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authoralex chen <alex.chen@huawei.com>2015-11-05 18:44:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-05 19:34:48 -0800
commitb1529a41f777a48f95d4af29668b70ffe3360e1b (patch)
treee3005cd8b4943f854b4851cf5e95b285339efe2d
parent0986fe9b50f425ec81f25a1a85aaf3574b31d801 (diff)
downloadop-kernel-dev-b1529a41f777a48f95d4af29668b70ffe3360e1b.zip
op-kernel-dev-b1529a41f777a48f95d4af29668b70ffe3360e1b.tar.gz
ocfs2: should reclaim the inode if '__ocfs2_mknod_locked' returns an error
In ocfs2_mknod_locked if '__ocfs2_mknod_locke d' 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 <alex.chen@huawei.com> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/ocfs2/namei.c11
1 files changed, 10 insertions, 1 deletions
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,
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