linux-kernel - [PATCH] ubifs: Don't block RENAME

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Message-ID: <20170329151248.GA29118@axis.com>
Date:   Wed, 29 Mar 2017 17:12:48 +0200
From:   Jesper Nilsson <jesper.nilsson@...s.com>
To:     Richard Weinberger <richard@....at>,
        Artem Bityutskiy <dedekind1@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ubifs: Don't block RENAME_WHITEOUT flag in rename

The test does not allow the valid flag RENAME_WHITEOUT
and in fact, the calling function of do_rename already tests
the flags, so the test is unnecessary, allowing us to drop
it completely.

With this patch RENAME_WHITEOUT for overlayfs on ubifs works
as intended.

Signed-off-by: Jesper Nilsson <jesper.nilsson@...s.com>
---
 fs/ubifs/dir.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 30825d88..01ab543 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -1316,9 +1316,6 @@ static int do_rename(struct inode *old_dir, struct dentry *old_dentry,
 	unsigned int uninitialized_var(saved_nlink);
 	struct fscrypt_name old_nm, new_nm;
 
-	if (flags & ~RENAME_NOREPLACE)
-		return -EINVAL;
-
 	/*
 	 * Budget request settings: deletion direntry, new direntry, removing
 	 * the old inode, and changing old and new parent directory inodes.
-- 
2.1.4


/^JN - Jesper Nilsson
-- 
               Jesper Nilsson -- jesper.nilsson@...s.com