linux-kernel - [PATCH v2] btrfs: remove BTRFS_REF_LAST from btrfs_ref

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Message-Id: <20250417142655.1284388-1-frank.li@vivo.com>
Date: Thu, 17 Apr 2025 08:26:49 -0600
From: Yangtao Li <frank.li@...o.com>
To: clm@...com,
	josef@...icpanda.com,
	dsterba@...e.com
Cc: linux-btrfs@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Yangtao Li <frank.li@...o.com>
Subject: [PATCH v2] btrfs: remove BTRFS_REF_LAST from btrfs_ref_type

Commit b28b1f0ce44c ("btrfs: delayed-ref: Introduce better documented
delayed ref structures") introduced BTRFS_REF_LAST, which can be used
for sanity checking.

In btrfs_ref_type() there was an assertion

ASSERT(ref->type == BTRFS_REF_DATA || ref->type == BTRFS_REF_METADATA);

to validate the value. 

And there is currently no enum or switch to use the upper limit,
so let's remove it.

Signed-off-by: Yangtao Li <frank.li@...o.com>
---
 fs/btrfs/delayed-ref.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index f5ae880308d3..78cc23837610 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -262,7 +262,6 @@ enum btrfs_ref_type {
 	BTRFS_REF_NOT_SET,
 	BTRFS_REF_DATA,
 	BTRFS_REF_METADATA,
-	BTRFS_REF_LAST,
 } __packed;
 
 struct btrfs_ref {
-- 
2.39.0