diff options
Diffstat (limited to 'drivers/md/dm-snap.c')
| -rw-r--r-- | drivers/md/dm-snap.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index 5e553c50c21..288994ee714 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -234,6 +234,16 @@ static int __chunk_is_tracked(struct dm_snapshot *s, chunk_t chunk) } /* + * This conflicting I/O is extremely improbable in the caller, + * so msleep(1) is sufficient and there is no need for a wait queue. + */ +static void __check_for_conflicting_io(struct dm_snapshot *s, chunk_t chunk) +{ + while (__chunk_is_tracked(s, chunk)) + msleep(1); +} + +/* * One of these per registered origin, held in the snapshot_origins hash */ struct origin { @@ -1102,12 +1112,8 @@ static void pending_complete(struct dm_snap_pending_exception *pe, int success) goto out; } - /* - * Check for conflicting reads. This is extremely improbable, - * so msleep(1) is sufficient and there is no need for a wait queue. - */ - while (__chunk_is_tracked(s, pe->e.old_chunk)) - msleep(1); + /* Check for conflicting reads */ + __check_for_conflicting_io(s, pe->e.old_chunk); /* * Add a proper exception, and remove the |