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| author | David Sterba <dsterba@suse.com> | 2018-04-05 02:41:06 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-12-17 16:51:45 +0300 |
| commit | 53176dde0acd8fa49c6c2e6097283acc6241480f (patch) | |
| tree | fe42e45af2f699762556d58619b8365091ea445e /fs/btrfs/ctree.h | |
| parent | 129827e3001fd1e6892a0629b48f9c7c91cbb8b6 (diff) | |
| download | linux-53176dde0acd8fa49c6c2e6097283acc6241480f.tar.xz | |
btrfs: dev-replace: remove custom read/write blocking scheme
After the rw semaphore has been added, the custom blocking using
::blocking_readers and ::read_lock_wq is redundant.
The blocking logic in __btrfs_map_block is replaced by extending the
time the semaphore is held, that has the same blocking effect on writes
as the previous custom scheme that waited until ::blocking_readers was
zero.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index b4f97120aecd..5fb4cb646c82 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -379,8 +379,6 @@ struct btrfs_dev_replace { struct mutex lock_finishing_cancel_unmount; struct rw_semaphore rwsem; - atomic_t blocking_readers; - wait_queue_head_t read_lock_wq; struct btrfs_scrub_progress scrub_progress; |