diff options
author | Nikolay Borisov <nborisov@suse.com> | 2019-07-25 11:27:28 +0300 |
---|---|---|
committer | David Sterba <dsterba@suse.com> | 2019-09-09 14:58:59 +0200 |
commit | 5044ed4f394cb371fb85db3e3ec0296487b7d324 (patch) | |
tree | 4cd67f82ca2ac52bb9e098e86638b96f92a53494 /fs/btrfs/locking.c | |
parent | 8ddc319706e5ca201a128e3f2477938d7f174ca8 (diff) | |
download | linux-5044ed4f394cb371fb85db3e3ec0296487b7d324.tar.bz2 |
btrfs: Remove unused locking functions
Those were split out of btrfs_clear_lock_blocking_rw by
aa12c02778a9 ("btrfs: split btrfs_clear_lock_blocking_rw to read and write helpers")
however at that time this function was unused due to commit
523983401644 ("Btrfs: kill btrfs_clear_path_blocking"). Put the final
nail in the coffin of those 2 functions.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/locking.c')
-rw-r--r-- | fs/btrfs/locking.c | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c index 393eceda57c8..e4309bcf0b5f 100644 --- a/fs/btrfs/locking.c +++ b/fs/btrfs/locking.c @@ -119,42 +119,6 @@ void btrfs_set_lock_blocking_write(struct extent_buffer *eb) } } -void btrfs_clear_lock_blocking_read(struct extent_buffer *eb) -{ - trace_btrfs_clear_lock_blocking_read(eb); - /* - * No lock is required. The lock owner may change if we have a read - * lock, but it won't change to or away from us. If we have the write - * lock, we are the owner and it'll never change. - */ - if (eb->lock_nested && current->pid == eb->lock_owner) - return; - BUG_ON(atomic_read(&eb->blocking_readers) == 0); - read_lock(&eb->lock); - btrfs_assert_spinning_readers_get(eb); - /* atomic_dec_and_test implies a barrier */ - if (atomic_dec_and_test(&eb->blocking_readers)) - cond_wake_up_nomb(&eb->read_lock_wq); -} - -void btrfs_clear_lock_blocking_write(struct extent_buffer *eb) -{ - trace_btrfs_clear_lock_blocking_write(eb); - /* - * no lock is required. The lock owner may change if - * we have a read lock, but it won't change to or away - * from us. If we have the write lock, we are the owner - * and it'll never change. - */ - if (eb->lock_nested && current->pid == eb->lock_owner) - return; - write_lock(&eb->lock); - BUG_ON(eb->blocking_writers != 1); - btrfs_assert_spinning_writers_get(eb); - if (--eb->blocking_writers == 0) - cond_wake_up(&eb->write_lock_wq); -} - /* * take a spinning read lock. This will wait for any blocking * writers |