[PATCH v4 5/6] btrfs: add btrfs_compress_typelevel2str() helper

[koraynilay <koray.fra@gmail.com>]

Add the type:level equivalent of btrfs_compress_type2str() and use it
in prop_compression_extract() .

Signed-off-by: koraynilay <koray.fra@gmail.com>
---
 fs/btrfs/compression.c | 20 ++++++++++++++++++++
 fs/btrfs/compression.h |  2 ++
 fs/btrfs/props.c       | 19 +++----------------
 3 files changed, 25 insertions(+), 16 deletions(-)

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index b272b2263b5c..240e4c765b3a 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -53,6 +53,26 @@ const char* btrfs_compress_type2str(enum btrfs_compression_type type)
 	return NULL;
 }
 
+const char* btrfs_compress_typelevel2str(enum btrfs_compression_type type,
+					 int level, char *buf, size_t len)
+{
+	switch (type) {
+	case BTRFS_COMPRESS_ZLIB:
+	case BTRFS_COMPRESS_LZO:
+	case BTRFS_COMPRESS_ZSTD:
+		if (level) {
+			snprintf(buf, len, "%s:%d",
+				 btrfs_compress_type2str(type), level);
+			return buf;
+		}
+		return btrfs_compress_type2str(type);
+	default:
+		break;
+	}
+
+	return NULL;
+}
+
 static inline struct compressed_bio *to_compressed_bio(struct btrfs_bio *bbio)
 {
 	return container_of(bbio, struct compressed_bio, bbio);
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h
index c63bed9f4152..b9cc1bdd3ccb 100644
--- a/fs/btrfs/compression.h
+++ b/fs/btrfs/compression.h
@@ -132,6 +132,8 @@ extern const struct btrfs_compress_levels btrfs_lzo_compress;
 extern const struct btrfs_compress_levels btrfs_zstd_compress;
 
 const char* btrfs_compress_type2str(enum btrfs_compression_type type);
+const char* btrfs_compress_typelevel2str(enum btrfs_compression_type type,
+					 int level, char *buf, size_t len);
 bool btrfs_compress_is_valid_type(const char *str);
 
 int btrfs_compress_heuristic(struct btrfs_inode *inode, u64 start, u64 end);
diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c
index 740a05ade942..d8830f63984a 100644
--- a/fs/btrfs/props.c
+++ b/fs/btrfs/props.c
@@ -416,22 +416,9 @@ static bool prop_compression_ignore(const struct btrfs_inode *inode)
 static const char *prop_compression_extract(const struct btrfs_inode *inode,
 					    char *buf, size_t len)
 {
-	switch (inode->prop_compress) {
-	case BTRFS_COMPRESS_ZLIB:
-	case BTRFS_COMPRESS_LZO:
-	case BTRFS_COMPRESS_ZSTD:
-		if (inode->prop_compress_level) {
-			snprintf(buf, len, "%s:%d",
-				 btrfs_compress_type2str(inode->prop_compress),
-				 inode->prop_compress_level);
-			return buf;
-		}
-		return btrfs_compress_type2str(inode->prop_compress);
-	default:
-		break;
-	}
-
-	return NULL;
+	return btrfs_compress_typelevel2str(inode->prop_compress,
+					    inode->prop_compress_level,
+					    buf, len);
 }
 
 static struct prop_handler prop_handlers[] = {
-- 
2.55.0