diff options
| author | Daniel Gomez <da.gomez@samsung.com> | 2025-12-20 06:49:37 +0300 |
|---|---|---|
| committer | Mikulas Patocka <mpatocka@redhat.com> | 2026-01-02 17:13:56 +0300 |
| commit | b13ef361d47f09b7aecd18e0383ecc83ff61057e (patch) | |
| tree | f0d55133c3f1fbff7e43cd208e3a5666b6cfd1dd | |
| parent | f3a9c95a15d2f4466acad5c68faeff79ca5e9f47 (diff) | |
| download | linux-b13ef361d47f09b7aecd18e0383ecc83ff61057e.tar.xz | |
dm: replace -EEXIST with -EBUSY
The -EEXIST error code is reserved by the module loading infrastructure
to indicate that a module is already loaded. When a module's init
function returns -EEXIST, userspace tools like kmod interpret this as
"module already loaded" and treat the operation as successful, returning
0 to the user even though the module initialization actually failed.
This follows the precedent set by commit 54416fd76770 ("netfilter:
conntrack: helper: Replace -EEXIST by -EBUSY") which fixed the same
issue in nf_conntrack_helper_register().
Affected modules:
* dm_cache dm_clone dm_integrity dm_mirror dm_multipath dm_pcache
* dm_vdo dm-ps-round-robin dm_historical_service_time dm_io_affinity
* dm_queue_length dm_service_time dm_snapshot
Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
| -rw-r--r-- | drivers/md/dm-exception-store.c | 2 | ||||
| -rw-r--r-- | drivers/md/dm-log.c | 2 | ||||
| -rw-r--r-- | drivers/md/dm-path-selector.c | 2 | ||||
| -rw-r--r-- | drivers/md/dm-target.c | 2 |
4 files changed, 4 insertions, 4 deletions
diff --git a/drivers/md/dm-exception-store.c b/drivers/md/dm-exception-store.c index c3799757bf4a..88f119a0a2ae 100644 --- a/drivers/md/dm-exception-store.c +++ b/drivers/md/dm-exception-store.c @@ -116,7 +116,7 @@ int dm_exception_store_type_register(struct dm_exception_store_type *type) if (!__find_exception_store_type(type->name)) list_add(&type->list, &_exception_store_types); else - r = -EEXIST; + r = -EBUSY; spin_unlock(&_lock); return r; diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c index 9d85d045f9d9..bced5a783ee3 100644 --- a/drivers/md/dm-log.c +++ b/drivers/md/dm-log.c @@ -121,7 +121,7 @@ int dm_dirty_log_type_register(struct dm_dirty_log_type *type) if (!__find_dirty_log_type(type->name)) list_add(&type->list, &_log_types); else - r = -EEXIST; + r = -EBUSY; spin_unlock(&_lock); return r; diff --git a/drivers/md/dm-path-selector.c b/drivers/md/dm-path-selector.c index d0b883fabfeb..2b0ac200f1c0 100644 --- a/drivers/md/dm-path-selector.c +++ b/drivers/md/dm-path-selector.c @@ -107,7 +107,7 @@ int dm_register_path_selector(struct path_selector_type *pst) if (__find_path_selector_type(pst->name)) { kfree(psi); - r = -EEXIST; + r = -EBUSY; } else list_add(&psi->list, &_path_selectors); diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c index 8fede41adec0..1fd41289de36 100644 --- a/drivers/md/dm-target.c +++ b/drivers/md/dm-target.c @@ -88,7 +88,7 @@ int dm_register_target(struct target_type *tt) if (__find_target_type(tt->name)) { DMERR("%s: '%s' target already registered", __func__, tt->name); - rv = -EEXIST; + rv = -EBUSY; } else { list_add(&tt->list, &_targets); } |