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dm persistent data: eliminate unnecessary return values

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dm_bm_unlock and dm_tm_unlock return an integer value but the returned
value is always 0.  The calling code sometimes checks the return value
and sometimes doesn't.

Eliminate these unnecessary return values and also the checks for them.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mikulas Patocka
2015-10-22 16:46:59 -04:00
committed by Mike Snitzer
parent dbba42d8a9
commit 4c7da06f5a
13 changed files with 67 additions and 82 deletions
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15
drivers/md/dm-era-target.c
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@@ -343,7 +343,9 @@ static int superblock_all_zeroes(struct dm_block_manager *bm, bool *result)
}
}
return dm_bm_unlock(b);
dm_bm_unlock(b);
return 0;
}
/*----------------------------------------------------------------*/
@@ -582,7 +584,9 @@ static int open_metadata(struct era_metadata *md)
md->metadata_snap = le64_to_cpu(disk->metadata_snap);
md->archived_writesets = true;
return dm_bm_unlock(sblock);
dm_bm_unlock(sblock);
return 0;
bad:
dm_bm_unlock(sblock);
@@ -1046,12 +1050,7 @@ static int metadata_take_snap(struct era_metadata *md)
md->metadata_snap = dm_block_location(clone);
r = dm_tm_unlock(md->tm, clone);
if (r) {
DMERR("%s: couldn't unlock clone", __func__);
md->metadata_snap = SUPERBLOCK_LOCATION;
return r;
}
dm_tm_unlock(md->tm, clone);
return 0;
}