btrfs: allow to set compression level for zlib

[mirror_ubuntu-hirsute-kernel.git] / fs / btrfs / super.c

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 4fb7eefb80aeca073b5bd15b8a4048eb796c8ee8..57f3f9600e18bc82a7e36c1689531508fb680abb 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -508,6 +508,8 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
                            strncmp(args[0].from, "zlib", 4) == 0) {
                                compress_type = "zlib";
                                info->compress_type = BTRFS_COMPRESS_ZLIB;
+                               info->compress_level =
+                                       btrfs_compress_str2level(args[0].from);
                                btrfs_set_opt(info->mount_opt, COMPRESS);
                                btrfs_clear_opt(info->mount_opt, NODATACOW);
                                btrfs_clear_opt(info->mount_opt, NODATASUM);
@@ -555,9 +557,9 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
                              compress_force != saved_compress_force)) ||
                            (!btrfs_test_opt(info, COMPRESS) &&
                             no_compress == 1)) {
-                               btrfs_info(info, "%s %s compression",
+                               btrfs_info(info, "%s %s compression, level %d",
                                           (compress_force) ? "force" : "use",
-                                          compress_type);
+                                          compress_type, info->compress_level);
                        }
                        compress_force = false;
                        break;
@@ -1258,6 +1260,8 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
                        seq_printf(seq, ",compress-force=%s", compress_type);
                else
                        seq_printf(seq, ",compress=%s", compress_type);
+               if (info->compress_level)
+                       seq_printf(seq, "%d", info->compress_level);
        }
        if (btrfs_test_opt(info, NOSSD))
                seq_puts(seq, ",nossd");