pNFS: Ignore non-recalled layouts in pnfs_layout_need_return()
If a layout has been recalled, then we should fire off a layoutreturn as
soon as all the layout segments that match the recall have been retired.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 17776ef..bf7f0b21 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1160,12 +1160,21 @@ static bool
pnfs_layout_need_return(struct pnfs_layout_hdr *lo)
{
struct pnfs_layout_segment *s;
+ enum pnfs_iomode iomode;
+ u32 seq;
if (!test_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags))
return false;
- /* Defer layoutreturn until all lsegs are done */
+ seq = lo->plh_return_seq;
+ iomode = lo->plh_return_iomode;
+
+ /* Defer layoutreturn until all recalled lsegs are done */
list_for_each_entry(s, &lo->plh_segs, pls_list) {
+ if (seq && pnfs_seqid_is_newer(s->pls_seq, seq))
+ continue;
+ if (iomode != IOMODE_ANY && s->pls_range.iomode != iomode)
+ continue;
if (test_bit(NFS_LSEG_LAYOUTRETURN, &s->pls_flags))
return false;
}
