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Two fixups for CephFS snapshot-handling patches in -rc1. 

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Merge tag 'ceph-for-4.14-rc4' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "Two fixups for CephFS snapshot-handling patches in -rc1"

* tag 'ceph-for-4.14-rc4' of git://github.com/ceph/ceph-client:
  ceph: fix __choose_mds() for LSSNAP request
  ceph: properly queue cap snap for newly created snap realm
This commit is contained in:
Linus Torvalds 2017-10-06 09:01:45 -07:00
parent 8d4ef4e15e 38f340ccdf
commit b77779b93d
2 changed files with 9 additions and 10 deletions
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11
fs/ceph/mds_client.c
View File

@ -734,12 +734,13 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
inode = req->r_inode;
ihold(inode);
} else {
/* req->r_dentry is non-null for LSSNAP request.
* fall-thru */
WARN_ON_ONCE(!req->r_dentry);
/* req->r_dentry is non-null for LSSNAP request */
rcu_read_lock();
inode = get_nonsnap_parent(req->r_dentry);
rcu_read_unlock();
dout("__choose_mds using snapdir's parent %p\n", inode);
}
}
if (!inode && req->r_dentry) {
} else if (req->r_dentry) {
/* ignore race with rename; old or new d_parent is okay */
struct dentry *parent;
struct inode *dir;

8
fs/ceph/snap.c
View File

@ -374,12 +374,10 @@ static int build_snap_context(struct ceph_snap_realm *realm,
realm->ino, realm, snapc, snapc->seq,
(unsigned int) snapc->num_snaps);
if (realm->cached_context) {
ceph_put_snap_context(realm->cached_context);
/* queue realm for cap_snap creation */
list_add_tail(&realm->dirty_item, dirty_realms);
}
ceph_put_snap_context(realm->cached_context);
realm->cached_context = snapc;
/* queue realm for cap_snap creation */
list_add_tail(&realm->dirty_item, dirty_realms);
return 0;
fail: