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Commit d943f2dd authored by Trond Myklebust's avatar Trond Myklebust Committed by Anna Schumaker
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NFSv4: Ignore change attribute invalidations if we hold a delegation 



Don't bother even recording an invalid change attribute if we hold a
delegation since we already know the state of our attribute cache.
We can rely on the fact that we will pick up a copy from the server
when we return the delegation.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 16e14375

fs/nfs/inode.c

+3 −0
Original line number Diff line number Diff line
@@ -200,7 +200,10 @@ bool nfs_check_cache_invalid(struct inode *inode, unsigned long flags) 
static void nfs_set_cache_invalid(struct inode *inode, unsigned long flags)

{

	struct nfs_inode *nfsi = NFS_I(inode);

	bool have_delegation = nfs_have_delegated_attributes(inode);



	if (have_delegation)

		flags &= ~(NFS_INO_INVALID_CHANGE|NFS_INO_REVAL_PAGECACHE);

	if (inode->i_mapping->nrpages == 0)

		flags &= ~NFS_INO_INVALID_DATA;

	nfsi->cache_validity |= flags;