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A few more fixes for md in 3.4 

Two are tagged for -stable. They can cause an oops, but very rarely.
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Merge tag 'md-3.4-fixes' of git://neil.brown.name/md

Pull a few more fixes for md from NeilBrown:
 "Two are tagged for -stable.  They can cause an oops, but very rarely."

* tag 'md-3.4-fixes' of git://neil.brown.name/md:
  md/bitmap: prevent bitmap_daemon_work running while initialising bitmap
  md/raid1,raid10: Fix calculation of 'vcnt' when processing error recovery.
  MD: Bitmap version cleanup.
This commit is contained in:
Linus Torvalds 2012-04-12 13:12:56 -07:00
parent 7e06648972 afbaa90b80
commit e42bd6e4a6
3 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/md/bitmap.c
View File

@ -539,9 +539,6 @@ static int bitmap_new_disk_sb(struct bitmap *bitmap)
bitmap->events_cleared = bitmap->mddev->events;
sb->events_cleared = cpu_to_le64(bitmap->mddev->events);
bitmap->flags |= BITMAP_HOSTENDIAN;
sb->version = cpu_to_le32(BITMAP_MAJOR_HOSTENDIAN);
kunmap_atomic(sb);
return 0;
@ -1788,7 +1785,9 @@ int bitmap_load(struct mddev *mddev)
* re-add of a missing device */
start = mddev->recovery_cp;
mutex_lock(&mddev->bitmap_info.mutex);
err = bitmap_init_from_disk(bitmap, start);
mutex_unlock(&mddev->bitmap_info.mutex);
if (err)
goto out;

3
drivers/md/raid1.c
View File

@ -1712,6 +1712,7 @@ static int process_checks(struct r1bio *r1_bio)
struct r1conf *conf = mddev->private;
int primary;
int i;
int vcnt;
for (primary = 0; primary < conf->raid_disks * 2; primary++)
if (r1_bio->bios[primary]->bi_end_io == end_sync_read &&
@ -1721,9 +1722,9 @@ static int process_checks(struct r1bio *r1_bio)
break;
}
r1_bio->read_disk = primary;
vcnt = (r1_bio->sectors + PAGE_SIZE / 512 - 1) >> (PAGE_SHIFT - 9);
for (i = 0; i < conf->raid_disks * 2; i++) {
int j;
int vcnt = r1_bio->sectors >> (PAGE_SHIFT- 9);
struct bio *pbio = r1_bio->bios[primary];
struct bio *sbio = r1_bio->bios[i];
int size;

4
drivers/md/raid10.c
View File

@ -1788,6 +1788,7 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio)
struct r10conf *conf = mddev->private;
int i, first;
struct bio *tbio, *fbio;
int vcnt;
atomic_set(&r10_bio->remaining, 1);
@ -1802,10 +1803,10 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio)
first = i;
fbio = r10_bio->devs[i].bio;
vcnt = (r10_bio->sectors + (PAGE_SIZE >> 9) - 1) >> (PAGE_SHIFT - 9);
/* now find blocks with errors */
for (i=0 ; i < conf->copies ; i++) {
int j, d;
int vcnt = r10_bio->sectors >> (PAGE_SHIFT-9);
tbio = r10_bio->devs[i].bio;
@ -1871,7 +1872,6 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio)
*/
for (i = 0; i < conf->copies; i++) {
int j, d;
int vcnt = r10_bio->sectors >> (PAGE_SHIFT-9);
tbio = r10_bio->devs[i].repl_bio;
if (!tbio || !tbio->bi_end_io)