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-rw-r--r--fs/bcachefs/Kconfig12
-rw-r--r--fs/bcachefs/alloc_foreground.c3
2 files changed, 15 insertions, 0 deletions
diff --git a/fs/bcachefs/Kconfig b/fs/bcachefs/Kconfig
index c08c2c7d6fbb..fddc7be58022 100644
--- a/fs/bcachefs/Kconfig
+++ b/fs/bcachefs/Kconfig
@@ -33,6 +33,18 @@ config BCACHEFS_QUOTA
depends on BCACHEFS_FS
select QUOTACTL
+config BCACHEFS_ERASURE_CODING
+ bool "bcachefs erasure coding (RAID5/6) support (EXPERIMENTAL)"
+ depends on BCACHEFS_FS
+ select QUOTACTL
+ help
+ This enables the "erasure_code" filesysystem and inode option, which
+ organizes data into reed-solomon stripes instead of ordinary
+ replication.
+
+ WARNING: this feature is still undergoing on disk format changes, and
+ should only be enabled for testing purposes.
+
config BCACHEFS_POSIX_ACL
bool "bcachefs POSIX ACL support"
depends on BCACHEFS_FS
diff --git a/fs/bcachefs/alloc_foreground.c b/fs/bcachefs/alloc_foreground.c
index b85c7765272f..5042858719c0 100644
--- a/fs/bcachefs/alloc_foreground.c
+++ b/fs/bcachefs/alloc_foreground.c
@@ -1321,6 +1321,9 @@ int bch2_alloc_sectors_start_trans(struct btree_trans *trans,
int ret;
int i;
+ if (!IS_ENABLED(CONFIG_BCACHEFS_ERASURE_CODING))
+ erasure_code = false;
+
BUG_ON(flags & BCH_WRITE_ONLY_SPECIFIED_DEVS);
BUG_ON(!nr_replicas || !nr_replicas_required);