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pnfs: layoutget, layoutreturn rpcs no longer operate on shared data

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LAYOUTGET xdr now supports decoding of multiple layout segments, which are returned in a list with pnfs_layoutget_res_ok
LAYOUTRETURN no longer operates on an existing pnfs_file_layout.  it now takes a copy of the layout stateid, and returns the new stateid with pnfs_layoutreturn_res

Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
This commit is contained in:
Casey Bodley 2011-03-09 11:44:33 -05:00 • committed by unknown
parent 248c14b6ae
commit 159ad405bb
3 changed files with 114 additions and 81 deletions
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16
daemon/nfs41_ops.h
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@ -796,14 +796,17 @@ typedef struct __pnfs_layoutget_args {
} pnfs_layoutget_args;
typedef struct __pnfs_layoutget_res_ok {
pnfs_file_layout *layout;
bool_t return_on_close;
stateid4 stateid;
uint32_t count;
struct list_entry layouts; /* list of pnfs_layouts */
} pnfs_layoutget_res_ok;
typedef struct __pnfs_layoutget_res {
enum nfsstat4 status;
union {
/* case NFS4_OK: */
pnfs_layoutget_res_ok res_ok;
pnfs_layoutget_res_ok *res_ok;
/* case NFS4ERR_LAYOUTTRYLATER: */
bool_t will_signal_layout_avail;
/* default: void; */
@ -1086,7 +1089,7 @@ enum nfsstat4 pnfs_rpc_layoutget(
IN enum pnfs_iomode iomode,
IN uint64_t offset,
IN uint64_t length,
OUT pnfs_file_layout *layout);
OUT pnfs_layoutget_res_ok *layoutget_res);
enum nfsstat4 pnfs_rpc_layoutcommit(
IN nfs41_session *session,
@ -1100,7 +1103,12 @@ enum nfsstat4 pnfs_rpc_layoutcommit(
enum nfsstat4 pnfs_rpc_layoutreturn(
IN nfs41_session *session,
IN nfs41_path_fh *file,
IN pnfs_file_layout *layout);
IN enum pnfs_layout_type type,
IN enum pnfs_iomode iomode,
IN uint64_t offset,
IN uint64_t length,
IN stateid4 *stateid,
OUT pnfs_layoutreturn_res *layoutreturn_res);
enum nfsstat4 pnfs_rpc_getdeviceinfo(
IN nfs41_session *session,