diff options
| author | Kent Overstreet <kent.overstreet@linux.dev> | 2023-05-20 20:57:55 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:10:01 -0400 |
| commit | 0d2234a79e877b1bfa71b2c8c712a155be419827 (patch) | |
| tree | 3ddf278178dc2b05ce81e20b0ed79dde52b8890d /fs/bcachefs/btree_locking.h | |
| parent | 01bf56a9771466147d94a013bc5678d0ed1b1382 (diff) | |
| download | linux-0d2234a79e877b1bfa71b2c8c712a155be419827.tar.gz linux-0d2234a79e877b1bfa71b2c8c712a155be419827.tar.bz2 linux-0d2234a79e877b1bfa71b2c8c712a155be419827.zip | |
six locks: Kill six_lock_pcpu_(alloc|free)
six_lock_pcpu_alloc() is an unsafe interface: it's not safe to allocate
or free the percpu reader count on an existing lock that's in use, the
only safe time to allocate percpu readers is when the lock is first
being initialized.
This patch adds a flags parameter to six_lock_init(), and instead of
six_lock_pcpu_free() we now expose six_lock_exit(), which does the same
thing but is less likely to be misused.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/btree_locking.h')
| -rw-r--r-- | fs/bcachefs/btree_locking.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/bcachefs/btree_locking.h b/fs/bcachefs/btree_locking.h index 76aac49966fe..660975839c89 100644 --- a/fs/bcachefs/btree_locking.h +++ b/fs/bcachefs/btree_locking.h @@ -13,7 +13,7 @@ #include "btree_iter.h" #include "six.h" -void bch2_btree_lock_init(struct btree_bkey_cached_common *); +void bch2_btree_lock_init(struct btree_bkey_cached_common *, enum six_lock_init_flags); #ifdef CONFIG_LOCKDEP void bch2_assert_btree_nodes_not_locked(void); |