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-rw-r--r--drivers/md/bitmap.c36
-rw-r--r--drivers/md/dm-bio-list.h117
-rw-r--r--drivers/md/dm-delay.c2
-rw-r--r--drivers/md/dm-mpath.c1
-rw-r--r--drivers/md/dm-raid1.c1
-rw-r--r--drivers/md/dm-region-hash.c1
-rw-r--r--drivers/md/dm-snap.c1
-rw-r--r--drivers/md/dm.c1
-rw-r--r--drivers/md/md.c111
-rw-r--r--drivers/md/md.h21
-rw-r--r--drivers/md/raid1.c1
-rw-r--r--drivers/md/raid10.c13
-rw-r--r--drivers/md/raid5.c7
13 files changed, 111 insertions, 202 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index f8a9f7ab2cb8..47c68bc75a17 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -986,6 +986,9 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start)
oldindex = index;
oldpage = page;
+ bitmap->filemap[bitmap->file_pages++] = page;
+ bitmap->last_page_size = count;
+
if (outofdate) {
/*
* if bitmap is out of date, dirty the
@@ -998,15 +1001,9 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start)
write_page(bitmap, page, 1);
ret = -EIO;
- if (bitmap->flags & BITMAP_WRITE_ERROR) {
- /* release, page not in filemap yet */
- put_page(page);
+ if (bitmap->flags & BITMAP_WRITE_ERROR)
goto err;
- }
}
-
- bitmap->filemap[bitmap->file_pages++] = page;
- bitmap->last_page_size = count;
}
paddr = kmap_atomic(page, KM_USER0);
if (bitmap->flags & BITMAP_HOSTENDIAN)
@@ -1016,9 +1013,11 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start)
kunmap_atomic(paddr, KM_USER0);
if (b) {
/* if the disk bit is set, set the memory bit */
- bitmap_set_memory_bits(bitmap, i << CHUNK_BLOCK_SHIFT(bitmap),
- ((i+1) << (CHUNK_BLOCK_SHIFT(bitmap)) >= start)
- );
+ int needed = ((sector_t)(i+1) << (CHUNK_BLOCK_SHIFT(bitmap))
+ >= start);
+ bitmap_set_memory_bits(bitmap,
+ (sector_t)i << CHUNK_BLOCK_SHIFT(bitmap),
+ needed);
bit_cnt++;
set_page_attr(bitmap, page, BITMAP_PAGE_CLEAN);
}
@@ -1154,8 +1153,9 @@ void bitmap_daemon_work(struct bitmap *bitmap)
spin_lock_irqsave(&bitmap->lock, flags);
clear_page_attr(bitmap, page, BITMAP_PAGE_CLEAN);
}
- bmc = bitmap_get_counter(bitmap, j << CHUNK_BLOCK_SHIFT(bitmap),
- &blocks, 0);
+ bmc = bitmap_get_counter(bitmap,
+ (sector_t)j << CHUNK_BLOCK_SHIFT(bitmap),
+ &blocks, 0);
if (bmc) {
/*
if (j < 100) printk("bitmap: j=%lu, *bmc = 0x%x\n", j, *bmc);
@@ -1169,7 +1169,8 @@ void bitmap_daemon_work(struct bitmap *bitmap)
} else if (*bmc == 1) {
/* we can clear the bit */
*bmc = 0;
- bitmap_count_page(bitmap, j << CHUNK_BLOCK_SHIFT(bitmap),
+ bitmap_count_page(bitmap,
+ (sector_t)j << CHUNK_BLOCK_SHIFT(bitmap),
-1);
/* clear the bit */
@@ -1479,6 +1480,7 @@ void bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector)
s += blocks;
}
bitmap->last_end_sync = jiffies;
+ sysfs_notify(&bitmap->mddev->kobj, NULL, "sync_completed");
}
static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset, int needed)
@@ -1513,7 +1515,7 @@ void bitmap_dirty_bits(struct bitmap *bitmap, unsigned long s, unsigned long e)
unsigned long chunk;
for (chunk = s; chunk <= e; chunk++) {
- sector_t sec = chunk << CHUNK_BLOCK_SHIFT(bitmap);
+ sector_t sec = (sector_t)chunk << CHUNK_BLOCK_SHIFT(bitmap);
bitmap_set_memory_bits(bitmap, sec, 1);
bitmap_file_set_bit(bitmap, sec);
}
@@ -1589,7 +1591,7 @@ void bitmap_destroy(mddev_t *mddev)
int bitmap_create(mddev_t *mddev)
{
struct bitmap *bitmap;
- unsigned long blocks = mddev->resync_max_sectors;
+ sector_t blocks = mddev->resync_max_sectors;
