From 7de3ee57da4b717050e79c9313a9bf66ccc72519 Mon Sep 17 00:00:00 2001
From: Mikulas Patocka <mpatocka@redhat.com>
Date: Fri, 21 Dec 2012 20:23:41 +0000
Subject: [PATCH] dm: remove map_info
This patch removes map_info from bio-based device mapper targets.
map_info is still used for request-based targets.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---
drivers/md/dm-crypt.c | 5 ++---
drivers/md/dm-delay.c | 5 ++---
drivers/md/dm-flakey.c | 6 ++----
drivers/md/dm-linear.c | 3 +--
drivers/md/dm-raid.c | 4 ++--
drivers/md/dm-raid1.c | 6 ++----
drivers/md/dm-snap.c | 12 ++++--------
drivers/md/dm-stripe.c | 6 ++----
drivers/md/dm-target.c | 5 ++---
drivers/md/dm-thin.c | 15 +++++----------
drivers/md/dm-verity.c | 3 +--
drivers/md/dm-zero.c | 5 ++---
drivers/md/dm.c | 4 ++--
include/linux/device-mapper.h | 6 ++----
14 files changed, 31 insertions(+), 54 deletions(-)
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index bbf459bca61d9..f7369f9d85957 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1689,8 +1689,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv)
return ret;
}
-static int crypt_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int crypt_map(struct dm_target *ti, struct bio *bio)
{
struct dm_crypt_io *io;
struct crypt_config *cc = ti->private;
@@ -1846,7 +1845,7 @@ static int crypt_iterate_devices(struct dm_target *ti,
static struct target_type crypt_target = {
.name = "crypt",
- .version = {1, 11, 0},
+ .version = {1, 12, 0},
.module = THIS_MODULE,
.ctr = crypt_ctr,
.dtr = crypt_dtr,
diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c
index f53846f9ab502..cc1bd048acb2b 100644
--- a/drivers/md/dm-delay.c
+++ b/drivers/md/dm-delay.c
@@ -274,8 +274,7 @@ static void delay_resume(struct dm_target *ti)
atomic_set(&dc->may_delay, 1);
}
-static int delay_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int delay_map(struct dm_target *ti, struct bio *bio)
{
struct delay_c *dc = ti->private;
@@ -338,7 +337,7 @@ static int delay_iterate_devices(struct dm_target *ti,
static struct target_type delay_target = {
.name = "delay",
- .version = {1, 1, 0},
+ .version = {1, 2, 0},
.module = THIS_MODULE,
.ctr = delay_ctr,
.dtr = delay_dtr,
diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c
index 660f98167e7bb..9721f2ffb1a22 100644
--- a/drivers/md/dm-flakey.c
+++ b/drivers/md/dm-flakey.c
@@ -270,8 +270,7 @@ static void corrupt_bio_data(struct bio *bio, struct flakey_c *fc)
}
}
-static int flakey_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int flakey_map(struct dm_target *ti, struct bio *bio)
{
struct flakey_c *fc = ti->private;
unsigned elapsed;
@@ -321,8 +320,7 @@ static int flakey_map(struct dm_target *ti, struct bio *bio,
return DM_MAPIO_REMAPPED;
}
-static int flakey_end_io(struct dm_target *ti, struct bio *bio,
- int error, union map_info *map_context)
+static int flakey_end_io(struct dm_target *ti, struct bio *bio, int error)
{
struct flakey_c *fc = ti->private;
struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data));
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c
index 82222a8cf7505..328cad5617ab3 100644
--- a/drivers/md/dm-linear.c
+++ b/drivers/md/dm-linear.c
@@ -88,8 +88,7 @@ static void linear_map_bio(struct dm_target *ti, struct bio *bio)
bio->bi_sector = linear_map_sector(ti, bio->bi_sector);
}
-static int linear_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int linear_map(struct dm_target *ti, struct bio *bio)
{
linear_map_bio(ti, bio);
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 4a20bf8c72da6..3d8984edeff79 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -1218,7 +1218,7 @@ static void raid_dtr(struct dm_target *ti)
context_free(rs);
}
-static int raid_map(struct dm_target *ti, struct bio *bio, union map_info *map_context)
+static int raid_map(struct dm_target *ti, struct bio *bio)
{
struct raid_set *rs = ti->private;
struct mddev *mddev = &rs->md;
@@ -1432,7 +1432,7 @@ static void raid_resume(struct dm_target *ti)
static struct target_type raid_target = {
