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/md.h | 88 ++++++++++++++++++++++++++++++++++++-------
1 files changed, 73 insertions(+), 15 deletions(-)
diff --git a/kernel/drivers/md/md.h b/kernel/drivers/md/md.h
index cce62bb..c94811c 100644
--- a/kernel/drivers/md/md.h
+++ b/kernel/drivers/md/md.h
@@ -1,15 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
md.h : kernel internal structure of the Linux MD driver
Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- You should have received a copy of the GNU General Public License
- (for example /usr/src/linux/COPYING); if not, write to the Free
- Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _MD_MD_H
@@ -39,6 +32,16 @@
* be retried.
*/
#define MD_FAILFAST (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT)
+
+/*
+ * The struct embedded in rdev is used to serialize IO.
+ */
+struct serial_in_rdev {
+ struct rb_root_cached serial_rb;
+ spinlock_t serial_lock;
+ wait_queue_head_t serial_io_wait;
+};
+
/*
* MD's 'extended' device
*/
@@ -116,11 +119,17 @@
* for reporting to userspace and storing
* in superblock.
*/
+
+ struct serial_in_rdev *serial; /* used for raid1 io serialization */
+
struct work_struct del_work; /* used for delayed sysfs removal */
struct kernfs_node *sysfs_state; /* handle for 'state'
* sysfs entry */
-
+ /* handle for 'unacknowledged_bad_blocks' sysfs dentry */
+ struct kernfs_node *sysfs_unack_badblocks;
+ /* handle for 'bad_blocks' sysfs dentry */
+ struct kernfs_node *sysfs_badblocks;
struct badblocks badblocks;
struct {
@@ -200,6 +209,10 @@
* it didn't fail, so don't use FailFast
* any more for metadata
*/
+ CollisionCheck, /*
+ * check if there is collision between raid1
+ * serial bios.
+ */
};
static inline int is_badblock(struct md_rdev *rdev, sector_t s, int sectors,
@@ -246,6 +259,9 @@
MD_NOT_READY, /* do_md_run() is active, so 'array_state'
* must not report that array is ready yet
*/
+ MD_BROKEN, /* This is used in RAID-0/LINEAR only, to stop
+ * I/O in case an array member is gone/failed.
+ */
};
enum mddev_sb_flags {
@@ -253,6 +269,15 @@
MD_SB_CHANGE_CLEAN, /* transition to or from 'clean' */
MD_SB_CHANGE_PENDING, /* switch from 'clean' to 'active' in progress */
MD_SB_NEED_REWRITE, /* metadata write needs to be repeated */
+};
+
+#define NR_SERIAL_INFOS 8
+/* record current range of serialize IOs */
+struct serial_info {
+ struct rb_node node;
+ sector_t start; /* start sector of rb node */
+ sector_t last; /* end sector of rb node */
+ sector_t _subtree_last; /* highest sector in subtree of rb node */
};
struct mddev {
@@ -372,7 +397,7 @@
* These locks are separate due to conflicting interactions
* with bdev->bd_mutex.
* Lock ordering is:
- * reconfig_mutex -> bd_mutex : e.g. do_md_run -> revalidate_disk
+ * reconfig_mutex -> bd_mutex
* bd_mutex -> open_mutex: e.g. __blkdev_get -> md_open
*/
struct mutex open_mutex;
@@ -398,6 +423,9 @@
* file in sysfs.
*/
struct kernfs_node *sysfs_action; /* handle for 'sync_action' */
+ struct kernfs_node *sysfs_completed; /*handle for 'sync_completed' */
+ struct kernfs_node *sysfs_degraded; /*handle for 'degraded' */
+ struct kernfs_node *sysfs_level; /*handle for 'level' */
struct work_struct del_work; /* used for delayed sysfs removal */
@@ -471,11 +499,15 @@
*/
struct work_struct flush_work;
struct work_struct event_work; /* used by dm to report failure event */
+ mempool_t *serial_info_pool;
void (*sync_super)(struct mddev *mddev, struct md_rdev *rdev);
struct md_cluster_info *cluster_info;
unsigned int good_device_nr; /* good device num within cluster raid */
+ unsigned int noio_flag; /* for memalloc scope API */
bool has_superblocks:1;
+ bool fail_last_dev:1;
+ bool serialize_policy:1;
};
enum recovery_flags {
@@ -518,7 +550,7 @@
static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors)
{
- atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
+ atomic_add(nr_sectors, &bdev->bd_disk->sync_io);
}
static inline void md_sync_acct_bio(struct bio *bio, unsigned long nr_sectors)
@@ -555,6 +587,7 @@
int (*check_reshape) (struct mddev *mddev);
int (*start_reshape) (struct mddev *mddev);
void (*finish_reshape) (struct mddev *mddev);
+ void (*update_reshape_pos) (struct mddev *mddev);
/* quiesce suspends or resumes internal processing.
* 1 - stop new actions and wait for action io to complete
* 0 - return to normal behaviour
@@ -570,9 +603,6 @@
* array.
*/
void *(*takeover) (struct mddev *mddev);
- /* congested implements bdi.congested_fn().
- * Will not be called while array is 'suspended' */
- int (*congested)(struct mddev *mddev, int bits);
/* Changes the consistency policy of an active array. */
int (*change_consistency_policy)(struct mddev *mddev, const char *buf);
};
@@ -683,7 +713,6 @@
extern void md_error(struct mddev *mddev, struct md_rdev *rdev);
extern void md_finish_reshape(struct mddev *mddev);
-extern int mddev_congested(struct mddev *mddev, int bits);
extern bool __must_check md_flush_request(struct mddev *mddev, struct bio *bio);
extern void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
sector_t sector, int size, struct page *page);
@@ -718,8 +747,25 @@
extern void md_reload_sb(struct mddev *mddev, int raid_disk);
extern void md_update_sb(struct mddev *mddev, int force);
extern void md_kick_rdev_from_array(struct md_rdev * rdev);
+extern void mddev_create_serial_pool(struct mddev *mddev, struct md_rdev *rdev,
+ bool is_suspend);
+extern void mddev_destroy_serial_pool(struct mddev *mddev, struct md_rdev *rdev,
+ bool is_suspend);
struct md_rdev *md_find_rdev_nr_rcu(struct mddev *mddev, int nr);
struct md_rdev *md_find_rdev_rcu(struct mddev *mddev, dev_t dev);
+
+static inline bool is_mddev_broken(struct md_rdev *rdev, const char *md_type)
+{
+ int flags = rdev->bdev->bd_disk->flags;
+
+ if (!(flags & GENHD_FL_UP)) {
+ if (!test_and_set_bit(MD_BROKEN, &rdev->mddev->flags))
+ pr_warn("md: %s: %s array has a missing/failed member\n",
+ mdname(rdev->mddev), md_type);
+ return true;
+ }
+ return false;
+}
static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)
{
@@ -756,4 +802,16 @@
!bio->bi_disk->queue->limits.max_write_zeroes_sectors)
mddev->queue->limits.max_write_zeroes_sectors = 0;
}
+
+struct mdu_array_info_s;
+struct mdu_disk_info_s;
+
+extern int mdp_major;
+void md_autostart_arrays(int part);
+int md_set_array_info(struct mddev *mddev, struct mdu_array_info_s *info);
+int md_add_new_disk(struct mddev *mddev, struct mdu_disk_info_s *info);
+int do_md_run(struct mddev *mddev);
+
+extern const struct block_device_operations md_fops;
+
#endif /* _MD_MD_H */
--
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