linux-kernel - [PATCH RESEND 1/2] vfs: remove unused d_backing

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Message-Id: <20230930100156.24014-1-haifeng.xu@shopee.com>
Date:   Sat, 30 Sep 2023 10:01:55 +0000
From:   Haifeng Xu <haifeng.xu@...pee.com>
To:     akpm@...ux-foundation.org
Cc:     viro@...iv.linux.org.uk, mszeredi@...hat.com,
        bigeasy@...utronix.de, mcgrof@...nel.org, xiubli@...hat.com,
        linux-kernel@...r.kernel.org, Haifeng Xu <haifeng.xu@...pee.com>
Subject: [PATCH RESEND 1/2] vfs: remove unused d_backing_dentry() function

d_backing_dentry() isn't used by anyone, so remove it.

Signed-off-by: Haifeng Xu <haifeng.xu@...pee.com>
Reviewed-by: Al Viro <viro@...iv.linux.org.uk>
---
 include/linux/dcache.h | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 6b351e009f59..13023c7211d6 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -545,21 +545,6 @@ static inline struct inode *d_backing_inode(const struct dentry *upper)
 	return inode;
 }
 
-/**
- * d_backing_dentry - Get upper or lower dentry we should be using
- * @upper: The upper layer
- *
- * This is the helper that should be used to get the dentry of the inode that
- * will be used if this dentry were opened as a file.  It may be the upper
- * dentry or it may be a lower dentry pinned by the upper.
- *
- * Normal filesystems should not use this to access their own dentries.
- */
-static inline struct dentry *d_backing_dentry(struct dentry *upper)
-{
-	return upper;
-}
-
 /**
  * d_real - Return the real dentry
  * @dentry: the dentry to query
-- 
2.25.1