linux-kernel - [PATCH 16/20] get rid of DCACHE

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Message-Id: <20231124060644.576611-16-viro@zeniv.linux.org.uk>
Date:   Fri, 24 Nov 2023 06:06:40 +0000
From:   Al Viro <viro@...iv.linux.org.uk>
To:     linux-fsdevel@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Christian Brauner <brauner@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 16/20] get rid of DCACHE_GENOCIDE

... now that we never call d_genocide() other than from kill_litter_super()

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 fs/dcache.c            | 5 +----
 include/linux/dcache.h | 1 -
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/fs/dcache.c b/fs/dcache.c
index 1296a3fa4f93..440b46851f52 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -3196,10 +3196,7 @@ static enum d_walk_ret d_genocide_kill(void *data, struct dentry *dentry)
 		if (d_unhashed(dentry) || !dentry->d_inode)
 			return D_WALK_SKIP;
 
-		if (!(dentry->d_flags & DCACHE_GENOCIDE)) {
-			dentry->d_flags |= DCACHE_GENOCIDE;
-			dentry->d_lockref.count--;
-		}
+		dentry->d_lockref.count--;
 	}
 	return D_WALK_CONTINUE;
 }
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index b4324d47f249..981f529c6cb5 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -173,7 +173,6 @@ struct dentry_operations {
 #define DCACHE_DONTCACHE		BIT(7) /* Purge from memory on final dput() */
 
 #define DCACHE_CANT_MOUNT		BIT(8)
-#define DCACHE_GENOCIDE			BIT(9)
 #define DCACHE_SHRINK_LIST		BIT(10)
 
 #define DCACHE_OP_WEAK_REVALIDATE	BIT(11)
-- 
2.39.2