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

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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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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;