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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>
This commit is contained in:
Jon Brassow 2009-12-10 23:52:09 +00:00 committed by Alasdair G Kergon
parent 7e201b3513
commit d32a6ea65f
1 changed files with 4 additions and 12 deletions
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16
drivers/md/dm-snap.c
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@ -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);