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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-04-22 11:29:51 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-04-22 11:29:51 -0400
commitfd068b200fb86e8fa52368e6f6088d2ab297a5d7 (patch)
treef2b75692b49b7f263dd0a27d4186b111bc4d24b0 /fs/nfs
parent1dfd89af8697a299e7982ae740d4695ecd917eef (diff)
downloadop-kernel-dev-fd068b200fb86e8fa52368e6f6088d2ab297a5d7.zip
op-kernel-dev-fd068b200fb86e8fa52368e6f6088d2ab297a5d7.tar.gz
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>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/nfs4proc.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index ed01a66..c1314491 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -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_RDWR_STATE, &state->flags);
+ switch (fmode & (FMODE_READ|FMODE_WRITE)) {
+ case FMODE_WRITE:
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
- if (!(fmode & FMODE_WRITE))
+ break;
+ case FMODE_READ:
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
- clear_bit(NFS_O_RDWR_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);
}
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