summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/md/raid10.c228
1 files changed, 120 insertions, 108 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index f44a3da5a80d..6e846688962f 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1736,7 +1736,8 @@ static int init_resync(conf_t *conf)
*
*/
-static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, int go_faster)
+static sector_t sync_request(mddev_t *mddev, sector_t sector_nr,
+ int *skipped, int go_faster)
{
conf_t *conf = mddev->private;
r10bio_t *r10_bio;
@@ -1830,108 +1831,114 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
int j, k;
r10_bio = NULL;
- for (i=0 ; i<conf->raid_disks; i++)
- if (conf->mirrors[i].rdev &&
- !test_bit(In_sync, &conf->mirrors[i].rdev->flags)) {
- int still_degraded = 0;
- /* want to reconstruct this device */
- r10bio_t *rb2 = r10_bio;
- sector_t sect = raid10_find_virt(conf, sector_nr, i);
- int must_sync;
- /* Unless we are doing a full sync, we only need
- * to recover the block if it is set in the bitmap
- */
- must_sync = bitmap_start_sync(mddev->bitmap, sect,
- &sync_blocks, 1);
- if (sync_blocks < max_sync)
- max_sync = sync_blocks;
- if (!must_sync &&
- !conf->fullsync) {
- /* yep, skip the sync_blocks here, but don't assume
- * that there will never be anything to do here
- */
- chunks_skipped = -1;
- continue;
- }
+ for (i=0 ; i<conf->raid_disks; i++) {
+ int still_degraded;
+ r10bio_t *rb2;
+ sector_t sect;
+ int must_sync;
- r10_bio = mempool_alloc(conf->r10buf_pool, GFP_NOIO);
- raise_barrier(conf, rb2 != NULL);
- atomic_set(&r10_bio->remaining, 0);
+ if (conf->mirrors[i].rdev == NULL ||
+ test_bit(In_sync, &conf->mirrors[i].rdev->flags))
+ continue;
- r10_bio->master_bio = (struct bio*)rb2;
- if (rb2)
- atomic_inc(&rb2->remaining);
- r10_bio->mddev = mddev;
- set_bit(R10BIO_IsRecover, &r10_bio->state);
- r10_bio->sector = sect;
+ still_degraded = 0;
+ /* want to reconstruct this device */
+ rb2 = r10_bio;
+ sect = raid10_find_virt(conf, sector_nr, i);
+ /* Unless we are doing a full sync, we only need
+ * to recover the block if it is set in the bitmap
+ */
+ must_sync = bitmap_start_sync(mddev->bitmap, sect,
+ &sync_blocks, 1);
+ if (sync_blocks < max_sync)
+ max_sync = sync_blocks;
+ if (!must_sync &&
+ !conf->fullsync) {
+ /* yep, skip the sync_blocks here, but don't assume
+ * that there will never be anything to do here
+ */
+ chunks_skipped = -1;
+ continue;
+ }
- raid10_find_phys(conf, r10_bio);
+ r10_bio = mempool_alloc(conf->r10buf_pool, GFP_NOIO);
+ raise_barrier(conf, rb2 != NULL);
+ atomic_set(&r10_bio->remaining, 0);
- /* Need to check if the array will still be
- * degraded
- */
- 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);
-
- for (j=0; j<conf->copies;j++) {
- int d = r10_bio->devs[j].devnum;
- if (conf->mirrors[d].rdev &&
- test_bit(In_sync, &conf->mirrors[d].rdev->flags)) {
- /* This is where we read from */
- bio = r10_bio->devs[0].bio;
- bio->bi_next = biolist;
- biolist = bio;
- bio->bi_private = r10_bio;
- bio->bi_end_io = end_sync_read;
- bio->bi_rw = READ;
- bio->bi_sector = r10_bio->devs[j].addr +
- conf->mirrors[d].rdev->data_offset;
- bio->bi_bdev = conf->mirrors[d].rdev->bdev;
- atomic_inc(&conf->mirrors[d].rdev->nr_pending);
- atomic_inc(&r10_bio->remaining);
- /* and we write to 'i' */
-
- for (k=0; k<conf->copies; k++)
- if (r10_bio->devs[k].devnum == i)
- break;
- BUG_ON(k == conf->copies);
- bio = r10_bio->devs[1].bio;
- bio->bi_next = biolist;
- biolist = bio;
- bio->bi_private = r10_bio;
- bio->bi_end_io = end_sync_write;
- bio->bi_rw = WRITE;
- bio->bi_sector = r10_bio->devs[k].addr +
- conf->mirrors[i].rdev->data_offset;
- bio->bi_bdev = conf->mirrors[i].rdev->bdev;
-
- r10_bio->devs[0].devnum = d;
- r10_bio->devs[1].devnum = i;
+ r10_bio->master_bio = (struct bio*)rb2;
