dm_task_no_open_count() only sets DM_SKIP_BDGET_FLAG in the dm task,
which has been ignored by the kernel since 5c6bd75d06db ("[PATCH] dm: prevent
removal if open") (v2.6.18 / 2006). Even for older kernels, not setting
this flag has only a minor, performance-related effect (skipping one call
to bdget_disk()). Don't use this dead API any more.
Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
---
kpartx/devmapper.c | 15 ---------------
libmultipath/devmapper.c | 36 ------------------------------------
multipathd/dmevents.c | 2 --
multipathd/waiter.c | 2 --
tests/dmevents.c | 13 -------------
5 files changed, 68 deletions(-)
diff --git a/kpartx/devmapper.c b/kpartx/devmapper.c
index f12762c..bf07838 100644
--- a/kpartx/devmapper.c
+++ b/kpartx/devmapper.c
@@ -35,8 +35,6 @@ int dm_prereq(char * str, uint32_t x, uint32_t y, uint32_t z)
if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS)))
return 1;
- dm_task_no_open_count(dmt);
-
if (!dm_task_run(dmt))
goto out;
@@ -78,7 +76,6 @@ int dm_simplecmd(int task, const char *name, int no_flush, __DM_API_COOKIE_UNUSE
if (!dm_task_set_name(dmt, name))
goto out;
- dm_task_no_open_count(dmt);
dm_task_skip_lockfs(dmt);
if (no_flush)
@@ -175,8 +172,6 @@ int dm_addmap(int task, const char *name, const char *target,
if (!dm_task_set_gid(dmt, gid))
goto addout;
- dm_task_no_open_count(dmt);
-
#ifdef LIBDM_API_COOKIE
if (!udev_sync)
udev_flags = DM_UDEV_DISABLE_LIBRARY_FALLBACK;
@@ -212,8 +207,6 @@ static int dm_map_present(char *str, char **uuid)
if (!dm_task_set_name(dmt, str))
goto out;
- dm_task_no_open_count(dmt);
-
if (!dm_task_run(dmt))
goto out;
@@ -247,7 +240,6 @@ static int dm_rename (const char *old, const char *new)
if (!dm_task_set_name(dmt, old) ||
!dm_task_set_newname(dmt, new) ||
- !dm_task_no_open_count(dmt) ||
!dm_task_set_cookie(dmt, &cookie, udev_flags))
goto out;
@@ -291,7 +283,6 @@ dm_mapname(int major, int minor)
if (!(dmt = dm_task_create(DM_DEVICE_INFO)))
return NULL;
- dm_task_no_open_count(dmt);
dm_task_set_major(dmt, major);
dm_task_set_minor(dmt, minor);
@@ -352,7 +343,6 @@ dm_mapuuid(const char *mapname)
if (!dm_task_set_name(dmt, mapname))
goto out;
- dm_task_no_open_count(dmt);
if (!dm_task_run(dmt))
goto out;
@@ -407,7 +397,6 @@ dm_get_map(const char *mapname, char * outparams)
if (!dm_task_set_name(dmt, mapname))
goto out;
- dm_task_no_open_count(dmt);
if (!dm_task_run(dmt))
goto out;
@@ -474,8 +463,6 @@ dm_type(const char * name, char * type)
if (!dm_task_set_name(dmt, name))
goto out;
- dm_task_no_open_count(dmt);
-
if (!dm_task_run(dmt))
goto out;
@@ -545,8 +532,6 @@ do_foreach_partmaps (const char * mapname, const char *uuid,
if (!(dmt = dm_task_create(DM_DEVICE_LIST)))
return 1;
- dm_task_no_open_count(dmt);
-
if (!dm_task_run(dmt))
goto out;
diff --git a/libmultipath/devmapper.c b/libmultipath/devmapper.c
index baa1ead..8996c1d 100644
--- a/libmultipath/devmapper.c
+++ b/libmultipath/devmapper.c
@@ -217,8 +217,6 @@ static int dm_tgt_version (unsigned int *version, char *str)
if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS)))
return 1;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run(dmt)) {
dm_log_error(2, DM_DEVICE_LIST_VERSIONS, dmt);
condlog(0, "Cannot communicate with kernel DM");
@@ -398,7 +396,6 @@ dm_simplecmd (int task, const char *name, int flags, uint16_t udev_flags) {
if (!dm_task_set_name (dmt, name))
