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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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2
include/linux/nfs_xdr.h
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@ -1087,6 +1087,7 @@ struct nfs_read_data {
const struct rpc_call_ops *mds_ops;
int (*read_done_cb) (struct rpc_task *task, struct nfs_read_data *data);
__u64 mds_offset;
int pnfs_error;
struct page *page_array[NFS_PAGEVEC_SIZE];
};
@ -1112,6 +1113,7 @@ struct nfs_write_data {
unsigned long timestamp; /* For lease renewal */
#endif
__u64 mds_offset; /* Filelayout dense stripe */
int pnfs_error;
struct page *page_array[NFS_PAGEVEC_SIZE];
};