_sectors(bio);
-
- if (bio->bi_iter.bi_sector + sectors < sector + STRIPE_SECTORS)
- return bio->bi_next;
- else
- return NULL;
-}
/* NOTE NR_STRIPE_HASH_LOCKS must remain below 64.
* This is because we sometimes take all the spinlocks
@@ -577,6 +570,11 @@
int raid_disks;
int max_nr_stripes;
int min_nr_stripes;
+#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
+ unsigned long stripe_size;
+ unsigned int stripe_shift;
+ unsigned long stripe_sectors;
+#endif
/* reshape_progress is the leading edge of a 'reshape'
* It has value MaxSector when no reshape is happening
@@ -592,7 +590,7 @@
int prev_chunk_sectors;
int prev_algo;
short generation; /* increments with every reshape */
- seqcount_t gen_lock; /* lock against generation changes */
+ seqcount_spinlock_t gen_lock; /* lock against generation changes */
unsigned long reshape_checkpoint; /* Time we last updated
* metadata */
long long min_offset_diff; /* minimum difference between
@@ -637,12 +635,12 @@
int recovery_disabled;
/* per cpu variables */
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
- * conversions
- */
+ void *scribble; /* space for constructing buffer
+ * lists and performing address
+ * conversions
+ */
+ int scribble_obj_size;
} __percpu *percpu;
int scribble_disks;
int scribble_sectors;
@@ -693,6 +691,32 @@
struct r5pending_data *next_pending_data;
};
+#if PAGE_SIZE == DEFAULT_STRIPE_SIZE
+#define RAID5_STRIPE_SIZE(conf) STRIPE_SIZE
+#define RAID5_STRIPE_SHIFT(conf) STRIPE_SHIFT
+#define RAID5_STRIPE_SECTORS(conf) STRIPE_SECTORS
+#else
+#define RAID5_STRIPE_SIZE(conf) ((conf)->stripe_size)
+#define RAID5_STRIPE_SHIFT(conf) ((conf)->stripe_shift)
+#define RAID5_STRIPE_SECTORS(conf) ((conf)->stripe_sectors)
+#endif
+
+/* 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
+ * a bio could span several devices.
+ * When walking this list for a particular stripe+device, we must never proceed
+ * beyond a bio that extends past this device, as the next bio might no longer
+ * be valid.
+ * This function is used to determine the 'next' bio in the list, given the
+ * sector of the current stripe+device
+ */
+static inline struct bio *r5_next_bio(struct r5conf *conf, struct bio *bio, sector_t sector)
+{
+ if (bio_end_sector(bio) < sector + RAID5_STRIPE_SECTORS(conf))
+ return bio->bi_next;
+ else
+ return NULL;
+}
/*
* Our supported algorithms
@@ -755,6 +779,25 @@
return layout >= 8 && layout <= 10;
}
+#if PAGE_SIZE != DEFAULT_STRIPE_SIZE
+/*
+ * Return offset of the corresponding page for r5dev.
+ */
+static inline int raid5_get_page_offset(struct stripe_head *sh, int disk_idx)
+{
+ return (disk_idx % sh->stripes_per_page) * RAID5_STRIPE_SIZE(sh->raid_conf);
+}
+
+/*
+ * Return corresponding page address for r5dev.
+ */
+static inline struct page *
+raid5_get_dev_page(struct stripe_head *sh, int disk_idx)
+{
+ return sh->pages[disk_idx / sh->stripes_per_page];
+}
+#endif
+
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);
--
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