bcachefs: opts->compression can now also be applied in the background

The "apply this compression method in the background" paths now use the
compression option if background_compression is not set; this means that
setting or changing the compression option will cause existing data to
be compressed accordingly in the background.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 5 insertions, 0 deletions

diff --git a/fs/bcachefs/opts.h b/fs/bcachefs/opts.h
index 7414c564b5d8..9a4b7faa3765 100644
--- a/fs/bcachefs/opts.h
+++ b/fs/bcachefs/opts.h
@@ -564,6 +564,11 @@ struct bch_io_opts {
 #undef x
 };
 
+static inline unsigned background_compression(struct bch_io_opts opts)
+{
+	return opts.background_compression ?: opts.compression;
+}
+
 struct bch_io_opts bch2_opts_to_inode_opts(struct bch_opts);
 bool bch2_opt_is_inode_opt(enum bch_opt_id);