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authorTrond Myklebust <Trond.Myklebust@netapp.com>2006-05-25 01:40:55 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-06-09 09:34:08 -0400
commitf1bb0b92ba2cdfffe6e437f7a7da53138cf08d52 (patch)
tree2870bd8f3e08b3b1b387f31713d965c3fcb7863f /fs
parent0d0b5cb36faf7002a11736032313f06d6f3d881c (diff)
downloadop-kernel-dev-f1bb0b92ba2cdfffe6e437f7a7da53138cf08d52.zip
op-kernel-dev-f1bb0b92ba2cdfffe6e437f7a7da53138cf08d52.tar.gz
NFS: Fix page cache revalidation
Fix up a bug in the handling of NFS_INO_REVAL_PAGECACHE: make sure that nfs_update_inode() clears it when we're sure we're not racing with other updates. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/inode.c19
1 files changed, 6 insertions, 13 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 4f12c57..eddd0e9 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1406,18 +1406,12 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
nfs_wcc_update_inode(inode, fattr);
if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0 &&
- nfsi->change_attr != fattr->change_attr) {
- nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
- if (!data_unstable)
- nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE;
- }
+ nfsi->change_attr != fattr->change_attr)
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
/* 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;
- }
+ if (!timespec_equal(&inode->i_mtime, &fattr->mtime))
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
cur_size = i_size_read(inode);
new_isize = nfs_size_to_loff_t(fattr->size);
@@ -1459,7 +1453,6 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
if ((fattr->valid & NFS_ATTR_FATTR) == 0)
return 0;
spin_lock(&inode->i_lock);
- nfsi->cache_validity &= ~NFS_INO_REVAL_PAGECACHE;
if (time_after(fattr->time_start, nfsi->last_updated))
status = nfs_update_inode(inode, fattr);
else
@@ -1484,7 +1477,7 @@ int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr)
spin_lock(&inode->i_lock);
if (unlikely((fattr->valid & NFS_ATTR_FATTR) == 0)) {
- nfsi->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS;
+ nfsi->cache_validity |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
goto out;
}
status = nfs_update_inode(inode, fattr);
@@ -1534,7 +1527,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
/* Are we racing with known updates of the metadata on the server? */
data_stable = nfs_verify_change_attribute(inode, fattr->time_start);
if (data_stable)
- nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME);
+ nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_ATIME);
/* Do atomic weak cache consistency updates */
nfs_wcc_update_inode(inode, fattr);
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