From fb592373cddeb4ed6c21eef4d6063f15176ab463 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 29 Sep 2017 15:43:48 -0400 Subject: [PATCH] btrfs: add ref-verify mount option This adds the infrastructure for turning ref verify on and off for a mount, to be used by a later patch. Signed-off-by: Josef Bacik Reviewed-by: David Sterba [ enhnance btrfs_print_mod_info to print if ref-verify is compiled in ] Signed-off-by: David Sterba --- fs/btrfs/ctree.h | 1 + fs/btrfs/super.c | 17 +++++++++++++++++ 2 files changed, 18 insertions(+) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 7995666..75947c6 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1335,6 +1335,7 @@ static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info) #define BTRFS_MOUNT_FRAGMENT_METADATA (1 << 25) #define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 26) #define BTRFS_MOUNT_NOLOGREPLAY (1 << 27) +#define BTRFS_MOUNT_REF_VERIFY (1 << 28) #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) #define BTRFS_DEFAULT_MAX_INLINE (2048) diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 770ac08..880ab49 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -326,6 +326,9 @@ enum { #ifdef CONFIG_BTRFS_DEBUG Opt_fragment_data, Opt_fragment_metadata, Opt_fragment_all, #endif +#ifdef CONFIG_BTRFS_FS_REF_VERIFY + Opt_ref_verify, +#endif Opt_err, }; @@ -387,6 +390,9 @@ static const match_table_t tokens = { {Opt_fragment_metadata, "fragment=metadata"}, {Opt_fragment_all, "fragment=all"}, #endif +#ifdef CONFIG_BTRFS_FS_REF_VERIFY + {Opt_ref_verify, "ref_verify"}, +#endif {Opt_err, NULL}, }; @@ -825,6 +831,12 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, btrfs_set_opt(info->mount_opt, FRAGMENT_DATA); break; #endif +#ifdef CONFIG_BTRFS_FS_REF_VERIFY + case Opt_ref_verify: + btrfs_info(info, "doing ref verification"); + btrfs_set_opt(info->mount_opt, REF_VERIFY); + break; +#endif case Opt_err: btrfs_info(info, "unrecognized mount option '%s'", p); ret = -EINVAL; @@ -1305,6 +1317,8 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry) if (btrfs_test_opt(info, FRAGMENT_METADATA)) seq_puts(seq, ",fragment=metadata"); #endif + if (btrfs_test_opt(info, REF_VERIFY)) + seq_puts(seq, ",ref_verify"); seq_printf(seq, ",subvolid=%llu", BTRFS_I(d_inode(dentry))->root->root_key.objectid); seq_puts(seq, ",subvol="); @@ -2319,6 +2333,9 @@ static void btrfs_print_mod_info(void) #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY ", integrity-checker=on" #endif +#ifdef CONFIG_BTRFS_FS_REF_VERIFY + ", ref-verify=on" +#endif "\n", btrfs_crc32c_impl()); } -- 2.7.4