From mboxrd@z Thu Jan 1 00:00:00 1970 From: alex chen Date: Wed, 14 Oct 2015 11:23:03 +0800 Subject: [Ocfs2-devel] [PATCH] ocfs2: should reclaim the inode if '__ocfs2_mknod_locked' returns an error Message-ID: <561DCA97.1010709@huawei.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ocfs2-devel@oss.oracle.com In ocfs2_mknod_locked if '__ocfs2_mknod_locked' returns an error, we should reclaim the inode successfully claimed above, otherwise, the inode never be reused. The case is described below: ocfs2_mknod ocfs2_mknod_locked ocfs2_claim_new_inode Successfully claim the inode __ocfs2_mknod_locked ocfs2_journal_access_di Failed because of -ENOMEM or other reasons, the inode lockres has not been initialized yet. iput(inode) ocfs2_evict_inode ocfs2_delete_inode ocfs2_inode_lock ocfs2_inode_lock_full_nested __ocfs2_cluster_lock Return -EINVAL because of the inode lockres has not been initialized. So the following operations are not performed ocfs2_wipe_inode ocfs2_remove_inode ocfs2_free_dinode ocfs2_free_suballoc_bits Signed-off-by: Alex Chen Reviewed-by: Joseph Qi --- fs/ocfs2/namei.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 1206392..3b48ac2 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -655,9 +655,18 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb, return status; } - return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, + status = __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, parent_fe_bh, handle, inode_ac, fe_blkno, suballoc_loc, suballoc_bit); + if (status < 0) { + u64 bg_blkno = ocfs2_which_suballoc_group(fe_blkno, suballoc_bit); + int tmp = ocfs2_free_suballoc_bits(handle, inode_ac->ac_inode, + inode_ac->ac_bh, suballoc_bit, bg_blkno, 1); + if (tmp) + mlog_errno(tmp); + } + + return status; } static int ocfs2_mkdir(struct inode *dir, -- 1.8.4.3