btrfs: restore the thread_pool= behavior in remount for the end I/O workqueues

commit 40fac6472f22a59f5694496e179988ab4a1dfe07 upstream.

Commit d7b9416fe5c5 ("btrfs: remove btrfs_end_io_wq") converted the read
and I/O handling from btrfs_workqueues to Linux workqueues, and as part
of that lost the code to apply the thread_pool= based max_active limit
on remount.  Restore it.

Fixes: d7b9416fe5c5 ("btrfs: remove btrfs_end_io_wq")
CC: stable@vger.kernel.org # 6.0+
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index abfd7c897075a088c65f159e30f0a9528b285a20..fa03a4b2d90496a6e11aeeb151a868e8fc3b4c1d 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1939,6 +1939,8 @@ static void btrfs_resize_thread_pool(struct btrfs_fs_info *fs_info,
        btrfs_workqueue_set_max(fs_info->hipri_workers, new_pool_size);
        btrfs_workqueue_set_max(fs_info->delalloc_workers, new_pool_size);
        btrfs_workqueue_set_max(fs_info->caching_workers, new_pool_size);
+       workqueue_set_max_active(fs_info->endio_workers, new_pool_size);
+       workqueue_set_max_active(fs_info->endio_meta_workers, new_pool_size);
        btrfs_workqueue_set_max(fs_info->endio_write_workers, new_pool_size);
        btrfs_workqueue_set_max(fs_info->endio_freespace_worker, new_pool_size);
        btrfs_workqueue_set_max(fs_info->delayed_workers, new_pool_size);