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[PATCH] NFS: Ensure that fstat() always returns the correct mtime

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Even if the file is open for writes.

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2005-06-22 17:16:30 +00:00
parent 7d52e86274
commit fe51beecc5
3 changed files with 39 additions and 14 deletions
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24
fs/nfs/inode.c
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@ -620,9 +620,9 @@ nfs_zap_caches(struct inode *inode)
memset(NFS_COOKIEVERF(inode), 0, sizeof(NFS_COOKIEVERF(inode)));
if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))
nfsi->flags |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
nfsi->flags |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
else
nfsi->flags |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
nfsi->flags |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
}
static void nfs_zap_acl_cache(struct inode *inode)
@ -1055,6 +1055,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
goto out;
}
flags = nfsi->flags;
nfsi->flags &= ~NFS_INO_REVAL_PAGECACHE;
/*
* We may need to keep the attributes marked as invalid if
* we raced with nfs_end_attr_update().
@ -1187,8 +1188,11 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
if ((fattr->valid & NFS_ATTR_PRE_CHANGE) != 0
&& nfsi->change_attr == fattr->pre_change_attr)
nfsi->change_attr = fattr->change_attr;
if (!data_unstable && nfsi->change_attr != fattr->change_attr)
if (nfsi->change_attr != fattr->change_attr) {
nfsi->flags |= NFS_INO_INVALID_ATTR;
if (!data_unstable)
nfsi->flags |= NFS_INO_REVAL_PAGECACHE;
}
}
if ((fattr->valid & NFS_ATTR_FATTR) == 0)
@ -1211,12 +1215,16 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
}
/* Verify a few of the more important attributes */
if (!data_unstable) {
if (!timespec_equal(&inode->i_mtime, &fattr->mtime)
|| cur_size != new_isize)
nfsi->flags |= NFS_INO_INVALID_ATTR;
} else if (new_isize != cur_size && nfsi->npages == 0)
if (!timespec_equal(&inode->i_mtime, &fattr->mtime)) {
nfsi->flags |= NFS_INO_INVALID_ATTR;
if (!data_unstable)
nfsi->flags |= NFS_INO_REVAL_PAGECACHE;
}
if (cur_size != new_isize) {
nfsi->flags |= NFS_INO_INVALID_ATTR;
if (nfsi->npages == 0)
nfsi->flags |= NFS_INO_REVAL_PAGECACHE;
}
/* Have any file permissions changed? */
if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)