diff options
| author | Joe Thornber <ejt@redhat.com> | 2013-10-30 11:19:59 +0000 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2013-11-05 11:20:50 -0500 |
| commit | 9c1d4de56066e4d6abc66ec188faafd7b303fb08 (patch) | |
| tree | 58f397f4ea11d2f9c59c467f77072db153e2a968 | |
| parent | b63349a7a53d34ffde70cb4feec48ea9e6f5e97b (diff) | |
dm array: fix bug in growing array
Entries would be lost if the old tail block was partially filled.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.9+
| -rw-r--r-- | drivers/md/persistent-data/dm-array.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/md/persistent-data/dm-array.c b/drivers/md/persistent-data/dm-array.c index 172147eb1d40..af96e24ec328 100644 --- a/drivers/md/persistent-data/dm-array.c +++ b/drivers/md/persistent-data/dm-array.c @@ -509,15 +509,18 @@ static int grow_add_tail_block(struct resize *resize) static int grow_needs_more_blocks(struct resize *resize) { int r; + unsigned old_nr_blocks = resize->old_nr_full_blocks; if (resize->old_nr_entries_in_last_block > 0) { + old_nr_blocks++; + r = grow_extend_tail_block(resize, resize->max_entries); if (r) return r; } r = insert_full_ablocks(resize->info, resize->size_of_block, - resize->old_nr_full_blocks, + old_nr_blocks, resize->new_nr_full_blocks, resize->max_entries, resize->value, &resize->root); |