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NFSv4: Force a post-op attribute update when holding a delegation 

If the ctime or mtime or change attribute have changed because
of an operation we initiated, we should make sure that we force
an attribute update. However we do not want to mark the page cache
for revalidation.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: stable@vger.kernel.org # v4.0+
This commit is contained in:
Trond Myklebust 2015-08-20 18:56:07 -05:00
parent dd52128afd
commit aaae3f00d3
1 changed files with 7 additions and 0 deletions
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7
fs/nfs/inode.c
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@ -1477,6 +1477,13 @@ static int nfs_post_op_update_inode_locked(struct inode *inode, struct nfs_fattr
{
unsigned long invalid = NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
/*
* Don't revalidate the pagecache if we hold a delegation, but do
* force an attribute update
*/
if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ))
invalid = NFS_INO_INVALID_ATTR|NFS_INO_REVAL_FORCED;
if (S_ISDIR(inode->i_mode))
invalid |= NFS_INO_INVALID_DATA;
nfs_set_cache_invalid(inode, invalid);