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NFSv4: Fix open recovery 

NFSv4 open recovery is currently broken: since we do not clear the
state->flags states before attempting recovery, we end up with the
'can_open_cached()' function triggering. This again leads to no OPEN call
being put on the wire.

Reported-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
This commit is contained in:
Trond Myklebust 2010-10-04 17:59:08 -04:00
parent bc4866b6e0
commit b0ed9dbc24
1 changed files with 3 additions and 0 deletions
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3
fs/nfs/nfs4proc.c
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@ -1118,6 +1118,7 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
clear_bit(NFS_DELEGATED_STATE, &state->flags);
smp_rmb();
if (state->n_rdwr != 0) {
clear_bit(NFS_O_RDWR_STATE, &state->flags);
ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
if (ret != 0)
return ret;
@ -1125,6 +1126,7 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
return -ESTALE;
}
if (state->n_wronly != 0) {
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
if (ret != 0)
return ret;
@ -1132,6 +1134,7 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
return -ESTALE;
}
if (state->n_rdonly != 0) {
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
if (ret != 0)
return ret;