summaryrefslogtreecommitdiffstats
path: root/drivers/md/dm-ioctl.c
diff options
context:
space:
mode:
authorAlasdair G Kergon <agk@redhat.com>2010-08-12 04:13:52 +0100
committerAlasdair G Kergon <agk@redhat.com>2010-08-12 04:13:52 +0100
commit094ea9a071f68bd6f56c3f8cdeb5263727b68ce9 (patch)
tree26455271959efc8241adaee9f49c31e87606c9ff /drivers/md/dm-ioctl.c
parent6be544940109b4c45f560785fe5798ce3fdc1922 (diff)
downloadlinux-094ea9a071f68bd6f56c3f8cdeb5263727b68ce9.tar.bz2
dm ioctl: make __dev_status void
__dev_status() cannot fail so make it void and simplify callers. Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-ioctl.c')
-rw-r--r--drivers/md/dm-ioctl.c67
1 files changed, 31 insertions, 36 deletions
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 70f83071e9ab..4bc4c4fca90d 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -573,7 +573,7 @@ static struct dm_table *dm_get_live_or_inactive_table(struct mapped_device *md,
* Fills in a dm_ioctl structure, ready for sending back to
* userland.
*/
-static int __dev_status(struct mapped_device *md, struct dm_ioctl *param)
+static void __dev_status(struct mapped_device *md, struct dm_ioctl *param)
{
struct gendisk *disk = dm_disk(md);
struct dm_table *table;
@@ -617,8 +617,6 @@ static int __dev_status(struct mapped_device *md, struct dm_ioctl *param)
dm_table_put(table);
}
}
-
- return 0;
}
static int dev_create(struct dm_ioctl *param, size_t param_size)
@@ -638,14 +636,14 @@ static int dev_create(struct dm_ioctl *param, size_t param_size)
return r;
r = dm_hash_insert(param->name, *param->uuid ? param->uuid : NULL, md);
- if (r) {
- dm_put(md);
- return r;
- }
+ if (r)
+ goto out;
param->flags &= ~DM_INACTIVE_PRESENT_FLAG;
- r = __dev_status(md, param);
+ __dev_status(md, param);
+
+out:
dm_put(md);
return r;
@@ -841,13 +839,17 @@ static int do_suspend(struct dm_ioctl *param)
if (param->flags & DM_NOFLUSH_FLAG)
suspend_flags |= DM_SUSPEND_NOFLUSH_FLAG;
- if (!dm_suspended_md(md))
+ if (!dm_suspended_md(md)) {
r = dm_suspend(md, suspend_flags);
+ if (r)
+ goto out;
+ }
- if (!r)
- r = __dev_status(md, param);
+ __dev_status(md, param);
+out:
dm_put(md);
+
return r;
}
@@ -909,7 +911,7 @@ static int do_resume(struct dm_ioctl *param)
dm_table_destroy(old_map);
if (!r)
- r = __dev_status(md, param);
+ __dev_status(md, param);
dm_put(md);
return r;
@@ -933,16 +935,16 @@ static int dev_suspend(struct dm_ioctl *param, size_t param_size)
*/
static int dev_status(struct dm_ioctl *param, size_t param_size)
{
- int r;
struct mapped_device *md;
md = find_device(param);
if (!md)
return -ENXIO;
- r = __dev_status(md, param);
+ __dev_status(md, param);
dm_put(md);
- return r;
+
+ return 0;
}
/*
@@ -1017,7 +1019,7 @@ static void retrieve_status(struct dm_table *table,
*/
static int dev_wait(struct dm_ioctl *param, size_t param_size)
{
- int r;
+ int r = 0;
struct mapped_device *md;
struct dm_table *table;
@@ -1038,9 +1040,7 @@ static int dev_wait(struct dm_ioctl *param, size_t param_size)
* changed to trigger the event, so we may as well tell
* him and save an ioctl.
*/
- r = __dev_status(md, param);
- if (r)
- goto out;
+ __dev_status(md, param);
table = dm_get_live_or_inactive_table(md, param);
if (table) {
@@ -1048,8 +1048,9 @@ static int dev_wait(struct dm_ioctl *param, size_t param_size)
dm_table_put(table);
}
- out:
+out:
dm_put(md);
+
return r;
}
@@ -1184,7 +1185,7 @@ static int table_load(struct dm_ioctl *param, size_t param_size)
up_write(&_hash_lock);
param->flags |= DM_INACTIVE_PRESENT_FLAG;
- r = __dev_status(md, param);
+ __dev_status(md, param);
out:
dm_put(md);
@@ -1194,7 +1195,6 @@ out:
static int table_clear(struct dm_ioctl *param, size_t param_size)
{
- int r;
struct hash_cell *hc;
struct mapped_device *md;
@@ -1214,11 +1214,12 @@ static int table_clear(struct dm_ioctl *param, size_t param_size)
param->flags &= ~DM_INACTIVE_PRESENT_FLAG;
- r = __dev_status(hc->md, param);
+ __dev_status(hc->md, param);
md = hc->md;
up_write(&_hash_lock);
dm_put(md);
- return r;
+
+ return 0;
}
/*
@@ -1263,7 +1264,6 @@ static void retrieve_deps(struct dm_table *table,
static int table_deps(struct dm_ioctl *param, size_t param_size)
{
- int r = 0;
struct mapped_device *md;
struct dm_table *table;
@@ -1271,9 +1271,7 @@ static int table_deps(struct dm_ioctl *param, size_t param_size)
if (!md)
return -ENXIO;
- r = __dev_status(md, param);
- if (r)
- goto out;
+ __dev_status(md, param);
table = dm_get_live_or_inactive_table(md, param);
if (table) {
@@ -1281,9 +1279,9 @@ static int table_deps(struct dm_ioctl *param, size_t param_size)
dm_table_put(table);
}
- out:
dm_put(md);
- return r;
+
+ return 0;
}
/*
@@ -1292,7 +1290,6 @@ static int table_deps(struct dm_ioctl *param, size_t param_size)
*/
static int table_status(struct dm_ioctl *param, size_t param_size)
{
- int r;
struct mapped_device *md;
struct dm_table *table;
@@ -1300,9 +1297,7 @@ static int table_status(struct dm_ioctl *param, size_t param_size)
if (!md)
return -ENXIO;
- r = __dev_status(md, param);
- if (r)
- goto out;
+ __dev_status(md, param);
table = dm_get_live_or_inactive_table(md, param);
if (table) {
@@ -1310,9 +1305,9 @@ static int table_status(struct dm_ioctl *param, size_t param_size)
dm_table_put(table);
}
-out:
dm_put(md);
- return r;
+
+ return 0;
}
/*