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NFS: Fix incorrect size revalidation when holding a delegation 

We should only care about checking the attributes if the page cache
is marked as dubious (using NFS_INO_REVAL_PAGECACHE) and the
NFS_INO_REVAL_FORCED flag is set.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2016-12-04 18:08:40 -05:00
parent 10727772b9
commit 9310b224f2
1 changed files with 4 additions and 1 deletions
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5
fs/nfs/file.c
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@ -102,8 +102,11 @@ static int nfs_revalidate_file_size(struct inode *inode, struct file *filp)
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_inode *nfsi = NFS_I(inode);
const unsigned long force_reval = NFS_INO_REVAL_PAGECACHE|NFS_INO_REVAL_FORCED;
unsigned long cache_validity = nfsi->cache_validity;
if (nfs_have_delegated_attributes(inode))
if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) &&
(cache_validity & force_reval) != force_reval)
goto out_noreval;
if (filp->f_flags & O_DIRECT)