unsigned long chunks;
unsigned long pages;
struct file *file = mddev->bitmap_file;
@@ -1631,8 +1633,8 @@ int bitmap_create(mddev_t *mddev)
bitmap->chunkshift = ffz(~bitmap->chunksize);
/* now that chunksize and chunkshift are set, we can use these macros */
- chunks = (blocks + CHUNK_BLOCK_RATIO(bitmap) - 1) /
- CHUNK_BLOCK_RATIO(bitmap);
+ chunks = (blocks + CHUNK_BLOCK_RATIO(bitmap) - 1) >>
+ CHUNK_BLOCK_SHIFT(bitmap);
pages = (chunks + PAGE_COUNTER_RATIO - 1) / PAGE_COUNTER_RATIO;
BUG_ON(!pages);
diff --git a/drivers/md/dm-bio-list.h b/drivers/md/dm-bio-list.h
deleted file mode 100644
index 345098b4ca77..000000000000
--- a/drivers/md/dm-bio-list.h
+++ /dev/null
@@ -1,117 +0,0 @@
-/*
- * Copyright (C) 2004 Red Hat UK Ltd.
- *
- * This file is released under the GPL.
- */
-
-#ifndef DM_BIO_LIST_H
-#define DM_BIO_LIST_H
-
-#include <linux/bio.h>
-
-#ifdef CONFIG_BLOCK
-
-struct bio_list {
- struct bio *head;
- struct bio *tail;
-};
-
-static inline int bio_list_empty(const struct bio_list *bl)
-{
- return bl->head == NULL;
-}
-
-static inline void bio_list_init(struct bio_list *bl)
-{
- bl->head = bl->tail = NULL;
-}
-
-#define bio_list_for_each(bio, bl) \
- for (bio = (bl)->head; bio; bio = bio->bi_next)
-
-static inline unsigned bio_list_size(const struct bio_list *bl)
-{
- unsigned sz = 0;
- struct bio *bio;
-
- bio_list_for_each(bio, bl)
- sz++;
-
- return sz;
-}
-
-static inline void bio_list_add(struct bio_list *bl, struct bio *bio)
-{
- bio->bi_next = NULL;
-
- if (bl->tail)
- bl->tail->bi_next = bio;
- else
- bl->head = bio;
-
- bl->tail = bio;
-}
-
-static inline void bio_list_add_head(struct bio_list *bl, struct bio *bio)
-{
- bio->bi_next = bl->head;
-
- bl->head = bio;
-
- if (!bl->tail)
- bl->tail = bio;
-}
-
-static inline void bio_list_merge(struct bio_list *bl, struct bio_list *bl2)
-{
- if (!bl2->head)
- return;
-
- if (bl->tail)
- bl->tail->bi_next = bl2->head;
- else
- bl->head = bl2->head;
-
- bl->tail = bl2->tail;
-}
-
-static inline void bio_list_merge_head(struct bio_list *bl,
- struct bio_list *bl2)
-{
- if (!bl2->head)
- return;
-
- if (bl->head)
- bl2->tail->bi_next = bl->head;
- else
- bl->tail = bl2->tail;
-
- bl->head = bl2->head;
-}
-
-static inline struct bio *bio_list_pop(struct bio_list *bl)
-{
- struct bio *bio = bl->head;
-
- if (bio) {
- bl->head = bl->head->bi_next;
- if (!bl->head)
- bl->tail = NULL;
-
- bio->bi_next = NULL;
- }
-
- return bio;
-}
-
-static inline struct bio *bio_list_get(struct bio_list *bl)
-{
- struct bio *bio = bl->head;
-
- bl->head = bl->tail = NULL;
-
- return bio;
-}
-
-#endif /* CONFIG_BLOCK */
-#endif
diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c
index 59ee1b015d2d..559dbb52bc85 100644
--- a/drivers/md/dm-delay.c
+++ b/drivers/md/dm-delay.c
@@ -15,8 +15,6 @@
#include <linux/device-mapper.h>
-#include "dm-bio-list.h"
-
#define DM_MSG_PREFIX "delay"
struct delay_c {
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 095f77bf9681..6a386ab4f7eb 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -8,7 +8,6 @@
#include <linux/device-mapper.h>
#include "dm-path-selector.h"
-#include "dm-bio-list.h"
#include "dm-bio-record.h"
#include "dm-uevent.h"
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 536ef0bef154..076fbb4e967a 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -5,7 +5,6 @@
* This file is released under the GPL.
