diff options
| author | Mateusz Guzik <mjguzik@gmail.com> | 2026-07-24 19:14:21 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2026-07-31 10:09:12 +0200 |
| commit | 91e27ed8a387c156f72175748de48db9ede74237 (patch) | |
| tree | a5ba2b9d51bef378cd048a07330179ec8c6c5bfd /lib | |
| parent | 42c8ed5835921a7b2523517fd6caad1d79b69146 (diff) | |
lockref: tidy up dead count handling
1. put the dead val into a macro so that it can be used in other places
2. __lockref_is_dead():
- drop the __ suffix, this is not an internal routine
- drop the spurious cast, the value is already a signed int
- use READ_ONCE to prevent any compile shenanigans
3. provide lockref_is_dead_or_zero()
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://patch.msgid.link/20260724171422.429284-2-mjguzik@gmail.com
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/lockref.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/lockref.c b/lib/lockref.c index 5d8e3ef3860e..9b3dd688d8cd 100644 --- a/lib/lockref.c +++ b/lib/lockref.c @@ -131,7 +131,7 @@ EXPORT_SYMBOL(lockref_put_or_lock); void lockref_mark_dead(struct lockref *lockref) { assert_spin_locked(&lockref->lock); - lockref->count = -128; + lockref->count = __LOCKREF_DEAD_VAL; } EXPORT_SYMBOL(lockref_mark_dead); |