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NFSv4: Ensure that we clear the NFS_OPEN_STATE flag when appropriate 

We should always clear it before initiating file recovery.
Also ensure that we clear it after a CLOSE and/or after TEST_STATEID fails.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2013-04-22 11:29:51 -04:00
parent 1dfd89af86
commit fd068b200f
1 changed files with 14 additions and 4 deletions
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18
fs/nfs/nfs4proc.c
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@ -1290,6 +1290,7 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
/* memory barrier prior to reading state->n_* */
clear_bit(NFS_DELEGATED_STATE, &state->flags);
clear_bit(NFS_OPEN_STATE, &state->flags);
smp_rmb();
if (state->n_rdwr != 0) {
clear_bit(NFS_O_RDWR_STATE, &state->flags);
@ -1893,6 +1894,7 @@ static int nfs41_check_open_stateid(struct nfs4_state *state)
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
clear_bit(NFS_O_RDWR_STATE, &state->flags);
clear_bit(NFS_OPEN_STATE, &state->flags);
}
return status;
}
@ -2208,11 +2210,19 @@ static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
fmode_t fmode)
{
spin_lock(&state->owner->so_lock);
if (!(fmode & FMODE_READ))
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
if (!(fmode & FMODE_WRITE))
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
clear_bit(NFS_O_RDWR_STATE, &state->flags);
switch (fmode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_WRITE:
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
case FMODE_READ:
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
break;
case 0:
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
clear_bit(NFS_OPEN_STATE, &state->flags);
}
spin_unlock(&state->owner->so_lock);
}