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-rw-r--r--fs/nfs/pnfs.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index d5dc97f72b30..717cd95a0306 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -2046,6 +2046,11 @@ static void _lgopen_prepare_attached(struct nfs4_opendata *data,
struct nfs4_layoutget *lgp;
struct pnfs_layout_hdr *lo;
+ /* Heuristic: don't send layoutget if we have cached data */
+ if (rng.iomode == IOMODE_READ &&
+ (i_size_read(ino) == 0 || ino->i_mapping->nrpages != 0))
+ return;
+
lo = _pnfs_grab_empty_layout(ino, ctx);
if (!lo)
return;