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Diffstat (limited to 'drivers/md/md.h')
-rw-r--r--drivers/md/md.h66
1 files changed, 28 insertions, 38 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index af443ab868d..a49d991f3fe 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -106,7 +106,7 @@ struct md_rdev {
*/
struct work_struct del_work; /* used for delayed sysfs removal */
- struct sysfs_dirent *sysfs_state; /* handle for 'state'
+ struct kernfs_node *sysfs_state; /* handle for 'state'
* sysfs entry */
struct badblocks {
@@ -129,6 +129,9 @@ struct md_rdev {
enum flag_bits {
Faulty, /* device is known to have a fault */
In_sync, /* device is in_sync with rest of array */
+ Bitmap_sync, /* ..actually, not quite In_sync. Need a
+ * bitmap-based recovery to get fully in sync
+ */
Unmerged, /* device is being added to array and should
* be considerred for bvec_merge_fn but not
* yet for actual IO
@@ -204,12 +207,16 @@ struct mddev {
struct md_personality *pers;
dev_t unit;
int md_minor;
- struct list_head disks;
+ struct list_head disks;
unsigned long flags;
#define MD_CHANGE_DEVS 0 /* Some device status has changed */
#define MD_CHANGE_CLEAN 1 /* transition to or from 'clean' */
#define MD_CHANGE_PENDING 2 /* switch from 'clean' to 'active' in progress */
+#define MD_UPDATE_SB_FLAGS (1 | 2 | 4) /* If these are set, md_update_sb needed */
#define MD_ARRAY_FIRST_USE 3 /* First use of array, needs initialization */
+#define MD_STILL_CLOSED 4 /* If set, then array has not been opened since
+ * md_ioctl checked on it.
+ */
int suspended;
atomic_t active_io;
@@ -218,7 +225,7 @@ struct mddev {
* are happening, so run/
* takeover/stop are not safe
*/
- int ready; /* See when safe to pass
+ int ready; /* See when safe to pass
* IO requests down */
struct gendisk *gendisk;
@@ -268,6 +275,14 @@ struct mddev {
struct md_thread *thread; /* management thread */
struct md_thread *sync_thread; /* doing resync or reconstruct */
+
+ /* 'last_sync_action' is initialized to "none". It is set when a
+ * sync operation (i.e "data-check", "requested-resync", "resync",
+ * "recovery", or "reshape") is started. It holds this value even
+ * when the sync thread is "frozen" (interrupted) or "idle" (stopped
+ * or finished). It is overwritten when a new sync operation is begun.
+ */
+ char *last_sync_action;
sector_t curr_resync; /* last block scheduled */
/* As resync requests can complete out of order, we cannot easily track
* how much resync has been completed. So we occasionally pause until
@@ -307,6 +322,7 @@ struct mddev {
* REQUEST: user-space has requested a sync (used with SYNC)
* CHECK: user-space request for check-only, no repair
* RESHAPE: A reshape is happening
+ * ERROR: sync-action interrupted because io-error
*
* If neither SYNC or RESHAPE are set, then it is a recovery.
*/
@@ -320,6 +336,7 @@ struct mddev {
#define MD_RECOVERY_CHECK 7
#define MD_RECOVERY_RESHAPE 8
#define MD_RECOVERY_FROZEN 9
+#define MD_RECOVERY_ERROR 10
unsigned long recovery;
/* If a RAID personality determines that recovery (of a particular
@@ -362,10 +379,10 @@ struct mddev {
sector_t resync_max; /* resync should pause
* when it gets here */
- struct sysfs_dirent *sysfs_state; /* handle for 'array_state'
+ struct kernfs_node *sysfs_state; /* handle for 'array_state'
* file in sysfs.