goto out;
- dm_task_no_open_count(dmt);
dm_task_skip_lockfs(dmt); /* for DM_DEVICE_RESUME */
#ifdef LIBDM_API_FLUSH
if (flags & DMFL_NO_FLUSH)
@@ -495,8 +492,6 @@ dm_addmap (int task, const char *target, struct multipath *mpp,
task == DM_DEVICE_RELOAD ? "reload" : "addmap", mpp->size,
target, params);
- dm_task_no_open_count(dmt);
-
if (task == DM_DEVICE_CREATE &&
!dm_task_set_cookie(dmt, &cookie, udev_flags))
goto freeout;
@@ -627,8 +622,6 @@ dm_get_info(const char *name, struct dm_info *info)
if (!dm_task_set_name(dmt, name))
goto out;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run(dmt)) {
dm_log_error(3, DM_DEVICE_INFO, dmt);
goto out;
@@ -667,8 +660,6 @@ int dm_get_map(const char *name, unsigned long long *size, char **outparams)
if (!dm_task_set_name(dmt, name))
goto out;
- dm_task_no_open_count(dmt);
-
errno = 0;
if (!libmp_dm_task_run(dmt)) {
dm_log_error(3, DM_DEVICE_TABLE, dmt);
@@ -787,8 +778,6 @@ int dm_get_status(const char *name, char **outstatus)
if (!dm_task_set_name(dmt, name))
goto out;
- dm_task_no_open_count(dmt);
-
errno = 0;
if (!libmp_dm_task_run(dmt)) {
dm_log_error(3, DM_DEVICE_STATUS, dmt);
@@ -845,8 +834,6 @@ int dm_type(const char *name, char *type)
if (!dm_task_set_name(dmt, name))
goto out;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run(dmt)) {
dm_log_error(3, DM_DEVICE_TABLE, dmt);
goto out;
@@ -889,8 +876,6 @@ int dm_is_mpath(const char *name)
if (!dm_task_set_name(dmt, name))
goto out_task;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run(dmt)) {
dm_log_error(3, DM_DEVICE_TABLE, dmt);
goto out_task;
@@ -950,8 +935,6 @@ dm_map_present_by_uuid(const char *uuid)
if (!(dmt = libmp_dm_task_create(DM_DEVICE_INFO)))
goto out;
- dm_task_no_open_count(dmt);
-
if (!dm_task_set_uuid(dmt, prefixed_uuid))
goto out_task;
@@ -1158,8 +1141,6 @@ int dm_flush_maps (int retries)
if (!(dmt = libmp_dm_task_create (DM_DEVICE_LIST)))
return r;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run (dmt)) {
dm_log_error(3, DM_DEVICE_LIST, dmt);
goto out;
@@ -1205,8 +1186,6 @@ dm_message(const char * mapname, char * message)
if (!dm_task_set_message(dmt, message))
goto out;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run(dmt)) {
dm_log_error(2, DM_DEVICE_TARGET_MSG, dmt);
goto out;
@@ -1341,8 +1320,6 @@ dm_get_maps (vector mp)
if (!(dmt = libmp_dm_task_create(DM_DEVICE_LIST)))
return 1;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run(dmt)) {
dm_log_error(3, DM_DEVICE_LIST, dmt);
goto out;
@@ -1419,7 +1396,6 @@ dm_mapname(int major, int minor)
!dm_task_set_minor(dmt, minor))
goto bad;
- dm_task_no_open_count(dmt);
r = libmp_dm_task_run(dmt);
if (!r) {
dm_log_error(2, DM_DEVICE_INFO, dmt);
@@ -1455,8 +1431,6 @@ do_foreach_partmaps (const char * mapname,
if (!(dmt = libmp_dm_task_create(DM_DEVICE_LIST)))
return 1;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run(dmt)) {
dm_log_error(3, DM_DEVICE_LIST, dmt);
goto out;
@@ -1665,8 +1639,6 @@ dm_rename (const char * old, char * new, char *delim, int skip_kpartx)
if (!dm_task_set_newname(dmt, new))
goto out;
- dm_task_no_open_count(dmt);
-
if (!dm_task_set_cookie(dmt, &cookie, udev_flags))
goto out;
r = libmp_dm_task_run(dmt);
@@ -1713,8 +1685,6 @@ int dm_reassign_table(const char *name, char *old, char *new)
if (!dm_task_set_name(dmt, name))
goto out;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run(dmt)) {
