if (opts->override_compr)
seq_printf(s, ",compr=%s", jffs2_compr_name(opts->compr));
- if (opts->rp_size)
+ if (opts->set_rp_size)
seq_printf(s, ",rp_size=%u", opts->rp_size / 1024);
return 0;
Opt_rp_size,
};
-static const struct fs_parameter_spec jffs2_param_specs[] = {
- fsparam_enum ("compr", Opt_override_compr),
- fsparam_u32 ("rp_size", Opt_rp_size),
- {}
-};
-
-static const struct fs_parameter_enum jffs2_param_enums[] = {
- { Opt_override_compr, "none", JFFS2_COMPR_MODE_NONE },
+static const struct constant_table jffs2_param_compr[] = {
+ {"none", JFFS2_COMPR_MODE_NONE },
#ifdef CONFIG_JFFS2_LZO
- { Opt_override_compr, "lzo", JFFS2_COMPR_MODE_FORCELZO },
+ {"lzo", JFFS2_COMPR_MODE_FORCELZO },
#endif
#ifdef CONFIG_JFFS2_ZLIB
- { Opt_override_compr, "zlib", JFFS2_COMPR_MODE_FORCEZLIB },
+ {"zlib", JFFS2_COMPR_MODE_FORCEZLIB },
#endif
{}
};
-const struct fs_parameter_description jffs2_fs_parameters = {
- .name = "jffs2",
- .specs = jffs2_param_specs,
- .enums = jffs2_param_enums,
+static const struct fs_parameter_spec jffs2_fs_parameters[] = {
+ fsparam_enum ("compr", Opt_override_compr, jffs2_param_compr),
+ fsparam_u32 ("rp_size", Opt_rp_size),
+ {}
};
static int jffs2_parse_param(struct fs_context *fc, struct fs_parameter *param)
struct jffs2_sb_info *c = fc->s_fs_info;
int opt;
- opt = fs_parse(fc, &jffs2_fs_parameters, param, &result);
+ opt = fs_parse(fc, jffs2_fs_parameters, param, &result);
if (opt < 0)
return opt;
case Opt_rp_size:
if (result.uint_32 > UINT_MAX / 1024)
return invalf(fc, "jffs2: rp_size unrepresentable");
- opt = result.uint_32 * 1024;
- if (opt > c->mtd->size)
- return invalf(fc, "jffs2: Too large reserve pool specified, max is %llu KB",
- c->mtd->size / 1024);
- c->mount_opts.rp_size = opt;
+ c->mount_opts.rp_size = result.uint_32 * 1024;
+ c->mount_opts.set_rp_size = true;
break;
default:
return -EINVAL;
return 0;
}
+static inline void jffs2_update_mount_opts(struct fs_context *fc)
+{
+ struct jffs2_sb_info *new_c = fc->s_fs_info;
+ struct jffs2_sb_info *c = JFFS2_SB_INFO(fc->root->d_sb);
+
+ mutex_lock(&c->alloc_sem);
+ if (new_c->mount_opts.override_compr) {
+ c->mount_opts.override_compr = new_c->mount_opts.override_compr;
+ c->mount_opts.compr = new_c->mount_opts.compr;
+ }
+ if (new_c->mount_opts.set_rp_size) {
+ c->mount_opts.set_rp_size = new_c->mount_opts.set_rp_size;
+ c->mount_opts.rp_size = new_c->mount_opts.rp_size;
+ }
+ mutex_unlock(&c->alloc_sem);
+}
+
static int jffs2_reconfigure(struct fs_context *fc)
{
struct super_block *sb = fc->root->d_sb;
sync_filesystem(sb);
+ jffs2_update_mount_opts(fc);
+
return jffs2_do_remount_fs(sb, fc);
}
c->mtd = sb->s_mtd;
c->os_priv = sb;
+ if (c->mount_opts.rp_size > c->mtd->size)
+ return invalf(fc, "jffs2: Too large reserve pool specified, max is %llu KB",
+ c->mtd->size / 1024);
+
/* Initialize JFFS2 superblock locks, the further initialization will
* be done later */
mutex_init(&c->alloc_sem);
.owner = THIS_MODULE,
.name = "jffs2",
.init_fs_context = jffs2_init_fs_context,
- .parameters = &jffs2_fs_parameters,
+ .parameters = jffs2_fs_parameters,
.kill_sb = jffs2_kill_sb,
};
MODULE_ALIAS_FS("jffs2");