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authorNeilBrown <neilb@cse.unsw.edu.au>2005-06-23 22:02:58 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-24 00:06:28 -0700
commit496400014f22c4dbdbc1e89249a2feba46939708 (patch)
tree1d05116cef2e6ecfeef9fab0a733a9f2cf2a18e3 /fs/nfsd/nfs4xdr.c
parent0dd3c19212961453817f219cd6200981c38564bc (diff)
downloadop-kernel-dev-496400014f22c4dbdbc1e89249a2feba46939708.zip
op-kernel-dev-496400014f22c4dbdbc1e89249a2feba46939708.tar.gz
[PATCH] nfsd4: fix fh_expire_type
We're returning NFS4_FH_NOEXPIRE_WITH_OPEN | NFS4_FH_VOL_RENAME for the fh_expire_type attribute. This is incorrect: 1. The spec actually only allows NOEXPIRE_WITH_OPEN when VOLATILE_ANY is also set. 2. Filehandles for open files can expire, if the file is removed and there is a reboot. 3. Filehandles are only volatile on rename in the nosubtree check case. Unfortunately, there's no way to indicate that we only expire on remove. So our only choice is FH4_VOLATILE_ANY. Although it's redundant, we also set FH4_VOL_RENAME in the subtree check case, since subtreecheck does actually cause problems in practice and it seems possibly useful to give clients some way to distinguish that case. Fix a mispelled #define while we're at it. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/nfsd/nfs4xdr.c')
-rw-r--r--fs/nfsd/nfs4xdr.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 36a058a..0ae1467 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1366,7 +1366,10 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) {
if ((buflen -= 4) < 0)
goto out_resource;
- WRITE32( NFS4_FH_NOEXPIRE_WITH_OPEN | NFS4_FH_VOL_RENAME );
+ if (exp->ex_flags & NFSEXP_NOSUBTREECHECK)
+ WRITE32(NFS4_FH_VOLATILE_ANY);
+ else
+ WRITE32(NFS4_FH_VOLATILE_ANY|NFS4_FH_VOL_RENAME);
}
if (bmval0 & FATTR4_WORD0_CHANGE) {
/*
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