Commit 783b194c authored by Trond Myklebust's avatar Trond Myklebust Committed by Anna Schumaker

NFS: Don't redirty the attribute cache in nfs_wcc_update_inode()

If we received weak cache consistency data from the server, then those
attributes are up to date, and there is no reason to mark them as
dirty in the attribute cache.
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent 8619ddd0
......@@ -1303,24 +1303,20 @@ static bool nfs_file_has_buffered_writers(struct nfs_inode *nfsi)
return nfs_file_has_writers(nfsi) && nfs_file_io_is_buffered(nfsi);
}
static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
unsigned long ret = 0;
if ((fattr->valid & NFS_ATTR_FATTR_PRECHANGE)
&& (fattr->valid & NFS_ATTR_FATTR_CHANGE)
&& inode_eq_iversion_raw(inode, fattr->pre_change_attr)) {
inode_set_iversion_raw(inode, fattr->change_attr);
if (S_ISDIR(inode->i_mode))
nfs_set_cache_invalid(inode, NFS_INO_INVALID_DATA);
ret |= NFS_INO_INVALID_ATTR;
}
/* If we have atomic WCC data, we may update some attributes */
if ((fattr->valid & NFS_ATTR_FATTR_PRECTIME)
&& (fattr->valid & NFS_ATTR_FATTR_CTIME)
&& timespec_equal(&inode->i_ctime, &fattr->pre_ctime)) {
memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
ret |= NFS_INO_INVALID_ATTR;
}
if ((fattr->valid & NFS_ATTR_FATTR_PREMTIME)
......@@ -1329,17 +1325,13 @@ static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr
memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
if (S_ISDIR(inode->i_mode))
nfs_set_cache_invalid(inode, NFS_INO_INVALID_DATA);
ret |= NFS_INO_INVALID_ATTR;
}
if ((fattr->valid & NFS_ATTR_FATTR_PRESIZE)
&& (fattr->valid & NFS_ATTR_FATTR_SIZE)
&& i_size_read(inode) == nfs_size_to_loff_t(fattr->pre_size)
&& !nfs_have_writebacks(inode)) {
i_size_write(inode, nfs_size_to_loff_t(fattr->size));
ret |= NFS_INO_INVALID_ATTR;
}
return ret;
}
/**
......@@ -1789,7 +1781,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
| NFS_INO_REVAL_PAGECACHE);
/* Do atomic weak cache consistency updates */
invalid |= nfs_wcc_update_inode(inode, fattr);
nfs_wcc_update_inode(inode, fattr);
if (pnfs_layoutcommit_outstanding(inode)) {
nfsi->cache_validity |= save_cache_validity & NFS_INO_INVALID_ATTR;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment