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Commit fb374d24 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFS: reduce the number of false cache invalidations. 



Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent c8d149f3

fs/nfs/inode.c

+2 −5
Original line number Original line Diff line number Diff line
@@ -1328,11 +1328,8 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat 




	cur_size = i_size_read(inode);

	cur_size = i_size_read(inode);

 	new_isize = nfs_size_to_loff_t(fattr->size);

 	new_isize = nfs_size_to_loff_t(fattr->size);

	if (cur_size != new_isize) {

	if (cur_size != new_isize && nfsi->npages == 0)

		nfsi->cache_validity |= NFS_INO_INVALID_ATTR;

		nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;

		if (nfsi->npages == 0)

			nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE;

	}





	/* Have any file permissions changed? */

	/* Have any file permissions changed? */

	if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)

	if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)