dm_log_error(3, DM_DEVICE_TABLE, dmt);
goto out;
@@ -1756,8 +1726,6 @@ int dm_reassign_table(const char *name, char *old, char *new)
} while (next);
if (modified) {
- dm_task_no_open_count(reload_dmt);
-
if (!libmp_dm_task_run(reload_dmt)) {
dm_log_error(3, DM_DEVICE_RELOAD, reload_dmt);
condlog(3, "%s: failed to reassign targets", name);
@@ -1803,8 +1771,6 @@ int dm_reassign(const char *mapname)
if (!dm_task_set_name(dmt, mapname))
goto out;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run(dmt)) {
dm_log_error(3, DM_DEVICE_DEPS, dmt);
goto out;
@@ -1861,8 +1827,6 @@ int dm_setgeometry(struct multipath *mpp)
if (!dm_task_set_name(dmt, mpp->alias))
goto out;
- dm_task_no_open_count(dmt);
-
/* What a sick interface ... */
snprintf(heads, 4, "%u", pp->geom.heads);
snprintf(sectors, 4, "%u", pp->geom.sectors);
diff --git a/multipathd/dmevents.c b/multipathd/dmevents.c
index 5657000..3fbdc55 100644
--- a/multipathd/dmevents.c
+++ b/multipathd/dmevents.c
@@ -154,8 +154,6 @@ static int dm_get_events(void)
if (!(dmt = libmp_dm_task_create(DM_DEVICE_LIST)))
return -1;
- dm_task_no_open_count(dmt);
-
if (!libmp_dm_task_run(dmt)) {
dm_log_error(3, DM_DEVICE_LIST, dmt);
goto fail;
diff --git a/multipathd/waiter.c b/multipathd/waiter.c
index d1f344b..1dd93c5 100644
--- a/multipathd/waiter.c
+++ b/multipathd/waiter.c
@@ -108,8 +108,6 @@ static int waiteventloop (struct event_thread *waiter)
return 1;
}
- dm_task_no_open_count(waiter->dmt);
-
/* wait */
sigemptyset(&set);
sigaddset(&set, SIGUSR2);
diff --git a/tests/dmevents.c b/tests/dmevents.c
index 668e6d2..2f98173 100644
--- a/tests/dmevents.c
+++ b/tests/dmevents.c
@@ -267,15 +267,6 @@ struct dm_task *__wrap_libmp_dm_task_create(int task)
return mock_type(struct dm_task *);
}
-int __real_dm_task_no_open_count(struct dm_task *dmt);
-int __wrap_dm_task_no_open_count(struct dm_task *dmt)
-{
- if (!setup_done)
- return __real_dm_task_no_open_count(dmt);
- assert_ptr_equal((struct test_data *)dmt, &data);
- return mock_type(int);
-}
-
int __real_dm_task_run(struct dm_task *dmt);
int __wrap_dm_task_run(struct dm_task *dmt)
{
@@ -554,7 +545,6 @@ static void test_get_events_bad1(void **state)
skip();
will_return(__wrap_libmp_dm_task_create, &data);
- will_return(__wrap_dm_task_no_open_count, 1);
will_return(__wrap_dm_task_run, 0);
assert_int_equal(dm_get_events(), -1);
}
@@ -567,7 +557,6 @@ static void test_get_events_bad2(void **state)
skip();
will_return(__wrap_libmp_dm_task_create, &data);
- will_return(__wrap_dm_task_no_open_count, 1);
will_return(__wrap_dm_task_run, 1);
will_return(__wrap_dm_task_get_names, 0);
assert_int_equal(dm_get_events(), -1);
@@ -582,7 +571,6 @@ static void test_get_events_good0(void **state)
assert_int_equal(add_dm_device_event("foo", 1, 5), 0);
will_return(__wrap_libmp_dm_task_create, &data);
- will_return(__wrap_dm_task_no_open_count, 1);
will_return(__wrap_dm_task_run, 1);
will_return(__wrap_dm_task_get_names, 1);
assert_int_equal(dm_get_events(), 0);
@@ -617,7 +605,6 @@ static void test_get_events_good1(void **state)
assert_int_equal(add_dm_device_event("foo", 1, 6), 0);
assert_int_equal(remove_dm_device_event("xyzzy"), 0);
will_return(__wrap_libmp_dm_task_create, &data);
- will_return(__wrap_dm_task_no_open_count, 1);
will_return(__wrap_dm_task_run, 1);
will_return(__wrap_dm_task_get_names, 1);
assert_int_equal(dm_get_events(), 0);
--
2.45.2
