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authorKiyoshi Ueda <k-ueda@ct.jp.nec.com>2006-12-08 13:41:06 +0300
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 19:29:09 +0300
commitd2a7ad29a810441e9dacbaddcc2f0c6045390008 (patch)
tree36bea90fa2f286f525a3b4f05adf40ec4d28221c /drivers/md/dm-snap.c
parent45cbcd798354251b99694086af9d57c99e89bb43 (diff)
downloadlinux-d2a7ad29a810441e9dacbaddcc2f0c6045390008.tar.xz
[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.c12
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))