+static
+unsigned int do_layout_fetch_ds_ioerr(struct pnfs_layout_hdr *lo,
+ const struct pnfs_layout_range *range,
+ struct list_head *head,
+ unsigned int maxnum)
+{
+ struct nfs4_flexfile_layout *flo = FF_LAYOUT_FROM_HDR(lo);
+ struct inode *inode = lo->plh_inode;
+ struct nfs4_ff_layout_ds_err *err, *n;
+ unsigned int ret = 0;
+
+ spin_lock(&inode->i_lock);
+ list_for_each_entry_safe(err, n, &flo->error_list, list) {
+ if (!pnfs_is_range_intersecting(err->offset,
+ pnfs_end_offset(err->offset, err->length),
+ range->offset,
+ pnfs_end_offset(range->offset, range->length)))
+ continue;
+ if (!maxnum)
+ break;
+ list_move(&err->list, head);
+ maxnum--;
+ ret++;
+ }
+ spin_unlock(&inode->i_lock);
+ return ret;
+}
+
+unsigned int ff_layout_fetch_ds_ioerr(struct pnfs_layout_hdr *lo,
+ const struct pnfs_layout_range *range,
+ struct list_head *head,
+ unsigned int maxnum)
+{
+ unsigned int ret;
+
+ ret = do_layout_fetch_ds_ioerr(lo, range, head, maxnum);
+ /* If we're over the max, discard all remaining entries */
+ if (ret == maxnum) {
+ LIST_HEAD(discard);
+ do_layout_fetch_ds_ioerr(lo, range, &discard, -1);
+ ff_layout_free_ds_ioerr(&discard);
+ }
+ return ret;
+}
+