.name = "raid",
- .version = {1, 3, 1},
+ .version = {1, 4, 0},
.module = THIS_MODULE,
.ctr = raid_ctr,
.dtr = raid_dtr,
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 57685cf0afa8c..fa519185ebba8 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -1142,8 +1142,7 @@ static void mirror_dtr(struct dm_target *ti)
/*
* Mirror mapping function
*/
-static int mirror_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int mirror_map(struct dm_target *ti, struct bio *bio)
{
int r, rw = bio_rw(bio);
struct mirror *m;
@@ -1192,8 +1191,7 @@ static int mirror_map(struct dm_target *ti, struct bio *bio,
return DM_MAPIO_REMAPPED;
}
-static int mirror_end_io(struct dm_target *ti, struct bio *bio,
- int error, union map_info *map_context)
+static int mirror_end_io(struct dm_target *ti, struct bio *bio, int error)
{
int rw = bio_rw(bio);
struct mirror_set *ms = (struct mirror_set *) ti->private;
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index e1ecacf2456f4..59fc18ae52c21 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -1567,8 +1567,7 @@ static void remap_exception(struct dm_snapshot *s, struct dm_exception *e,
s->store->chunk_mask);
}
-static int snapshot_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int snapshot_map(struct dm_target *ti, struct bio *bio)
{
struct dm_exception *e;
struct dm_snapshot *s = ti->private;
@@ -1683,8 +1682,7 @@ static int snapshot_map(struct dm_target *ti, struct bio *bio,
* If merging is currently taking place on the chunk in question, the
* I/O is deferred by adding it to s->bios_queued_during_merge.
*/
-static int snapshot_merge_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int snapshot_merge_map(struct dm_target *ti, struct bio *bio)
{
struct dm_exception *e;
struct dm_snapshot *s = ti->private;
@@ -1744,8 +1742,7 @@ static int snapshot_merge_map(struct dm_target *ti, struct bio *bio,
return r;
}
-static int snapshot_end_io(struct dm_target *ti, struct bio *bio,
- int error, union map_info *map_context)
+static int snapshot_end_io(struct dm_target *ti, struct bio *bio, int error)
{
struct dm_snapshot *s = ti->private;
@@ -2119,8 +2116,7 @@ static void origin_dtr(struct dm_target *ti)
dm_put_device(ti, dev);
}
-static int origin_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int origin_map(struct dm_target *ti, struct bio *bio)
{
struct dm_dev *dev = ti->private;
bio->bi_bdev = dev->bdev;
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 4e7ba82146c09..6b0e5ea380276 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -271,8 +271,7 @@ static int stripe_map_discard(struct stripe_c *sc, struct bio *bio,
}
}
-static int stripe_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int stripe_map(struct dm_target *ti, struct bio *bio)
{
struct stripe_c *sc = ti->private;
uint32_t stripe;
@@ -342,8 +341,7 @@ static int stripe_status(struct dm_target *ti, status_type_t type,
return 0;
}
-static int stripe_end_io(struct dm_target *ti, struct bio *bio,
- int error, union map_info *map_context)
+static int stripe_end_io(struct dm_target *ti, struct bio *bio, int error)
{
unsigned i;
char major_minor[16];
diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c
index 8da366cf381cd..617d21a772568 100644
--- a/drivers/md/dm-target.c
+++ b/drivers/md/dm-target.c
@@ -126,15 +126,14 @@ static void io_err_dtr(struct dm_target *tt)
/* empty */
}
-static int io_err_map(struct dm_target *tt, struct bio *bio,
- union map_info *map_context)
+static int io_err_map(struct dm_target *tt, struct bio *bio)
{
return -EIO;
}
static struct target_type error_target = {
.name = "error",
- .version = {1, 0, 1},
+ .version = {1, 1, 0},
.ctr = io_err_ctr,
.dtr = io_err_dtr,
.map = io_err_map,
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index e7743c69a24c7..675ae5274016d 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -1371,8 +1371,7 @@ static void thin_hook_bio(struct thin_c *tc, struct bio *bio)
/*
* Non-blocking function called from the thin target's map function.
