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Merge branch 'for-linus' of git://neil.brown.name/md

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* 'for-linus' of git://neil.brown.name/md:
  md/raid5: fix a hang on device failure.
  md: fix clearing of 'blocked' flag in the presence of bad blocks.
  md/linear: avoid corrupting structure while waiting for rcu_free to complete.
  md: use REQ_NOIDLE flag in md_super_write()
  md: ensure changes to 'write-mostly' are reflected in metadata.
  md: report failure if a 'set faulty' request doesn't.
This commit is contained in:
Linus Torvalds 2011-08-31 09:02:06 -07:00
commit fd53f7d8ee
3 changed files with 15 additions and 5 deletions
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2
drivers/md/linear.h
View File

@ -10,9 +10,9 @@ typedef struct dev_info dev_info_t;
struct linear_private_data
{
struct rcu_head rcu;
sector_t array_sectors;
dev_info_t disks[0];
struct rcu_head rcu;
};

16
drivers/md/md.c
View File

@ -848,7 +848,7 @@ void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev,
bio->bi_end_io = super_written;
atomic_inc(&mddev->pending_writes);
submit_bio(REQ_WRITE | REQ_SYNC | REQ_FLUSH | REQ_FUA, bio);
submit_bio(WRITE_FLUSH_FUA, bio);
}
void md_super_wait(mddev_t *mddev)
@ -1738,6 +1738,11 @@ static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev)
sb->level = cpu_to_le32(mddev->level);
sb->layout = cpu_to_le32(mddev->layout);
if (test_bit(WriteMostly, &rdev->flags))
sb->devflags |= WriteMostly1;
else
sb->devflags &= ~WriteMostly1;
if (mddev->bitmap && mddev->bitmap_info.file == NULL) {
sb->bitmap_offset = cpu_to_le32((__u32)mddev->bitmap_info.offset);
sb->feature_map = cpu_to_le32(MD_FEATURE_BITMAP_OFFSET);
@ -2561,7 +2566,10 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len)
int err = -EINVAL;
if (cmd_match(buf, "faulty") && rdev->mddev->pers) {
md_error(rdev->mddev, rdev);
err = 0;
if (test_bit(Faulty, &rdev->flags))
err = 0;
else
err = -EBUSY;
} else if (cmd_match(buf, "remove")) {
if (rdev->raid_disk >= 0)
err = -EBUSY;
@ -2584,7 +2592,7 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len)
err = 0;
} else if (cmd_match(buf, "-blocked")) {
if (!test_bit(Faulty, &rdev->flags) &&
test_bit(BlockedBadBlocks, &rdev->flags)) {
rdev->badblocks.unacked_exist) {
/* metadata handler doesn't understand badblocks,
* so we need to fail the device
*/
@ -5983,6 +5991,8 @@ static int set_disk_faulty(mddev_t *mddev, dev_t dev)
return -ENODEV;
md_error(mddev, rdev);
if (!test_bit(Faulty, &rdev->flags))
return -EBUSY;
return 0;
}

2
drivers/md/raid5.c
View File

@ -3336,7 +3336,7 @@ static void handle_stripe(struct stripe_head *sh)
finish:
/* wait for this device to become unblocked */
if (unlikely(s.blocked_rdev))
if (conf->mddev->external && unlikely(s.blocked_rdev))
md_wait_for_blocked_rdev(s.blocked_rdev, conf->mddev);
if (s.handle_bad_blocks)