diff options
| author |   NeilBrown <neilb@suse.de> | 2010-06-01 19:37:26 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2010-07-26 12:52:27 +1000 |
| commit | 676e42d896ab6967859fabbb06f4e11b9615cbcf (patch) | |
| tree | efab4dffe8e930ec9ef51a5a4d4fd04ffe3749b1 /drivers/md | |
| parent | md/raid5: ensure we create a unique name for kmem_cache when mddev has no gendisk (diff) | |
| download | linux-dev-676e42d896ab6967859fabbb06f4e11b9615cbcf.tar.xz linux-dev-676e42d896ab6967859fabbb06f4e11b9615cbcf.zip | |
md: be more careful setting MD_CHANGE_CLEAN
When MD_CHANGE_CLEAN is set we might block in md_write_start.
So we should only set it when fairly sure that something will clear
it.
There are two places where it is set so as to encourage a metadata
update to record the progress of resync/recovery. This should only
be done if the internal metadata update mechanisms are in use, which
can be tested by by inspecting '->persistent'.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/bitmap.c | 3 | ||||
| -rw-r--r-- | drivers/md/md.c | 3 |
2 files changed, 4 insertions, 2 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index 1742435ce3ae..4518994712c7 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -1526,7 +1526,8 @@ void bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector) atomic_read(&bitmap->mddev->recovery_active) == 0); bitmap->mddev->curr_resync_completed = bitmap->mddev->curr_resync; - set_bit(MD_CHANGE_CLEAN, &bitmap->mddev->flags); + if (bitmap->mddev->persistent) + set_bit(MD_CHANGE_CLEAN, &bitmap->mddev->flags); sector &= ~((1ULL << CHUNK_BLOCK_SHIFT(bitmap)) - 1); s = 0; while (s < sector && s < bitmap->mddev->resync_max_sectors) { diff --git a/drivers/md/md.c b/drivers/md/md.c index 9007651ce175..d636b0a40fac 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -6753,7 +6753,8 @@ void md_do_sync(mddev_t *mddev) atomic_read(&mddev->recovery_active) == 0); mddev->curr_resync_completed = mddev->curr_resync; - set_bit(MD_CHANGE_CLEAN, &mddev->flags); + if (mddev->persistent) + set_bit(MD_CHANGE_CLEAN, &mddev->flags); sysfs_notify(&mddev->kobj, NULL, "sync_completed"); } |