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NFS41: add pg_layout_private to nfs_pageio_descriptor

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To allow layout driver to pass private information around
pg_init/pg_doio.

Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Peng Tao
2012-08-02 15:36:09 +03:00
committed by Trond Myklebust
parent 21d1f58aed
commit f616638409
3 changed files with 4 additions and 0 deletions
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include/linux/nfs_page.h
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@@ -69,6 +69,7 @@ struct nfs_pageio_descriptor {
const struct nfs_pgio_completion_ops *pg_completion_ops;
struct pnfs_layout_segment *pg_lseg;
struct nfs_direct_req *pg_dreq;
void *pg_layout_private;
};
#define NFS_WBACK_BUSY(req) (test_bit(PG_BUSY,&(req)->wb_flags))