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authorTrond Myklebust <Trond.Myklebust@netapp.com>2006-03-20 13:44:07 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-03-20 13:44:07 -0500
commitca62b9c3f7b8679ada4de94d2ab7098c6860c3d7 (patch)
treec4eb7adef74b2ccdf5b928f698d80f6cdcb6f708 /fs/nfs/inode.c
parent755c1e20cd2ad56e5c567fa05769eb98a3eef72b (diff)
downloadop-kernel-dev-ca62b9c3f7b8679ada4de94d2ab7098c6860c3d7.zip
op-kernel-dev-ca62b9c3f7b8679ada4de94d2ab7098c6860c3d7.tar.gz
NFSv4: Don't invalidate cached attributes if change attribute is unchanged
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/inode.c')
-rw-r--r--fs/nfs/inode.c44
1 files changed, 24 insertions, 20 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 5746dc8..0e1ef97 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1299,34 +1299,35 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
if ((fattr->valid & NFS_ATTR_FATTR) == 0)
return 0;
+ /* Has the inode gone and changed behind our back? */
+ if (nfsi->fileid != fattr->fileid
+ || (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
+ return -EIO;
+ }
+
/* Are we in the process of updating data on the server? */
data_unstable = nfs_caches_unstable(inode);
/* Do atomic weak cache consistency updates */
nfs_wcc_update_inode(inode, fattr);
- if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0 &&
- nfsi->change_attr != fattr->change_attr) {
+ if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0) {
+ if (nfsi->change_attr == fattr->change_attr)
+ goto out;
nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (!data_unstable)
nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE;
}
- /* Has the inode gone and changed behind our back? */
- if (nfsi->fileid != fattr->fileid
- || (inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT)) {
- return -EIO;
- }
-
- cur_size = i_size_read(inode);
- new_isize = nfs_size_to_loff_t(fattr->size);
-
/* Verify a few of the more important attributes */
if (!timespec_equal(&inode->i_mtime, &fattr->mtime)) {
nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (!data_unstable)
nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE;
}
+
+ cur_size = i_size_read(inode);
+ new_isize = nfs_size_to_loff_t(fattr->size);
if (cur_size != new_isize) {
nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (nfsi->npages == 0)
@@ -1343,6 +1344,7 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
if (inode->i_nlink != fattr->nlink)
nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
+out:
if (!timespec_equal(&inode->i_atime, &fattr->atime))
nfsi->cache_validity |= NFS_INO_INVALID_ATIME;
@@ -1481,15 +1483,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
nfsi->cache_change_attribute = jiffies;
}
- if ((fattr->valid & NFS_ATTR_FATTR_V4)
- && nfsi->change_attr != fattr->change_attr) {
- dprintk("NFS: change_attr change on server for file %s/%ld\n",
- inode->i_sb->s_id, inode->i_ino);
- nfsi->change_attr = fattr->change_attr;
- invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
- nfsi->cache_change_attribute = jiffies;
- }
-
/* If ctime has changed we should definitely clear access+acl caches */
if (!timespec_equal(&inode->i_ctime, &fattr->ctime)) {
invalid |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
@@ -1519,6 +1512,17 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
inode->i_blksize = fattr->du.nfs2.blocksize;
}
+ if ((fattr->valid & NFS_ATTR_FATTR_V4)) {
+ if (nfsi->change_attr != fattr->change_attr) {
+ dprintk("NFS: change_attr change on server for file %s/%ld\n",
+ inode->i_sb->s_id, inode->i_ino);
+ nfsi->change_attr = fattr->change_attr;
+ invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+ nfsi->cache_change_attribute = jiffies;
+ } else
+ invalid &= ~(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA);
+ }
+
/* Update attrtimeo value if we're out of the unstable period */
if (invalid & NFS_INO_INVALID_ATTR) {
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
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