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pnfs-obj: define per-inode private structure

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allocate and deallocate per-inode private pnfs_layout_hdr
in preparation for I/O implementation.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
This commit is contained in:
Benny Halevy
2011-05-22 19:51:48 +03:00
committed by Boaz Harrosh
parent 636fb9c89d
commit e51b841dd0
3 changed files with 46 additions and 0 deletions
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17
fs/nfs/objlayout/objlayout.h
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@ -45,6 +45,19 @@
#include <linux/pnfs_osd_xdr.h>
#include "../pnfs.h"
/*
* per-inode layout
*/
struct objlayout {
struct pnfs_layout_hdr pnfs_layout;
};
static inline struct objlayout *
OBJLAYOUT(struct pnfs_layout_hdr *lo)
{
return container_of(lo, struct objlayout, pnfs_layout);
}
/*
* Raid engine I/O API
*/
@ -66,6 +79,10 @@ extern void objlayout_put_deviceinfo(struct pnfs_osd_deviceaddr *deviceaddr);
/*
* exported generic objects function vectors
*/
extern struct pnfs_layout_hdr *objlayout_alloc_layout_hdr(struct inode *, gfp_t gfp_flags);
extern void objlayout_free_layout_hdr(struct pnfs_layout_hdr *);
extern struct pnfs_layout_segment *objlayout_alloc_lseg(
struct pnfs_layout_hdr *,
struct nfs4_layoutget_res *,