*/
-#include "dm-bio-list.h"
#include "dm-bio-record.h"
#include <linux/init.h>
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index 59f8d9df9e1a..7b899be0b087 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -14,7 +14,6 @@
#include <linux/vmalloc.h>
#include "dm.h"
-#include "dm-bio-list.h"
#define DM_MSG_PREFIX "region hash"
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 981a0413068f..d73f17fc7778 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -22,7 +22,6 @@
#include <linux/workqueue.h>
#include "dm-exception-store.h"
-#include "dm-bio-list.h"
#define DM_MSG_PREFIX "snapshots"
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 8a994be035ba..424f7b048c30 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -6,7 +6,6 @@
*/
#include "dm.h"
-#include "dm-bio-list.h"
#include "dm-uevent.h"
#include <linux/init.h>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index ed5727c089a9..fccc8343a250 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2017,6 +2017,8 @@ repeat:
clear_bit(MD_CHANGE_PENDING, &mddev->flags);
spin_unlock_irq(&mddev->write_lock);
wake_up(&mddev->sb_wait);
+ if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
+ sysfs_notify(&mddev->kobj, NULL, "sync_completed");
}
@@ -2086,6 +2088,7 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len)
* -writemostly - clears write_mostly
* blocked - sets the Blocked flag
* -blocked - clears the Blocked flag
+ * insync - sets Insync providing device isn't active
*/
int err = -EINVAL;
if (cmd_match(buf, "faulty") && rdev->mddev->pers) {
@@ -2118,6 +2121,9 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len)
md_wakeup_thread(rdev->mddev->thread);
err = 0;
+ } else if (cmd_match(buf, "insync") && rdev->raid_disk == -1) {
+ set_bit(In_sync, &rdev->flags);
+ err = 0;
}
if (!err && rdev->sysfs_state)
sysfs_notify_dirent(rdev->sysfs_state);
@@ -2190,7 +2196,7 @@ slot_store(mdk_rdev_t *rdev, const char *buf, size_t len)
} else if (rdev->mddev->pers) {
mdk_rdev_t *rdev2;
/* Activating a spare .. or possibly reactivating
- * if we every get bitmaps working here.
+ * if we ever get bitmaps working here.
