static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
{
+ struct nfs_client *clp = state->owner->so_client;
+ struct nfs_inode *nfsi = NFS_I(state->inode);
struct nfs_seqid *seqid;
struct nfs4_lock_state *lsp;
struct rpc_task *task;
status = nfs4_set_lock_state(state, request);
/* Unlock _before_ we do the RPC call */
request->fl_flags |= FL_EXISTS;
- if (do_vfs_lock(request->fl_file, request) == -ENOENT)
+ down_read(&clp->cl_sem);
+ down_read(&nfsi->rwsem);
+ if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
+ up_read(&nfsi->rwsem);
+ up_read(&clp->cl_sem);
goto out;
+ }
+ up_read(&nfsi->rwsem);
+ up_read(&clp->cl_sem);
if (status != 0)
goto out;
/* Is this a delegated lock? */
static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
struct nfs_client *clp = state->owner->so_client;
+ struct nfs_inode *nfsi = NFS_I(state->inode);
unsigned char fl_flags = request->fl_flags;
int status;
if (status < 0)
goto out;
down_read(&clp->cl_sem);
+ down_read(&nfsi->rwsem);
if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
- struct nfs_inode *nfsi = NFS_I(state->inode);
/* Yes: cache locks! */
- down_read(&nfsi->rwsem);
/* ...but avoid races with delegation recall... */
- if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
- request->fl_flags = fl_flags & ~FL_SLEEP;
- status = do_vfs_lock(request->fl_file, request);
- up_read(&nfsi->rwsem);
- goto out_unlock;
- }
- up_read(&nfsi->rwsem);
+ request->fl_flags = fl_flags & ~FL_SLEEP;
+ status = do_vfs_lock(request->fl_file, request);
+ goto out_unlock;
}
status = _nfs4_do_setlk(state, cmd, request, 0);
if (status != 0)
if (do_vfs_lock(request->fl_file, request) < 0)
printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__);
out_unlock:
+ up_read(&nfsi->rwsem);
up_read(&clp->cl_sem);
out:
request->fl_flags = fl_flags;
static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_recovery_ops *ops)
{
struct inode *inode = state->inode;
+ struct nfs_inode *nfsi = NFS_I(inode);
struct file_lock *fl;
int status = 0;
+ down_write(&nfsi->rwsem);
for (fl = inode->i_flock; fl != NULL; fl = fl->fl_next) {
if (!(fl->fl_flags & (FL_POSIX|FL_FLOCK)))
continue;
goto out_err;
}
}
+ up_write(&nfsi->rwsem);
return 0;
out_err:
+ up_write(&nfsi->rwsem);
return status;
}