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[PATCH] dm: map and endio symbolic return codes

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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>
This commit is contained in:
Kiyoshi Ueda
2006-12-08 02:41:06 -08:00
committed by Linus Torvalds
parent 45cbcd7983
commit d2a7ad29a8
7 changed files with 19 additions and 19 deletions
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12
drivers/md/dm-snap.c
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@@ -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))