*/
if (rdev->raid_disk != -1)
@@ -3060,11 +3066,8 @@ array_state_store(mddev_t *mddev, const char *buf, size_t len)
} else
err = -EBUSY;
spin_unlock_irq(&mddev->write_lock);
- } else {
- mddev->ro = 0;
- mddev->recovery_cp = MaxSector;
- err = do_md_run(mddev);
- }
+ } else
+ err = -EINVAL;
break;
case active:
if (mddev->pers) {
@@ -3482,12 +3485,15 @@ sync_completed_show(mddev_t *mddev, char *page)
{
unsigned long max_sectors, resync;
+ if (!test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
+ return sprintf(page, "none\n");
+
if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery))
max_sectors = mddev->resync_max_sectors;
else
max_sectors = mddev->dev_sectors;
- resync = (mddev->curr_resync - atomic_read(&mddev->recovery_active));
+ resync = mddev->curr_resync_completed;
return sprintf(page, "%lu / %lu\n", resync, max_sectors);
}
@@ -4288,6 +4294,7 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
{
int err = 0;
struct gendisk *disk = mddev->gendisk;
+ mdk_rdev_t *rdev;
if (atomic_read(&mddev->openers) > is_open) {
printk("md: %s still in use.\n",mdname(mddev));
@@ -4330,6 +4337,13 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
/* tell userspace to handle 'inactive' */
sysfs_notify_dirent(mddev->sysfs_state);
+ list_for_each_entry(rdev, &mddev->disks, same_set)
+ if (rdev->raid_disk >= 0) {
+ char nm[20];
+ sprintf(nm, "rd%d", rdev->raid_disk);
+ sysfs_remove_link(&mddev->kobj, nm);
+ }
+
set_capacity(disk, 0);
mddev->changed = 1;
@@ -4350,7 +4364,6 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
* Free resources if final stop
*/
if (mode == 0) {
- mdk_rdev_t *rdev;
printk(KERN_INFO "md: %s stopped.\n", mdname(mddev));
@@ -4362,13 +4375,6 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
}
mddev->bitmap_offset = 0;
- list_for_each_entry(rdev, &mddev->disks, same_set)
- if (rdev->raid_disk >= 0) {
- char nm[20];
- sprintf(nm, "rd%d", rdev->raid_disk);
- sysfs_remove_link(&mddev->kobj, nm);
- }
-
/* make sure all md_delayed_delete calls have finished */
flush_scheduled_work();
@@ -5696,37 +5702,38 @@ static void status_unused(struct seq_file *seq)
static void status_resync(struct seq_file *seq, mddev_t * mddev)
{
- sector_t max_blocks, resync, res;
- unsigned long dt, db, rt;
+ sector_t max_sectors, resync, res;
+ unsigned long dt, db;
+ sector_t rt;
int scale;
unsigned int per_milli;
- resync = (mddev->curr_resync - atomic_read(&mddev->recovery_active))/2;
+ resync = mddev->curr_resync - atomic_read(&mddev->recovery_active);
if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery))
- max_blocks = mddev->resync_max_sectors >> 1;
+ max_sectors = mddev->resync_max_sectors;
else
- max_blocks = mddev->dev_sectors / 2;
+ max_sectors = mddev->dev_sectors;
/*
* Should not happen.
*/
- if (!max_blocks) {
+ if (!max_sectors) {
MD_BUG();
return;
}
/* Pick 'scale' such that (resync>>scale)*1000 will fit
- * in a sector_t, and (max_blocks>>scale) will fit in a
+ * in a sector_t, and (max_sectors>>scale) will fit in a
* u32, as those are the requirements for sector_div.
* Thus 'scale' must be at least 10
*/
scale = 10;
if (sizeof(sector_t) > sizeof(unsigned long)) {
- while ( max_blocks/2 > (1ULL<<(scale+32)))
+ while ( max_sectors/2 > (1ULL<<(scale+32)))
scale++;
}
res = (resync>>scale)*1000;
- sector_div(res, (u32)((max_blocks>>scale)+1));
+ sector_div(res, (u32)((max_sectors>>scale)+1));
per_milli = res;
{
@@ -5747,25 +5754,35 @@ static void status_resync(struct seq_file *seq, mddev_t * mddev)
(test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ?
"resync" : "recovery"))),
per_milli/10, per_milli % 10,
- (unsigned long long) resync,
- (unsigned long long) max_blocks);
+ (unsigned long long) resync/2,
+ (unsigned long long) max_sectors/2);
/*
- * We do not want to overflow, so the order of operands and
- * the * 100 / 100 trick are important. We do a +1 to be
- * safe against division by zero. We only estimate anyway.
- *
* dt: time from mark until now
* db: blocks written from mark until now
* rt: remaining time
+ *
+ * rt is a sector_t, so could be 32bit or 64bit.
