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pnfs: support for non-rpc layout drivers

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Non-rpc layout driver such as for objects and blocks
implement their own I/O path and error handling logic.
Therefore bypass NFS-based error handling for these layout drivers.

[fix lseg ref-count bugs, and null de-refs]
[Fall out from: non-rpc layout drivers]
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
[get rid of PNFS_USE_RPC_CODE]
[get rid of __nfs4_write_done_cb]
[revert useless change in nfs4_write_done_cb]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
This commit is contained in:
Benny Halevy
2011-05-22 19:52:03 +03:00
committed by Boaz Harrosh
parent e51b841dd0
commit d20581aa4b
5 changed files with 62 additions and 4 deletions
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13
fs/nfs/nfs4proc.c
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@@ -3175,6 +3175,11 @@ static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
return err;
}
void __nfs4_read_done_cb(struct nfs_read_data *data)
{
nfs_invalidate_atime(data->inode);
}
static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
{
struct nfs_server *server = NFS_SERVER(data->inode);
@@ -3184,7 +3189,7 @@ static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
return -EAGAIN;
}
nfs_invalidate_atime(data->inode);
__nfs4_read_done_cb(data);
if (task->tk_status > 0)
renew_lease(server, data->timestamp);
return 0;
@@ -3198,7 +3203,8 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
if (!nfs4_sequence_done(task, &data->res.seq_res))
return -EAGAIN;
return data->read_done_cb(task, data);
return data->read_done_cb ? data->read_done_cb(task, data) :
nfs4_read_done_cb(task, data);
}
static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
@@ -3243,7 +3249,8 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
{
if (!nfs4_sequence_done(task, &data->res.seq_res))
return -EAGAIN;
return data->write_done_cb(task, data);
return data->write_done_cb ? data->write_done_cb(task, data) :
nfs4_write_done_cb(task, data);
}
/* Reset the the nfs_write_data to send the write to the MDS. */