Commit e106392e authored by Somasundaram Krishnasamy's avatar Somasundaram Krishnasamy Committed by Greg Kroah-Hartman

dm era: save spacemap metadata root after the pre-commit

commit 117aceb0 upstream.

When committing era metadata to disk, it doesn't always save the latest
spacemap metadata root in superblock. Due to this, metadata is getting
corrupted sometimes when reopening the device. The correct order of update
should be, pre-commit (shadows spacemap root), save the spacemap root
(newly shadowed block) to in-core superblock and then the final commit.
Signed-off-by: default avatarSomasundaram Krishnasamy <somasundaram.krishnasamy@oracle.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 02ad5d8d
...@@ -957,15 +957,15 @@ static int metadata_commit(struct era_metadata *md) ...@@ -957,15 +957,15 @@ static int metadata_commit(struct era_metadata *md)
} }
} }
r = save_sm_root(md); r = dm_tm_pre_commit(md->tm);
if (r) { if (r) {
DMERR("%s: save_sm_root failed", __func__); DMERR("%s: pre commit failed", __func__);
return r; return r;
} }
r = dm_tm_pre_commit(md->tm); r = save_sm_root(md);
if (r) { if (r) {
DMERR("%s: pre commit failed", __func__); DMERR("%s: save_sm_root failed", __func__);
return r; return r;
} }
......
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