*/
-static int thin_bio_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int thin_bio_map(struct dm_target *ti, struct bio *bio)
{
int r;
struct thin_c *tc = ti->private;
@@ -1980,8 +1979,7 @@ static int pool_ctr(struct dm_target *ti, unsigned argc, char **argv)
return r;
}
-static int pool_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int pool_map(struct dm_target *ti, struct bio *bio)
{
int r;
struct pool_c *pt = ti->private;
@@ -2626,17 +2624,14 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv)
return r;
}
-static int thin_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int thin_map(struct dm_target *ti, struct bio *bio)
{
bio->bi_sector = dm_target_offset(ti, bio->bi_sector);
- return thin_bio_map(ti, bio, map_context);
+ return thin_bio_map(ti, bio);
}
-static int thin_endio(struct dm_target *ti,
- struct bio *bio, int err,
- union map_info *map_context)
+static int thin_endio(struct dm_target *ti, struct bio *bio, int err)
{
unsigned long flags;
struct dm_thin_endio_hook *h = dm_per_bio_data(bio, sizeof(struct dm_thin_endio_hook));
diff --git a/drivers/md/dm-verity.c b/drivers/md/dm-verity.c
index 78f349894b24e..52cde982164a5 100644
--- a/drivers/md/dm-verity.c
+++ b/drivers/md/dm-verity.c
@@ -458,8 +458,7 @@ static void verity_prefetch_io(struct dm_verity *v, struct dm_verity_io *io)
* Bio map function. It allocates dm_verity_io structure and bio vector and
* fills them. Then it issues prefetches and the I/O.
*/
-static int verity_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int verity_map(struct dm_target *ti, struct bio *bio)
{
struct dm_verity *v = ti->private;
struct dm_verity_io *io;
diff --git a/drivers/md/dm-zero.c b/drivers/md/dm-zero.c
index cc2b3cb819465..69a5c3b3b340c 100644
--- a/drivers/md/dm-zero.c
+++ b/drivers/md/dm-zero.c
@@ -33,8 +33,7 @@ static int zero_ctr(struct dm_target *ti, unsigned int argc, char **argv)
/*
* Return zeros only on reads
*/
-static int zero_map(struct dm_target *ti, struct bio *bio,
- union map_info *map_context)
+static int zero_map(struct dm_target *ti, struct bio *bio)
{
switch(bio_rw(bio)) {
case READ:
@@ -56,7 +55,7 @@ static int zero_map(struct dm_target *ti, struct bio *bio,
static struct target_type zero_target = {
.name = "zero",
- .version = {1, 0, 0},
+ .version = {1, 1, 0},
.module = THIS_MODULE,
.ctr = zero_ctr,
.map = zero_map,
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 5ee580b4f3309..c72e4d5a96178 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -645,7 +645,7 @@ static void clone_endio(struct bio *bio, int error)
error = -EIO;
if (endio) {
- r = endio(tio->ti, bio, error, &tio->info);
+ r = endio(tio->ti, bio, error);
if (r < 0 || r == DM_ENDIO_REQUEUE)
/*
* error and requeue request are handled
@@ -1004,7 +1004,7 @@ static void __map_bio(struct dm_target *ti, struct dm_target_io *tio)
*/
atomic_inc(&tio->io->io_count);
sector = clone->bi_sector;
- r = ti->type->map(ti, clone, &tio->info);
+ r = ti->type->map(ti, clone);
if (r == DM_MAPIO_REMAPPED) {
/* the bio has been remapped so dispatch it */
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index eb96ef6fd8b7a..bf6afa2fc432b 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -45,8 +45,7 @@ typedef void (*dm_dtr_fn) (struct dm_target *ti);
* = 1: simple remap complete
* = 2: The target wants to push back the io
*/
-typedef int (*dm_map_fn) (struct dm_target *ti, struct bio *bio,
- union map_info *map_context);
+typedef int (*dm_map_fn) (struct dm_target *ti, struct bio *bio);
typedef int (*dm_map_request_fn) (struct dm_target *ti, struct request *clone,
union map_info *map_context);
@@ -59,8 +58,7 @@ typedef int (*dm_map_request_fn) (struct dm_target *ti, struct request *clone,
* 2 : The target wants to push back the io
*/
typedef int (*dm_endio_fn) (struct dm_target *ti,
- struct bio *bio, int error,
- union map_info *map_context);
+ struct bio *bio, int error);
typedef int (*dm_request_endio_fn) (struct dm_target *ti,
struct request *clone, int error,
union map_info *map_context);
--
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