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authorJon Brassow <jbrassow@redhat.com>2009-12-10 23:52:09 +0000
committerAlasdair G Kergon <agk@redhat.com>2009-12-10 23:52:09 +0000
commitd32a6ea65fbc33621f9c790da3dff10201640b2a (patch)
treea352ceb4ed92812bda57dd33806417da84adbc7b /drivers/md/dm-snap.c
parent7e201b35132a1f02c931a0a06760766c846bb49b (diff)
downloadop-kernel-dev-d32a6ea65fbc33621f9c790da3dff10201640b2a.zip
op-kernel-dev-d32a6ea65fbc33621f9c790da3dff10201640b2a.tar.gz
dm snapshot: consolidate insert exception functions
Consolidate the insert_*exception functions. 'insert_completed_exception' already contains all the logic to handle 'insert_exception' (via check for a hash_shift of 0), so remove redundant function. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-snap.c')
-rw-r--r--drivers/md/dm-snap.c16
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 48978ab..9135498 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -390,13 +390,6 @@ static uint32_t exception_hash(struct exception_table *et, chunk_t chunk)
return (chunk >> et->hash_shift) & et->hash_mask;
}
-static void insert_exception(struct exception_table *eh,
- struct dm_snap_exception *e)
-{
- struct list_head *l = &eh->table[exception_hash(eh, e->old_chunk)];
- list_add(&e->hash_list, l);
-}
-
static void remove_exception(struct dm_snap_exception *e)
{
list_del(&e->hash_list);
@@ -457,10 +450,9 @@ static void free_pending_exception(struct dm_snap_pending_exception *pe)
atomic_dec(&s->pending_exceptions_count);
}
-static void insert_completed_exception(struct dm_snapshot *s,
- struct dm_snap_exception *new_e)
+static void insert_exception(struct exception_table *eh,
+ struct dm_snap_exception *new_e)
{
- struct exception_table *eh = &s->complete;
struct list_head *l;
struct dm_snap_exception *e = NULL;
@@ -518,7 +510,7 @@ static int dm_add_exception(void *context, chunk_t old, chunk_t new)
/* Consecutive_count is implicitly initialised to zero */
e->new_chunk = new;
- insert_completed_exception(s, e);
+ insert_exception(&s->complete, e);
return 0;
}
@@ -925,7 +917,7 @@ static void pending_complete(struct dm_snap_pending_exception *pe, int success)
* Add a proper exception, and remove the
* in-flight exception from the list.
*/
- insert_completed_exception(s, e);
+ insert_exception(&s->complete, e);
out:
remove_exception(&pe->e);
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