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NFS: Use the inode->i_version to cache NFSv4 change attribute information 

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2011-10-17 16:08:46 -07:00
parent 919066d690
commit a9a4a87a59
6 changed files with 14 additions and 15 deletions
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2
fs/nfs/delegation.c
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@ -240,7 +240,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
sizeof(delegation->stateid.data));
delegation->type = res->delegation_type;
delegation->maxsize = res->maxsize;
delegation->change_attr = nfsi->change_attr;
delegation->change_attr = inode->i_version;
delegation->cred = get_rpccred(cred);
delegation->inode = inode;
delegation->flags = 1<<NFS_DELEGATION_REFERENCED;

4
fs/nfs/fscache-index.c
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@ -212,7 +212,7 @@ static uint16_t nfs_fscache_inode_get_aux(const void *cookie_netfs_data,
auxdata.ctime = nfsi->vfs_inode.i_ctime;
if (NFS_SERVER(&nfsi->vfs_inode)->nfs_client->rpc_ops->version == 4)
auxdata.change_attr = nfsi->change_attr;
auxdata.change_attr = nfsi->vfs_inode.i_version;
if (bufmax > sizeof(auxdata))
bufmax = sizeof(auxdata);
@ -244,7 +244,7 @@ enum fscache_checkaux nfs_fscache_inode_check_aux(void *cookie_netfs_data,
auxdata.ctime = nfsi->vfs_inode.i_ctime;
if (NFS_SERVER(&nfsi->vfs_inode)->nfs_client->rpc_ops->version == 4)
auxdata.change_attr = nfsi->change_attr;
auxdata.change_attr = nfsi->vfs_inode.i_version;
if (memcmp(data, &auxdata, datalen) != 0)
return FSCACHE_CHECKAUX_OBSOLETE;

16
fs/nfs/inode.c
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@ -318,7 +318,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
memset(&inode->i_atime, 0, sizeof(inode->i_atime));
memset(&inode->i_mtime, 0, sizeof(inode->i_mtime));
memset(&inode->i_ctime, 0, sizeof(inode->i_ctime));
nfsi->change_attr = 0;
inode->i_version = 0;
inode->i_size = 0;
inode->i_nlink = 0;
inode->i_uid = -2;
@ -344,7 +344,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
if (fattr->valid & NFS_ATTR_FATTR_CHANGE)
nfsi->change_attr = fattr->change_attr;
inode->i_version = fattr->change_attr;
else if (nfs_server_capable(inode, NFS_CAP_CHANGE_ATTR))
nfsi->cache_validity |= NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_DATA;
@ -897,8 +897,8 @@ static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr
if ((fattr->valid & NFS_ATTR_FATTR_PRECHANGE)
&& (fattr->valid & NFS_ATTR_FATTR_CHANGE)
&& nfsi->change_attr == fattr->pre_change_attr) {
nfsi->change_attr = fattr->change_attr;
&& inode->i_version == fattr->pre_change_attr) {
inode->i_version = fattr->change_attr;
if (S_ISDIR(inode->i_mode))
nfsi->cache_validity |= NFS_INO_INVALID_DATA;
ret |= NFS_INO_INVALID_ATTR;
@ -952,7 +952,7 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
return -EIO;
if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 &&
nfsi->change_attr != fattr->change_attr)
inode->i_version != fattr->change_attr)
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
/* Verify a few of the more important attributes */
@ -1163,7 +1163,7 @@ int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fa
}
if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 &&
(fattr->valid & NFS_ATTR_FATTR_PRECHANGE) == 0) {
fattr->pre_change_attr = NFS_I(inode)->change_attr;
fattr->pre_change_attr = inode->i_version;
fattr->valid |= NFS_ATTR_FATTR_PRECHANGE;
}
if ((fattr->valid & NFS_ATTR_FATTR_CTIME) != 0 &&
@ -1244,13 +1244,13 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
/* More cache consistency checks */
if (fattr->valid & NFS_ATTR_FATTR_CHANGE) {
if (nfsi->change_attr != fattr->change_attr) {
if (inode->i_version != fattr->change_attr) {
dprintk("NFS: change_attr change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
nfsi->change_attr = fattr->change_attr;
inode->i_version = fattr->change_attr;
}
} else if (server->caps & NFS_CAP_CHANGE_ATTR)
invalid |= save_cache_validity;

4
fs/nfs/nfs4proc.c
View File

@ -753,9 +753,9 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
spin_lock(&dir->i_lock);
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
if (!cinfo->atomic || cinfo->before != dir->i_version)
nfs_force_lookup_revalidate(dir);
nfsi->change_attr = cinfo->after;
dir->i_version = cinfo->after;
spin_unlock(&dir->i_lock);
}

2
fs/nfs/write.c
View File

@ -390,7 +390,7 @@ static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
error = radix_tree_insert(&nfsi->nfs_page_tree, req->wb_index, req);
BUG_ON(error);
if (!nfsi->npages && nfs_have_delegation(inode, FMODE_WRITE))
nfsi->change_attr++;
inode->i_version++;
set_bit(PG_MAPPED, &req->wb_flags);
SetPagePrivate(req->wb_page);
set_page_private(req->wb_page, (unsigned long)req);

1
include/linux/nfs_fs.h
View File

@ -149,7 +149,6 @@ struct nfs_inode {
unsigned long read_cache_jiffies;
unsigned long attrtimeo;
unsigned long attrtimeo_timestamp;
__u64 change_attr; /* v4 only */
unsigned long attr_gencount;
/* "Generation counter" for the attribute cache. This is