Update bcachefs sources to da7fefde29 bcachefs: shim for userspace raid library

[bcachefs-tools-debian] / libbcachefs / opts.c

diff --git a/libbcachefs/opts.c b/libbcachefs/opts.c
index 1dab991bc29b0fa6ac01e8e759d98ebdec334980..449cd5bfcfc7317adc615e72a5f4ad385b6cc811 100644 (file)
--- a/libbcachefs/opts.c
+++ b/libbcachefs/opts.c
@@ -2,6 +2,7 @@
 #include <linux/kernel.h>
 
 #include "bcachefs.h"
+#include "compress.h"
 #include "disk_groups.h"
 #include "opts.h"
 #include "super-io.h"
@@ -268,6 +269,46 @@ void bch2_opt_to_text(struct printbuf *out, struct bch_fs *c,
        }
 }
 
+int bch2_opt_check_may_set(struct bch_fs *c, int id, u64 v)
+{
+       int ret = 0;
+
+       switch (id) {
+       case Opt_compression:
+       case Opt_background_compression:
+               ret = bch2_check_set_has_compressed_data(c, v);
+               break;
+       case Opt_erasure_code:
+               if (v &&
+                   !(c->sb.features & (1ULL << BCH_FEATURE_EC))) {
+                       mutex_lock(&c->sb_lock);
+                       c->disk_sb.sb->features[0] |=
+                               cpu_to_le64(1ULL << BCH_FEATURE_EC);
+
+                       bch2_write_super(c);
+                       mutex_unlock(&c->sb_lock);
+               }
+               break;
+       }
+
+       return ret;
+}
+
+int bch2_opts_check_may_set(struct bch_fs *c)
+{
+       unsigned i;
+       int ret;
+
+       for (i = 0; i < bch2_opts_nr; i++) {
+               ret = bch2_opt_check_may_set(c, i,
+                               bch2_opt_get_by_id(&c->opts, i));
+               if (ret)
+                       return ret;
+       }
+
+       return 0;
+}
+
 int bch2_parse_mount_opts(struct bch_opts *opts, char *options)
 {
        char *opt, *name, *val;