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Revert "ceph: fix dentry leak in splice_dentry()"

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This reverts commit 8b8f53af1ed9df88a4c0fbfdf3db58f62060edf3.

splice_dentry() is used by three places. For two places, req->r_dentry
is passed to splice_dentry(). In the case of error, req->r_dentry does
not get updated. So splice_dentry() should not drop reference.

Cc: stable@vger.kernel.org # 4.18+
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Yan, Zheng 2018-09-27 21:16:05 +08:00 committed by Ilya Dryomov
parent 5da207993e
commit efe328230d
1 changed files with 6 additions and 2 deletions
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8
fs/ceph/inode.c
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@ -1132,8 +1132,12 @@ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in)
if (IS_ERR(realdn)) {
pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n",
PTR_ERR(realdn), dn, in, ceph_vinop(in));
dput(dn);
dn = realdn; /* note realdn contains the error */
dn = realdn;
/*
* Caller should release 'dn' in the case of error.
* If 'req->r_dentry' is passed to this function,
* caller should leave 'req->r_dentry' untouched.
*/
goto out;
} else if (realdn) {
dout("dn %p (%d) spliced with %p (%d) "