From 7890203da2cb9b861dae9bdb88f882f3e03baec9 Mon Sep 17 00:00:00 2001 From: Kinglong Mee Date: Sun, 22 Mar 2015 22:17:20 +0800 Subject: NFSD: Fix bad update of layout in nfsd4_return_file_layout With return layout as, (seg is return layout, lo is record layout) seg->offset <= lo->offset and layout_end(seg) < layout_end(lo), nfsd should update lo's offset to seg's end, and, seg->offset > lo->offset and layout_end(seg) >= layout_end(lo), nfsd should update lo's end to seg's offset. Fixes: 9cf514ccfa ("nfsd: implement pNFS operations") Signed-off-by: Kinglong Mee Reviewed-by: Christoph Hellwig Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4layouts.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c index 6964613bad90..80e236bf79fc 100644 --- a/fs/nfsd/nfs4layouts.c +++ b/fs/nfsd/nfs4layouts.c @@ -440,15 +440,14 @@ nfsd4_return_file_layout(struct nfs4_layout *lp, struct nfsd4_layout_seg *seg, list_move_tail(&lp->lo_perstate, reaplist); return; } - end = seg->offset; + lo->offset = layout_end(seg); } else { /* retain the whole layout segment on a split. */ if (layout_end(seg) < end) { dprintk("%s: split not supported\n", __func__); return; } - - lo->offset = layout_end(seg); + end = seg->offset; } layout_update_len(lo, end); -- cgit v1.2.3