From: Mikulas Patocka mpatocka@redhat.com
[ Upstream commit 984bf2cc531e778e49298fdf6730e0396166aa21 ]
There was a problem that a user burned a dm-integrity image on CDROM and could not activate it because it had a non-empty journal.
Fix this problem by flushing the journal (done by the previous commit) and clearing the journal (done by this commit). Once the journal is cleared, dm-integrity won't attempt to replay it on the next activation.
Signed-off-by: Mikulas Patocka mpatocka@redhat.com Signed-off-by: Mike Snitzer snitzer@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-integrity.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index 847dfd682e20..2156a2d5ac70 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -254,6 +254,7 @@ struct dm_integrity_c {
struct completion crypto_backoff;
+ bool wrote_to_journal; bool journal_uptodate; bool just_formatted; bool recalculate_flag; @@ -2256,6 +2257,8 @@ static void integrity_commit(struct work_struct *w) if (!commit_sections) goto release_flush_bios;
+ ic->wrote_to_journal = true; + i = commit_start; for (n = 0; n < commit_sections; n++) { for (j = 0; j < ic->journal_section_entries; j++) { @@ -2979,6 +2982,14 @@ static void dm_integrity_postsuspend(struct dm_target *ti) queue_work(ic->writer_wq, &ic->writer_work); drain_workqueue(ic->writer_wq); dm_integrity_flush_buffers(ic, true); + if (ic->wrote_to_journal) { + init_journal(ic, ic->free_section, + ic->journal_sections - ic->free_section, ic->commit_seq); + if (ic->free_section) { + init_journal(ic, 0, ic->free_section, + next_commit_seq(ic->commit_seq)); + } + } }
if (ic->mode == 'B') { @@ -3006,6 +3017,8 @@ static void dm_integrity_resume(struct dm_target *ti)
DEBUG_print("resume\n");
+ ic->wrote_to_journal = false; + if (ic->provided_data_sectors != old_provided_data_sectors) { if (ic->provided_data_sectors > old_provided_data_sectors && ic->mode == 'B' &&