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authorKent Overstreet <kent.overstreet@linux.dev>2022-11-26 17:09:59 -0500
committerKent Overstreet <kent.overstreet@linux.dev>2022-11-26 17:09:59 -0500
commit934a84dfaf719af82dadbbe0e2480baff03c905b (patch)
tree22deb77e752f90c842ac2f8dce91f5a602afd49d /libbcachefs/two_state_shared_lock.c
parent48eefee7495c6e145f3fcfe6ab83f9e8bc27a1ec (diff)
Update bcachefs sources to 5963d1b1a4 bcacehfs: Fix bch2_get_alloc_in_memory_pos()
Diffstat (limited to 'libbcachefs/two_state_shared_lock.c')
-rw-r--r--libbcachefs/two_state_shared_lock.c29
1 files changed, 2 insertions, 27 deletions
diff --git a/libbcachefs/two_state_shared_lock.c b/libbcachefs/two_state_shared_lock.c
index dc508d54..9764c2e6 100644
--- a/libbcachefs/two_state_shared_lock.c
+++ b/libbcachefs/two_state_shared_lock.c
@@ -2,32 +2,7 @@
#include "two_state_shared_lock.h"
-void bch2_two_state_unlock(two_state_lock_t *lock, int s)
+void __bch2_two_state_lock(two_state_lock_t *lock, int s)
{
- long i = s ? 1 : -1;
-
- BUG_ON(atomic_long_read(&lock->v) == 0);
-
- if (atomic_long_sub_return_release(i, &lock->v) == 0)
- wake_up_all(&lock->wait);
-}
-
-bool bch2_two_state_trylock(two_state_lock_t *lock, int s)
-{
- long i = s ? 1 : -1;
- long v = atomic_long_read(&lock->v), old;
-
- do {
- old = v;
-
- if (i > 0 ? v < 0 : v > 0)
- return false;
- } while ((v = atomic_long_cmpxchg_acquire(&lock->v,
- old, old + i)) != old);
- return true;
-}
-
-void bch2_two_state_lock(two_state_lock_t *lock, int s)
-{
- wait_event(lock->wait, bch2_two_state_trylock(lock, s));
+ __wait_event(lock->wait, bch2_two_state_trylock(lock, s));
}