diff options
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 5099e4633e50..3225ac365408 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -381,6 +381,9 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) int ret = 0; char *compress_type; bool compress_force = false; + enum btrfs_compression_type saved_compress_type; + bool saved_compress_force; + int no_compress = 0; cache_gen = btrfs_super_cache_generation(root->fs_info->super_copy); if (cache_gen) @@ -458,6 +461,10 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) /* Fallthrough */ case Opt_compress: case Opt_compress_type: + saved_compress_type = btrfs_test_opt(root, COMPRESS) ? + info->compress_type : BTRFS_COMPRESS_NONE; + saved_compress_force = + btrfs_test_opt(root, FORCE_COMPRESS); if (token == Opt_compress || token == Opt_compress_force || strcmp(args[0].from, "zlib") == 0) { @@ -466,6 +473,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) btrfs_set_opt(info->mount_opt, COMPRESS); btrfs_clear_opt(info->mount_opt, NODATACOW); btrfs_clear_opt(info->mount_opt, NODATASUM); + no_compress = 0; } else if (strcmp(args[0].from, "lzo") == 0) { compress_type = "lzo"; info->compress_type = BTRFS_COMPRESS_LZO; @@ -473,25 +481,21 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) btrfs_clear_opt(info->mount_opt, NODATACOW); btrfs_clear_opt(info->mount_opt, NODATASUM); btrfs_set_fs_incompat(info, COMPRESS_LZO); + no_compress = 0; } else if (strncmp(args[0].from, "no", 2) == 0) { compress_type = "no"; btrfs_clear_opt(info->mount_opt, COMPRESS); btrfs_clear_opt(info->mount_opt, FORCE_COMPRESS); compress_force = false; + no_compress++; } else { ret = -EINVAL; goto out; } if (compress_force) { - btrfs_set_and_info(root, FORCE_COMPRESS, - "force %s compression", - compress_type); + btrfs_set_opt(info->mount_opt, FORCE_COMPRESS); } else { - if (!btrfs_test_opt(root, COMPRESS)) - btrfs_info(root->fs_info, - "btrfs: use %s compression", - compress_type); /* * If we remount from compress-force=xxx to * compress=xxx, we need clear FORCE_COMPRESS @@ -500,6 +504,17 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) */ btrfs_clear_opt(info->mount_opt, FORCE_COMPRESS); } + if ((btrfs_test_opt(root, COMPRESS) && + (info->compress_type != saved_compress_type || + compress_force != saved_compress_force)) || + (!btrfs_test_opt(root, COMPRESS) && + no_compress == 1)) { + btrfs_info(root->fs_info, + "%s %s compression", + (compress_force) ? "force" : "use", + compress_type); + } + compress_force = false; break; case Opt_ssd: btrfs_set_and_info(root, SSD, |