+ * So we divide before multiply in case it is 32bit and close
+ * to the limit.
+ * We scale the divisor (db) by 32 to avoid loosing precision
+ * near the end of resync when the number of remaining sectors
+ * is close to 'db'.
+ * We then divide rt by 32 after multiplying by db to compensate.
+ * The '+1' avoids division by zero if db is very small.
*/
dt = ((jiffies - mddev->resync_mark) / HZ);
if (!dt) dt++;
db = (mddev->curr_mark_cnt - atomic_read(&mddev->recovery_active))
- mddev->resync_mark_cnt;
- rt = (dt * ((unsigned long)(max_blocks-resync) / (db/2/100+1)))/100;
- seq_printf(seq, " finish=%lu.%lumin", rt / 60, (rt % 60)/6);
+ rt = max_sectors - resync; /* number of remaining sectors */
+ sector_div(rt, db/32+1);
+ rt *= dt;
+ rt >>= 5;
+
+ seq_printf(seq, " finish=%lu.%lumin", (unsigned long)rt / 60,
+ ((unsigned long)rt % 60)/6);
seq_printf(seq, " speed=%ldK/sec", db/2/dt);
}
@@ -5956,7 +5973,7 @@ static int md_seq_show(struct seq_file *seq, void *v)
return 0;
}
-static struct seq_operations md_seq_ops = {
+static const struct seq_operations md_seq_ops = {
.start = md_seq_start,
.next = md_seq_next,
.stop = md_seq_stop,
@@ -6334,18 +6351,13 @@ void md_do_sync(mddev_t *mddev)
sector_t sectors;
skipped = 0;
- if (j >= mddev->resync_max) {
- sysfs_notify(&mddev->kobj, NULL, "sync_completed");
- wait_event(mddev->recovery_wait,
- mddev->resync_max > j
- || kthread_should_stop());
- }
- if (kthread_should_stop())
- goto interrupted;
- if (mddev->curr_resync > mddev->curr_resync_completed &&
- (mddev->curr_resync - mddev->curr_resync_completed)
- > (max_sectors >> 4)) {
+ if ((mddev->curr_resync > mddev->curr_resync_completed &&
+ (mddev->curr_resync - mddev->curr_resync_completed)
+ > (max_sectors >> 4)) ||
+ (j - mddev->curr_resync_completed)*2
+ >= mddev->resync_max - mddev->curr_resync_completed
+ ) {
/* time to update curr_resync_completed */
blk_unplug(mddev->queue);
wait_event(mddev->recovery_wait,
@@ -6353,7 +6365,17 @@ void md_do_sync(mddev_t *mddev)
mddev->curr_resync_completed =
mddev->curr_resync;
set_bit(MD_CHANGE_CLEAN, &mddev->flags);
+ sysfs_notify(&mddev->kobj, NULL, "sync_completed");
}
+
+ if (j >= mddev->resync_max)
+ wait_event(mddev->recovery_wait,
+ mddev->resync_max > j
+ || kthread_should_stop());
+
+ if (kthread_should_stop())
+ goto interrupted;
+
sectors = mddev->pers->sync_request(mddev, j, &skipped,
currspeed < speed_min(mddev));
if (sectors == 0) {
@@ -6461,6 +6483,7 @@ void md_do_sync(mddev_t *mddev)
skip:
mddev->curr_resync = 0;
+ mddev->curr_resync_completed = 0;
mddev->resync_min = 0;
mddev->resync_max = MaxSector;
sysfs_notify(&mddev->kobj, NULL, "sync_completed");
diff --git a/drivers/md/md.h b/drivers/md/md.h
index e9b7f54c24d6..8227ab909d44 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -12,10 +12,17 @@
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#ifndef _MD_K_H
-#define _MD_K_H
-
-#ifdef CONFIG_BLOCK
+#ifndef _MD_MD_H
+#define _MD_MD_H
+
+#include <linux/blkdev.h>
+#include <linux/kobject.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/mutex.h>
+#include <linux/timer.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
#define MaxSector (~(sector_t)0)
@@ -408,10 +415,6 @@ static inline void safe_put_page(struct page *p)
if (p) put_page(p);
}
-#endif /* CONFIG_BLOCK */
-#endif
-
-
extern int register_md_personality(struct mdk_personality *p);
