diff options
| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2014-10-13 16:56:12 +0200 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2014-10-13 17:04:02 +0200 |
| commit | b8fb9c30f25e45dab5d2cd310ab6913b6861d00f (patch) | |
| tree | d21470fdb513dd9a0f8160dbbdb9405a7751ce27 /fs/nfs | |
| parent | NFS: Fix an uninitialised pointer Oops in the writeback error path (diff) | |
| download | linux-b8fb9c30f25e45dab5d2cd310ab6913b6861d00f.tar.xz linux-b8fb9c30f25e45dab5d2cd310ab6913b6861d00f.zip | |
NFS: Fix a bogus warning in nfs_generic_pgio
It is OK for pageused == pagecount in the loop, as long as we don't add
another entry to the *pages array. Move the test so that it only triggers
in that case.
Reported-by: Steve Dickson <SteveD@redhat.com>
Fixes: bba5c1887a92 (nfs: disallow duplicate pages in pgio page vectors)
Cc: Weston Andros Adamson <dros@primarydata.com>
Cc: stable@vger.kernel.org # 3.16.x
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/pagelist.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 08085de879ed..ed0db61f8543 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -752,12 +752,11 @@ int nfs_generic_pgio(struct nfs_pageio_descriptor *desc, nfs_list_remove_request(req); nfs_list_add_request(req, &hdr->pages); - if (WARN_ON_ONCE(pageused >= pagecount)) - return nfs_pgio_error(desc, hdr); - if (!last_page || last_page != req->wb_page) { - *pages++ = last_page = req->wb_page; pageused++; + if (pageused > pagecount) + break; + *pages++ = last_page = req->wb_page; } } if (WARN_ON_ONCE(pageused != pagecount)) |