+ if (rb2)
+ atomic_inc(&rb2->remaining);
+ r10_bio->mddev = mddev;
+ set_bit(R10BIO_IsRecover, &r10_bio->state);
+ r10_bio->sector = sect;
- break;
- }
- }
- if (j == conf->copies) {
- /* Cannot recover, so abort the recovery */
- put_buf(r10_bio);
- if (rb2)
- atomic_dec(&rb2->remaining);
- r10_bio = rb2;
- if (!test_and_set_bit(MD_RECOVERY_INTR,
- &mddev->recovery))
- printk(KERN_INFO "md/raid10:%s: insufficient "
- "working devices for recovery.\n",
- mdname(mddev));
+ raid10_find_phys(conf, r10_bio);
+
+ /* Need to check if the array will still be
+ * degraded
+ */
+ 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);
+
+ for (j=0; j<conf->copies;j++) {
+ int d = r10_bio->devs[j].devnum;
+ if (!conf->mirrors[d].rdev ||
+ !test_bit(In_sync, &conf->mirrors[d].rdev->flags))
+ continue;
+ /* This is where we read from */
+ bio = r10_bio->devs[0].bio;
+ bio->bi_next = biolist;
+ biolist = bio;
+ bio->bi_private = r10_bio;
+ bio->bi_end_io = end_sync_read;
+ bio->bi_rw = READ;
+ bio->bi_sector = r10_bio->devs[j].addr +
+ conf->mirrors[d].rdev->data_offset;
+ bio->bi_bdev = conf->mirrors[d].rdev->bdev;
+ atomic_inc(&conf->mirrors[d].rdev->nr_pending);
+ atomic_inc(&r10_bio->remaining);
+ /* and we write to 'i' */
+
+ for (k=0; k<conf->copies; k++)
+ if (r10_bio->devs[k].devnum == i)
+ break;
+ BUG_ON(k == conf->copies);
+ bio = r10_bio->devs[1].bio;
+ bio->bi_next = biolist;
+ biolist = bio;
+ bio->bi_private = r10_bio;
+ bio->bi_end_io = end_sync_write;
+ bio->bi_rw = WRITE;
+ bio->bi_sector = r10_bio->devs[k].addr +
+ conf->mirrors[i].rdev->data_offset;
+ bio->bi_bdev = conf->mirrors[i].rdev->bdev;
+
+ r10_bio->devs[0].devnum = d;
+ r10_bio->devs[1].devnum = i;
+
+ break;
+ }
+ if (j == conf->copies) {
+ /* Cannot recover, so abort the recovery */
+ put_buf(r10_bio);
+ if (rb2)
+ atomic_dec(&rb2->remaining);
+ r10_bio = rb2;
+ if (!test_and_set_bit(MD_RECOVERY_INTR,
+ &mddev->recovery))
+ printk(KERN_INFO "md/raid10:%s: insufficient "
+ "working devices for recovery.\n",
+ mdname(mddev));
+ break;
}
+ }
if (biolist == NULL) {
while (r10_bio) {
r10bio_t *rb2 = r10_bio;
@@ -1949,7 +1956,8 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
if (!bitmap_start_sync(mddev->bitmap, sector_nr,
&sync_blocks, mddev->degraded) &&
- !conf->fullsync && !test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) {
+ !conf->fullsync && !test_bit(MD_RECOVERY_REQUESTED,
+ &mddev->recovery)) {
/* We can skip this block */
*skipped = 1;
return sync_blocks + sectors_skipped;
@@ -1994,7 +2002,8 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
for (i=0; i<conf->copies; i++) {
int d = r10_bio->devs[i].devnum;
if (r10_bio->devs[i].bio->bi_end_io)
- rdev_dec_pending(conf->mirrors[d].rdev, mddev);
+ rdev_dec_pending(conf->mirrors[d].rdev,
+ mddev);
}
put_buf(r10_bio);
biolist = NULL;
@@ -2024,19 +2033,22 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
if (len == 0)
break;
for (bio= biolist ; bio ; bio=bio->bi_next) {
+ struct bio *bio2;
page = bio->bi_io_vec[bio->bi_vcnt].bv_page;
- if (bio_add_page(bio, page, len, 0) == 0) {
- /* stop here */
- struct bio *bio2;
- bio->bi_io_vec[bio->bi_vcnt].bv_page = page;
- for (bio2 = biolist; bio2 && bio2 != bio; bio2 = bio2->bi_next) {
- /* remove last page from this bio */
- bio2->bi_vcnt--;
- bio2->bi_size -= len;
- bio2->bi_flags &= ~(1<< BIO_SEG_VALID);
- }
- goto bio_full;
+ if (bio_add_page(bio, page, len, 0))
+ continue;
+
+ /* stop here */
+ bio->bi_io_vec[bio->bi_vcnt].bv_page = page;
+ for (bio2 = biolist;
+ bio2 && bio2 != bio;
+ bio2 = bio2->bi_next) {
+ /* remove last page from this bio */
+ bio2->bi_vcnt--;
+ bio2->bi_size -= len;
+ bio2->bi_flags &= ~(1<< BIO_SEG_VALID);
}
+ goto bio_full;
}
nr_sectors += len>>9;
sector_nr += len>>9;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 05:10:22 +0100