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md-new-param-to_sync_page_io 

Add new parameter to 'sync_page_io'.

The new parameter allows us to distinguish between metadata and data
operations.  This becomes important later when we add the ability to
use separate devices for data and metadata.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
This commit is contained in:
Jonathan Brassow 2011-01-14 09:14:33 +11:00 коммит произвёл NeilBrown
Родитель 57b2caa394
Коммит ccebd4c415
5 изменённых файлов: 28 добавлений и 29 удалений
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4
drivers/md/bitmap.c
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@ -210,11 +210,11 @@ static struct page *read_sb_page(mddev_t *mddev, loff_t offset,
|| test_bit(Faulty, &rdev->flags))
continue;
target = rdev->sb_start + offset + index * (PAGE_SIZE/512);
target = offset + index * (PAGE_SIZE/512);
if (sync_page_io(rdev, target,
roundup(size, bdev_logical_block_size(rdev->bdev)),
page, READ)) {
page, READ, true)) {
page->index = index;
attach_page_buffers(page, NULL); /* so that free_buffer will
* quietly no-op */

9
drivers/md/md.c
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@ -795,7 +795,7 @@ static void bi_complete(struct bio *bio, int error)
}
int sync_page_io(mdk_rdev_t *rdev, sector_t sector, int size,
struct page *page, int rw)
struct page *page, int rw, bool metadata_op)
{
struct bio *bio = bio_alloc_mddev(GFP_NOIO, 1, rdev->mddev);
struct completion event;
@ -804,7 +804,10 @@ int sync_page_io(mdk_rdev_t *rdev, sector_t sector, int size,
rw |= REQ_SYNC | REQ_UNPLUG;
bio->bi_bdev = rdev->bdev;
bio->bi_sector = sector;
if (metadata_op)
bio->bi_sector = sector + rdev->sb_start;
else
bio->bi_sector = sector + rdev->data_offset;
bio_add_page(bio, page, size, 0);
init_completion(&event);
bio->bi_private = &event;
@ -829,7 +832,7 @@ static int read_disk_sb(mdk_rdev_t * rdev, int size)
return 0;
if (!sync_page_io(rdev, rdev->sb_start, size, rdev->sb_page, READ))
if (!sync_page_io(rdev, 0, size, rdev->sb_page, READ, true))
goto fail;
rdev->sb_loaded = 1;
return 0;

4
drivers/md/md.h
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@ -498,8 +498,8 @@ extern void md_flush_request(mddev_t *mddev, struct bio *bio);
extern void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev,
sector_t sector, int size, struct page *page);
extern void md_super_wait(mddev_t *mddev);
extern int sync_page_io(mdk_rdev_t *rdev, sector_t sector, int size,
struct page *page, int rw);
extern int sync_page_io(mdk_rdev_t *rdev, sector_t sector, int size,
struct page *page, int rw, bool metadata_op);
extern void md_do_sync(mddev_t *mddev);
extern void md_new_event(mddev_t *mddev);
extern int md_allow_write(mddev_t *mddev);

28
drivers/md/raid1.c
Просмотреть файл

@ -1365,10 +1365,10 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)
*/
rdev = conf->mirrors[d].rdev;
if (sync_page_io(rdev,
sect + rdev->data_offset,
sect,
s<<9,
bio->bi_io_vec[idx].bv_page,
READ)) {
READ, false)) {
success = 1;
break;
}
@ -1391,10 +1391,10 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)
rdev = conf->mirrors[d].rdev;
atomic_add(s, &rdev->corrected_errors);
if (sync_page_io(rdev,
sect + rdev->data_offset,
sect,
s<<9,
bio->bi_io_vec[idx].bv_page,
WRITE) == 0)
WRITE, false) == 0)
md_error(mddev, rdev);
}
d = start;
@ -1406,10 +1406,10 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)
continue;
rdev = conf->mirrors[d].rdev;
if (sync_page_io(rdev,
sect + rdev->data_offset,
sect,
s<<9,
bio->bi_io_vec[idx].bv_page,
READ) == 0)
READ, false) == 0)
md_error(mddev, rdev);
}
} else {
@ -1489,10 +1489,8 @@ static void fix_read_error(conf_t *conf, int read_disk,
rdev = conf->mirrors[d].rdev;
if (rdev &&
test_bit(In_sync, &rdev->flags) &&
sync_page_io(rdev,
sect + rdev->data_offset,
s<<9,
conf->tmppage, READ))
sync_page_io(rdev, sect, s<<9,
conf->tmppage, READ, false))
success = 1;
else {
d++;
@ -1515,9 +1513,8 @@ static void fix_read_error(conf_t *conf, int read_disk,
rdev = conf->mirrors[d].rdev;
if (rdev &&
test_bit(In_sync, &rdev->flags)) {
if (sync_page_io(rdev,
sect + rdev->data_offset,
s<<9, conf->tmppage, WRITE)
if (sync_page_io(rdev, sect, s<<9,
conf->tmppage, WRITE, false)
== 0)
/* Well, this device is dead */
md_error(mddev, rdev);
@ -1532,9 +1529,8 @@ static void fix_read_error(conf_t *conf, int read_disk,
rdev = conf->mirrors[d].rdev;
if (rdev &&
test_bit(In_sync, &rdev->flags)) {
if (sync_page_io(rdev,
sect + rdev->data_offset,
s<<9, conf->tmppage, READ)
if (sync_page_io(rdev, sect, s<<9,
conf->tmppage, READ, false)
== 0)
/* Well, this device is dead */
md_error(mddev, rdev);

12
drivers/md/raid10.c
Просмотреть файл

@ -1560,9 +1560,9 @@ static void fix_read_error(conf_t *conf, mddev_t *mddev, r10bio_t *r10_bio)
rcu_read_unlock();
success = sync_page_io(rdev,
r10_bio->devs[sl].addr +
sect + rdev->data_offset,
sect,
s<<9,
conf->tmppage, READ);
conf->tmppage, READ, false);
rdev_dec_pending(rdev, mddev);
rcu_read_lock();
if (success)
@ -1599,8 +1599,8 @@ static void fix_read_error(conf_t *conf, mddev_t *mddev, r10bio_t *r10_bio)
atomic_add(s, &rdev->corrected_errors);
if (sync_page_io(rdev,
r10_bio->devs[sl].addr +
sect + rdev->data_offset,
s<<9, conf->tmppage, WRITE)
sect,
s<<9, conf->tmppage, WRITE, false)
== 0) {
/* Well, this device is dead */
printk(KERN_NOTICE
@ -1636,9 +1636,9 @@ static void fix_read_error(conf_t *conf, mddev_t *mddev, r10bio_t *r10_bio)
rcu_read_unlock();
if (sync_page_io(rdev,
r10_bio->devs[sl].addr +
sect + rdev->data_offset,
sect,
s<<9, conf->tmppage,
READ) == 0) {
READ, false) == 0) {
/* Well, this device is dead */
printk(KERN_NOTICE
"md/raid10:%s: unable to read back "