diff options
| author | Kiyoshi Ueda <k-ueda@ct.jp.nec.com> | 2006-12-08 11:41:06 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 17:29:09 +0100 |
| commit | d2a7ad29a810441e9dacbaddcc2f0c6045390008 (patch) | |
| tree | 36bea90fa2f286f525a3b4f05adf40ec4d28221c /drivers/md/dm-snap.c | |
| parent | [PATCH] dm: map and endio return code clarification (diff) | |
| download | linux-d2a7ad29a810441e9dacbaddcc2f0c6045390008.tar.xz linux-d2a7ad29a810441e9dacbaddcc2f0c6045390008.zip | |
[PATCH] dm: map and endio symbolic return codes
Update existing targets to use the new symbols for return values from target
map and end_io functions.
There is no effect on behaviour.
Test results:
Done build test without errors.
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: dm-devel@redhat.com
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/md/dm-snap.c')
| -rw-r--r-- | drivers/md/dm-snap.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index b0ce2ce82278..bbf861e4fed1 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -868,7 +868,7 @@ static int snapshot_map(struct dm_target *ti, struct bio *bio, { struct exception *e; struct dm_snapshot *s = (struct dm_snapshot *) ti->private; - int r = 1; + int r = DM_MAPIO_REMAPPED; chunk_t chunk; struct pending_exception *pe = NULL; @@ -914,7 +914,7 @@ static int snapshot_map(struct dm_target *ti, struct bio *bio, remap_exception(s, &pe->e, bio); bio_list_add(&pe->snapshot_bios, bio); - r = 0; + r = DM_MAPIO_SUBMITTED; if (!pe->started) { /* this is protected by snap->lock */ @@ -992,7 +992,7 @@ static int snapshot_status(struct dm_target *ti, status_type_t type, *---------------------------------------------------------------*/ static int __origin_write(struct list_head *snapshots, struct bio *bio) { - int r = 1, first = 0; + int r = DM_MAPIO_REMAPPED, first = 0; struct dm_snapshot *snap; struct exception *e; struct pending_exception *pe, *next_pe, *primary_pe = NULL; @@ -1050,7 +1050,7 @@ static int __origin_write(struct list_head *snapshots, struct bio *bio) bio_list_add(&primary_pe->origin_bios, bio); - r = 0; + r = DM_MAPIO_SUBMITTED; } if (!pe->primary_pe) { @@ -1099,7 +1099,7 @@ static int __origin_write(struct list_head *snapshots, struct bio *bio) static int do_origin(struct dm_dev *origin, struct bio *bio) { struct origin *o; - int r = 1; + int r = DM_MAPIO_REMAPPED; down_read(&_origins_lock); o = __lookup_origin(origin->bdev); @@ -1156,7 +1156,7 @@ static int origin_map(struct dm_target *ti, struct bio *bio, return -EOPNOTSUPP; /* Only tell snapshots if this is a write */ - return (bio_rw(bio) == WRITE) ? do_origin(dev, bio) : 1; + return (bio_rw(bio) == WRITE) ? do_origin(dev, bio) : DM_MAPIO_REMAPPED; } #define min_not_zero(l, r) (l == 0) ? r : ((r == 0) ? l : min(l, r)) |