[PATCH] btrfs: Accept and ignore compression level for lzo

[Calvin Owens <calvin@wbinvd.org>]

The compression level is meaningless for lzo, but before commit
3f093ccb95f30 ("btrfs: harden parsing of compression mount options"),
it was silently ignored if passed.

After that commit, passing a level with lzo fails to mount:

    BTRFS error: unrecognized compression value lzo:1

Restore the old behavior, in case any users were relying on it.

Fixes: 3f093ccb95f30 ("btrfs: harden parsing of compression mount options")
Signed-off-by: Calvin Owens <calvin@wbinvd.org>
---
 fs/btrfs/super.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index a262b494a89f..7ee35038c7fb 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -299,7 +299,7 @@ static int btrfs_parse_compress(struct btrfs_fs_context *ctx,
 		btrfs_set_opt(ctx->mount_opt, COMPRESS);
 		btrfs_clear_opt(ctx->mount_opt, NODATACOW);
 		btrfs_clear_opt(ctx->mount_opt, NODATASUM);
-	} else if (btrfs_match_compress_type(string, "lzo", false)) {
+	} else if (btrfs_match_compress_type(string, "lzo", true)) {
 		ctx->compress_type = BTRFS_COMPRESS_LZO;
 		ctx->compress_level = 0;
 		btrfs_set_opt(ctx->mount_opt, COMPRESS);
-- 
2.47.2