*/
- struct sysfs_dirent *sysfs_action; /* handle for 'sync_action' */
+ struct kernfs_node *sysfs_action; /* handle for 'sync_action' */
struct work_struct del_work; /* used for delayed sysfs removal */
@@ -484,13 +501,13 @@ struct md_sysfs_entry {
};
extern struct attribute_group md_bitmap_group;
-static inline struct sysfs_dirent *sysfs_get_dirent_safe(struct sysfs_dirent *sd, char *name)
+static inline struct kernfs_node *sysfs_get_dirent_safe(struct kernfs_node *sd, char *name)
{
if (sd)
- return sysfs_get_dirent(sd, NULL, name);
+ return sysfs_get_dirent(sd, name);
return sd;
}
-static inline void sysfs_notify_dirent_safe(struct sysfs_dirent *sd)
+static inline void sysfs_notify_dirent_safe(struct kernfs_node *sd)
{
if (sd)
sysfs_notify_dirent(sd);
@@ -504,7 +521,7 @@ static inline char * mdname (struct mddev * mddev)
static inline int sysfs_link_rdev(struct mddev *mddev, struct md_rdev *rdev)
{
char nm[20];
- if (!test_bit(Replacement, &rdev->flags)) {
+ if (!test_bit(Replacement, &rdev->flags) && mddev->kobj.sd) {
sprintf(nm, "rd%d", rdev->raid_disk);
return sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
} else
@@ -514,7 +531,7 @@ static inline int sysfs_link_rdev(struct mddev *mddev, struct md_rdev *rdev)
static inline void sysfs_unlink_rdev(struct mddev *mddev, struct md_rdev *rdev)
{
char nm[20];
- if (!test_bit(Replacement, &rdev->flags)) {
+ if (!test_bit(Replacement, &rdev->flags) && mddev->kobj.sd) {
sprintf(nm, "rd%d", rdev->raid_disk);
sysfs_remove_link(&mddev->kobj, nm);
}
@@ -551,32 +568,6 @@ struct md_thread {
#define THREAD_WAKEUP 0
-#define __wait_event_lock_irq(wq, condition, lock, cmd) \
-do { \
- wait_queue_t __wait; \
- init_waitqueue_entry(&__wait, current); \
- \
- add_wait_queue(&wq, &__wait); \
- for (;;) { \
- set_current_state(TASK_UNINTERRUPTIBLE); \
- if (condition) \
- break; \
- spin_unlock_irq(&lock); \
- cmd; \
- schedule(); \
- spin_lock_irq(&lock); \
- } \
- current->state = TASK_RUNNING; \
- remove_wait_queue(&wq, &__wait); \
-} while (0)
-
-#define wait_event_lock_irq(wq, condition, lock, cmd) \
-do { \
- if (condition) \
- break; \
- __wait_event_lock_irq(wq, condition, lock, cmd); \
-} while (0)
-
static inline void safe_put_page(struct page *p)
{
if (p) put_page(p);
@@ -591,6 +582,7 @@ extern struct md_thread *md_register_thread(
extern void md_unregister_thread(struct md_thread **threadp);
extern void md_wakeup_thread(struct md_thread *thread);
extern void md_check_recovery(struct mddev *mddev);
+extern void md_reap_sync_thread(struct mddev *mddev);
extern void md_write_start(struct mddev *mddev, struct bio *bi);
extern void md_write_end(struct mddev *mddev);
extern void md_done_sync(struct mddev *mddev, int blocks, int ok);
@@ -613,7 +605,6 @@ extern int md_check_no_bitmap(struct mddev *mddev);
extern int md_integrity_register(struct mddev *mddev);
extern void md_integrity_add_rdev(struct md_rdev *rdev, struct mddev *mddev);
extern int strict_strtoul_scaled(const char *cp, unsigned long *res, int scale);
-extern void restore_bitmap_write_access(struct file *file);
extern void mddev_init(struct mddev *mddev);
extern int md_run(struct mddev *mddev);
@@ -628,7 +619,6 @@ extern struct bio *bio_clone_mddev(struct bio *bio, gfp_t gfp_mask,
struct mddev *mddev);
extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs,
struct mddev *mddev);
-extern void md_trim_bio(struct bio *bio, int offset, int size);
extern void md_unplug(struct blk_plug_cb *cb, bool from_schedule);
static inline int mddev_check_plugged(struct mddev *mddev)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 19:22:58 +0000