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Message-Id: <20190927111536.16455-4-jack@suse.cz> Date: Fri, 27 Sep 2019 13:15:24 +0200 From: Jan Kara <jack@...e.cz> To: <linux-ext4@...r.kernel.org> Cc: Ted Tso <tytso@....edu>, Jan Kara <jack@...e.cz> Subject: [PATCH 03/15] ext4: Do not iput inode under running transaction in ext4_mkdir() When ext4_mkdir() fails to add entry into directory, it ends up dropping freshly created inode under the running transaction and thus inode truncation happens under that transaction. That breaks assumptions that ext4_evict_inode() does not get called from a transaction context (although I'm not aware of any real issue) and is completely unnecessary. Just stop the transaction before dropping inode reference. Signed-off-by: Jan Kara <jack@...e.cz> --- fs/ext4/namei.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 129029534075..46e203f100de 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -2781,8 +2781,9 @@ static int ext4_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) clear_nlink(inode); unlock_new_inode(inode); ext4_mark_inode_dirty(handle, inode); + ext4_journal_stop(handle); iput(inode); - goto out_stop; + goto out_retry; } ext4_inc_count(handle, dir); ext4_update_dx_flag(dir); @@ -2796,6 +2797,7 @@ static int ext4_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) out_stop: if (handle) ext4_journal_stop(handle); +out_retry: if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries)) goto retry; return err; -- 2.16.4
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