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path: root/drivers/md/dm-exception-store.c
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Diffstat (limited to 'drivers/md/dm-exception-store.c')
-rw-r--r--drivers/md/dm-exception-store.c32
1 files changed, 8 insertions, 24 deletions
diff --git a/drivers/md/dm-exception-store.c b/drivers/md/dm-exception-store.c
index 8b4cd02f75a8..002417da1224 100644
--- a/drivers/md/dm-exception-store.c
+++ b/drivers/md/dm-exception-store.c
@@ -296,42 +296,29 @@ static int write_header(struct pstore *ps)
*/
static struct disk_exception *get_exception(struct pstore *ps, uint32_t index)
{
- if (index >= ps->exceptions_per_area)
- return NULL;
+ BUG_ON(index >= ps->exceptions_per_area);
return ((struct disk_exception *) ps->area) + index;
}
-static int read_exception(struct pstore *ps,
- uint32_t index, struct disk_exception *result)
+static void read_exception(struct pstore *ps,
+ uint32_t index, struct disk_exception *result)
{
- struct disk_exception *e;
-
- e = get_exception(ps, index);
- if (!e)
- return -EINVAL;
+ struct disk_exception *e = get_exception(ps, index);
/* copy it */
result->old_chunk = le64_to_cpu(e->old_chunk);
result->new_chunk = le64_to_cpu(e->new_chunk);
-
- return 0;
}
-static int write_exception(struct pstore *ps,
- uint32_t index, struct disk_exception *de)
+static void write_exception(struct pstore *ps,
+ uint32_t index, struct disk_exception *de)
{
- struct disk_exception *e;
-
- e = get_exception(ps, index);
- if (!e)
- return -EINVAL;
+ struct disk_exception *e = get_exception(ps, index);
/* copy it */
e->old_chunk = cpu_to_le64(de->old_chunk);
e->new_chunk = cpu_to_le64(de->new_chunk);
-
- return 0;
}
/*
@@ -349,10 +336,7 @@ static int insert_exceptions(struct pstore *ps, int *full)
*full = 1;
for (i = 0; i < ps->exceptions_per_area; i++) {
- r = read_exception(ps, i, &de);
-
- if (r)
- return r;
+ read_exception(ps, i, &de);
/*
* If the new_chunk is pointing at the start of