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NFS: Fix the ESTALE "revalidation" in _nfs_revalidate_inode() 

For one thing, the test NFS_ATTRTIMEO() == 0 makes no sense: we're
testing whether or not the cache timeout length is zero, which is totally
unrelated to the issue of whether or not we trust the file staleness.

Secondly, we do not want to retry the GETATTR once a file has been declared
stale by the server: we rather want to discard that inode as soon as
possible, since there are broken servers still in use out there that reuse
filehandles on new files.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2007-09-28 19:11:33 -04:00
parent 8850df999c
commit 7fdc49c4e4
1 changed files with 4 additions and 10 deletions
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14
fs/nfs/inode.c
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@ -607,16 +607,10 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
status = nfs_wait_on_inode(inode);
if (status < 0)
goto out;
if (NFS_STALE(inode)) {
status = -ESTALE;
/* Do we trust the cached ESTALE? */
if (NFS_ATTRTIMEO(inode) != 0) {
if (nfsi->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME)) {
/* no */
} else
goto out;
}
}
status = -ESTALE;
if (NFS_STALE(inode))
goto out;
status = NFS_PROTO(inode)->getattr(server, NFS_FH(inode), &fattr);
if (status != 0) {