diff options
Diffstat (limited to 'fs/nfs/pnfs.c')
| -rw-r--r-- | fs/nfs/pnfs.c | 5 |
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; |