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Wong" , Ted Tso , Jaegeuk Kim , , linux-f2fs-devel@lists.sourceforge.net, , Jan Kara , stable@vger.kernel.org Subject: [PATCH 1/6] ext4: Remove ext4 locking of moved directory Date: Thu, 25 May 2023 12:16:07 +0200 Message-Id: <20230525101624.15814-1-jack@suse.cz> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230525100654.15069-1-jack@suse.cz> References: <20230525100654.15069-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1467; i=jack@suse.cz; h=from:subject; bh=XV5CJdcSgiBkW1x4p8thTfL0TVuanLRiOHdfMG5wLnM=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBkbzVnIGpGZWT4yPVsBHE7bfA4OPMkWz6HswnwkkBL wMv1XtaJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCZG81ZwAKCRCcnaoHP2RA2djMB/ 9TuRgCE19tiF4YfdSdVgRs89YRrDmmE3NTXAbSIuixbqPMs/OBoKR+IrdEhocemPpvsbhKgYyq6pde GD08bNXqBYlC0N7WtEw16cb4LN/eI/F61YOFBg4KAWdPP2MW1hrfKqRKHgRiuRHCbdmZqLVok3aTFp 1Qr+X/ew4ZRXZQKMLFXhUsaRRQ+efZvQh7lYWVuVP0wKGwST8ZqSgemvm5nH7h/75mR768e1g414NX MYIQoHxmL5RXtLav4o/2MuPeb2D45T1AzoSUYrkMR8J/mTGAc+39zgKAT2B5r8H3rnw95ZrS6ps/N1 ALUuca31HdAz6ByRtuZyPuvC/Wt2sJ X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Remove locking of moved directory in ext4_rename2(). We will take care of it in VFS instead. This effectively reverts commit 0813299c586b ("ext4: Fix possible corruption when moving a directory") and followup fixes. CC: Ted Tso CC: stable@vger.kernel.org Signed-off-by: Jan Kara --- fs/ext4/namei.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 45b579805c95..0caf6c730ce3 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3834,19 +3834,10 @@ static int ext4_rename(struct mnt_idmap *idmap, struct inode *old_dir, return retval; } - /* - * We need to protect against old.inode directory getting converted - * from inline directory format into a normal one. - */ - if (S_ISDIR(old.inode->i_mode)) - inode_lock_nested(old.inode, I_MUTEX_NONDIR2); - old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, &old.inlined); - if (IS_ERR(old.bh)) { - retval = PTR_ERR(old.bh); - goto unlock_moved_dir; - } + if (IS_ERR(old.bh)) + return PTR_ERR(old.bh); /* * Check for inode number is _not_ due to possible IO errors. @@ -4043,10 +4034,6 @@ static int ext4_rename(struct mnt_idmap *idmap, struct inode *old_dir, brelse(old.bh); brelse(new.bh); -unlock_moved_dir: - if (S_ISDIR(old.inode->i_mode)) - inode_unlock(old.inode); - return retval; }