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Diffstat (limited to 'fs/nfs/pnfs.c')
-rw-r--r--fs/nfs/pnfs.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 171662114fdd..00b128241746 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -619,6 +619,51 @@ out_err_free:
return NULL;
}
+/* Initiates a LAYOUTRETURN(FILE) */
+int
+_pnfs_return_layout(struct inode *ino)
+{
+ struct pnfs_layout_hdr *lo = NULL;
+ struct nfs_inode *nfsi = NFS_I(ino);
+ LIST_HEAD(tmp_list);
+ struct nfs4_layoutreturn *lrp;
+ nfs4_stateid stateid;
+ int status = 0;
+
+ dprintk("--> %s\n", __func__);
+
+ spin_lock(&ino->i_lock);
+ lo = nfsi->layout;
+ if (!lo || !mark_matching_lsegs_invalid(lo, &tmp_list, NULL)) {
+ spin_unlock(&ino->i_lock);
+ dprintk("%s: no layout segments to return\n", __func__);
+ goto out;
+ }
+ stateid = nfsi->layout->plh_stateid;
+ /* Reference matched in nfs4_layoutreturn_release */
+ get_layout_hdr(lo);
+ spin_unlock(&ino->i_lock);
+ pnfs_free_lseg_list(&tmp_list);
+
+ WARN_ON(test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags));
+
+ lrp = kzalloc(sizeof(*lrp), GFP_KERNEL);
+ if (unlikely(lrp == NULL)) {
+ status = -ENOMEM;
+ goto out;
+ }
+
+ lrp->args.stateid = stateid;
+ lrp->args.layout_type = NFS_SERVER(ino)->pnfs_curr_ld->id;
+ lrp->args.inode = ino;
+ lrp->clp = NFS_SERVER(ino)->nfs_client;
+
+ status = nfs4_proc_layoutreturn(lrp);
+out:
+ dprintk("<-- %s status: %d\n", __func__, status);
+ return status;
+}
+
bool pnfs_roc(struct inode *ino)
{
struct pnfs_layout_hdr *lo;