extern int unregister_md_personality(struct mdk_personality *p);
extern mdk_thread_t * md_register_thread(void (*run) (mddev_t *mddev),
@@ -434,3 +437,5 @@ extern void md_new_event(mddev_t *mddev);
extern int md_allow_write(mddev_t *mddev);
extern void md_wait_for_blocked_rdev(mdk_rdev_t *rdev, mddev_t *mddev);
extern void md_set_array_sectors(mddev_t *mddev, sector_t array_sectors);
+
+#endif /* _MD_MD_H */
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 274b491a11c1..36df9109cde1 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -35,7 +35,6 @@
#include <linux/blkdev.h>
#include <linux/seq_file.h>
#include "md.h"
-#include "dm-bio-list.h"
#include "raid1.h"
#include "bitmap.h"
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index e293d92641ac..499620afb44b 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -22,7 +22,6 @@
#include <linux/blkdev.h>
#include <linux/seq_file.h>
#include "md.h"
-#include "dm-bio-list.h"
#include "raid10.h"
#include "bitmap.h"
@@ -1810,17 +1809,17 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
r10_bio->sector = sect;
raid10_find_phys(conf, r10_bio);
- /* Need to check if this section will still be
+
+ /* Need to check if the array will still be
* degraded
*/
- for (j=0; j<conf->copies;j++) {
- int d = r10_bio->devs[j].devnum;
- if (conf->mirrors[d].rdev == NULL ||
- test_bit(Faulty, &conf->mirrors[d].rdev->flags)) {
+ for (j=0; j<conf->raid_disks; j++)
+ if (conf->mirrors[j].rdev == NULL ||
+ test_bit(Faulty, &conf->mirrors[j].rdev->flags)) {
still_degraded = 1;
break;
}
- }
+
must_sync = bitmap_start_sync(mddev->bitmap, sect,
&sync_blocks, still_degraded);
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 3bbc6d647044..4616bc3a6e71 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -3845,6 +3845,7 @@ static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped
wait_event(conf->wait_for_overlap,
atomic_read(&conf->reshape_stripes)==0);
mddev->reshape_position = conf->reshape_progress;
+ mddev->curr_resync_completed = mddev->curr_resync;
conf->reshape_checkpoint = jiffies;
set_bit(MD_CHANGE_DEVS, &mddev->flags);
md_wakeup_thread(mddev->thread);
@@ -3854,6 +3855,7 @@ static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped
conf->reshape_safe = mddev->reshape_position;
spin_unlock_irq(&conf->device_lock);
wake_up(&conf->wait_for_overlap);
+ sysfs_notify(&mddev->kobj, NULL, "sync_completed");
}
if (mddev->delta_disks < 0) {
@@ -3938,11 +3940,13 @@ static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped
* then we need to write out the superblock.
*/
sector_nr += reshape_sectors;
- if (sector_nr >= mddev->resync_max) {
+ if ((sector_nr - mddev->curr_resync_completed) * 2
+ >= mddev->resync_max - mddev->curr_resync_completed) {
/* Cannot proceed until we've updated the superblock... */
wait_event(conf->wait_for_overlap,
atomic_read(&conf->reshape_stripes) == 0);
mddev->reshape_position = conf->reshape_progress;
+ mddev->curr_resync_completed = mddev->curr_resync;
conf->reshape_checkpoint = jiffies;
set_bit(MD_CHANGE_DEVS, &mddev->flags);
md_wakeup_thread(mddev->thread);
@@ -3953,6 +3957,7 @@ static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped
conf->reshape_safe = mddev->reshape_position;
spin_unlock_irq(&conf->device_lock);
wake_up(&conf->wait_for_overlap);
+ sysfs_notify(&mddev->kobj, NULL, "sync_completed");
}
return reshape_sectors;
}
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