@@ -585,9 +585,11 @@ void ceph_add_cap(struct inode *inode,
realmino);
if (realm) {
spin_lock(&realm->inodes_with_caps_lock);
- ci->i_snap_realm = realm;
list_add(&ci->i_snap_realm_item,
&realm->inodes_with_caps);
+ ci->i_snap_realm = realm;
+ if (realm->ino == ci->i_vino.ino)
+ realm->inode = inode;
spin_unlock(&realm->inodes_with_caps_lock);
} else {
pr_err("ceph_add_cap: couldn't find snap realm %llx\n",
@@ -554,6 +554,9 @@ void ceph_evict_inode(struct inode *inode)
dout(" dropping residual ref to snap realm %p\n", realm);
spin_lock(&realm->inodes_with_caps_lock);
list_del_init(&ci->i_snap_realm_item);
+ ci->i_snap_realm = NULL;
+ if (realm->ino == ci->i_vino.ino)
+ realm->inode = NULL;
spin_unlock(&realm->inodes_with_caps_lock);
ceph_put_snap_realm(mdsc, realm);
}
@@ -94,7 +94,6 @@ static struct ceph_snap_realm *get_quota_realm(struct ceph_mds_client *mdsc,
{
struct ceph_inode_info *ci = NULL;
struct ceph_snap_realm *realm, *next;
- struct ceph_vino vino;
struct inode *in;
bool has_quota;
@@ -108,13 +107,12 @@ static struct ceph_snap_realm *get_quota_realm(struct ceph_mds_client *mdsc,
pr_err_ratelimited("get_quota_realm: ino (%llx.%llx) "
"null i_snap_realm\n", ceph_vinop(inode));
while (realm) {
- vino.ino = realm->ino;
- vino.snap = CEPH_NOSNAP;
- in = ceph_find_inode(inode->i_sb, vino);
- if (!in) {
- pr_warn("Failed to find inode for %llu\n", vino.ino);
+ spin_lock(&realm->inodes_with_caps_lock);
+ in = realm->inode ? igrab(realm->inode) : NULL;
+ spin_unlock(&realm->inodes_with_caps_lock);
+ if (!in)
break;
- }
+
ci = ceph_inode(in);
has_quota = __ceph_has_any_quota(ci);
/* avoid calling iput_final() while holding mdsc->snap_rwsem */
@@ -173,7 +171,6 @@ static bool check_quota_exceeded(struct inode *inode, enum quota_check_op op,
struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
struct ceph_inode_info *ci;
struct ceph_snap_realm *realm, *next;
- struct ceph_vino vino;
struct inode *in;
u64 max, rvalue;
bool exceeded = false;
@@ -189,13 +186,12 @@ static bool check_quota_exceeded(struct inode *inode, enum quota_check_op op,
pr_err_ratelimited("check_quota_exceeded: ino (%llx.%llx) "
"null i_snap_realm\n", ceph_vinop(inode));
while (realm) {
- vino.ino = realm->ino;
- vino.snap = CEPH_NOSNAP;
- in = ceph_find_inode(inode->i_sb, vino);
- if (!in) {
- pr_warn("Failed to find inode for %llu\n", vino.ino);
+ spin_lock(&realm->inodes_with_caps_lock);
+ in = realm->inode ? igrab(realm->inode) : NULL;
+ spin_unlock(&realm->inodes_with_caps_lock);
+ if (!in)
break;
- }
+
ci = ceph_inode(in);
spin_lock(&ci->i_ceph_lock);
if (op == QUOTA_CHECK_MAX_FILES_OP) {
@@ -940,6 +940,8 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
&realm->inodes_with_caps);
oldrealm = ci->i_snap_realm;
ci->i_snap_realm = realm;
+ if (realm->ino == ci->i_vino.ino)
+ realm->inode = inode;
spin_unlock(&realm->inodes_with_caps_lock);
spin_unlock(&ci->i_ceph_lock);
@@ -761,6 +761,7 @@ struct ceph_readdir_cache_control {
*/
struct ceph_snap_realm {
u64 ino;
+ struct inode *inode;
atomic_t nref;
struct rb_node node;