blocklayout.h File Reference

#include <linux/device-mapper.h>
#include <linux/nfs_fs.h>
#include <linux/sunrpc/rpc_pipe_fs.h>
#include "../pnfs.h"
#include "../netns.h"

Go to the source code of this file.

Data Structures
struct	block_mount_id
struct	pnfs_block_dev
struct	my_tree
struct	pnfs_inval_markings
struct	pnfs_inval_tracking
struct	pnfs_block_extent
struct	pnfs_block_short_extent
struct	pnfs_block_layout
struct	bl_pipe_msg
struct	bl_msg_hdr

Macros
#define	PAGE_CACHE_SECTORS   (PAGE_CACHE_SIZE >> SECTOR_SHIFT)
#define	PAGE_CACHE_SECTOR_SHIFT   (PAGE_CACHE_SHIFT - SECTOR_SHIFT)
#define	SECTOR_SIZE   (1 << SECTOR_SHIFT)
#define	MY_MAX_TAGS   (15) /* tag bitnums used must be less than this */
#define	BLK_ID(lo)   ((struct block_mount_id *)(NFS_SERVER(lo->plh_inode)->pnfs_ld_data))
#define	BL_DEVICE_UMOUNT   0x0 /* Umount--delete devices */
#define	BL_DEVICE_MOUNT   0x1 /* Mount--create devices*/
#define	BL_DEVICE_REQUEST_INIT   0x0 /* Start request */
#define	BL_DEVICE_REQUEST_PROC   0x1 /* User level process succeeds */
#define	BL_DEVICE_REQUEST_ERR   0x2 /* User level process fails */

Enumerations
enum	exstate4 { PNFS_BLOCK_READWRITE_DATA = 0, PNFS_BLOCK_READ_DATA = 1, PNFS_BLOCK_INVALID_DATA = 2, PNFS_BLOCK_NONE_DATA = 3 }
enum	extentclass4 { RW_EXTENT = 0, RO_EXTENT = 1, EXTENT_LISTS = 2 }

Functions
ssize_t	bl_pipe_downcall (struct file *, const char __user *, size_t)
void	bl_pipe_destroy_msg (struct rpc_pipe_msg *)
int	nfs4_blkdev_put (struct block_device *bdev)
struct pnfs_block_dev *	nfs4_blk_decode_device (struct nfs_server *server, struct pnfs_device *dev)
int	nfs4_blk_process_layoutget (struct pnfs_layout_hdr *lo, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags)
void	bl_free_block_dev (struct pnfs_block_dev *bdev)
struct pnfs_block_extent *	bl_find_get_extent (struct pnfs_block_layout *bl, sector_t isect, struct pnfs_block_extent **cow_read)
int	bl_mark_sectors_init (struct pnfs_inval_markings *marks, sector_t offset, sector_t length)
void	bl_put_extent (struct pnfs_block_extent *be)
struct pnfs_block_extent *	bl_alloc_extent (void)
int	bl_is_sector_init (struct pnfs_inval_markings *marks, sector_t isect)
int	encode_pnfs_block_layoutupdate (struct pnfs_block_layout *bl, struct xdr_stream *xdr, const struct nfs4_layoutcommit_args *arg)
void	clean_pnfs_block_layoutupdate (struct pnfs_block_layout *bl, const struct nfs4_layoutcommit_args *arg, int status)
int	bl_add_merge_extent (struct pnfs_block_layout *bl, struct pnfs_block_extent *new)
int	bl_mark_for_commit (struct pnfs_block_extent *be, sector_t offset, sector_t length, struct pnfs_block_short_extent *new)
int	bl_push_one_short_extent (struct pnfs_inval_markings *marks)
struct pnfs_block_short_extent *	bl_pop_one_short_extent (struct pnfs_inval_markings *marks)
void	bl_free_short_extents (struct pnfs_inval_markings *marks, int num_to_free)

Macro Definition Documentation

#define BL_DEVICE_MOUNT   0x1 /* Mount--create devices*/

Definition at line 168 of file blocklayout.h.

#define BL_DEVICE_REQUEST_ERR   0x2 /* User level process fails */

Definition at line 171 of file blocklayout.h.

#define BL_DEVICE_REQUEST_INIT   0x0 /* Start request */

Definition at line 169 of file blocklayout.h.

#define BL_DEVICE_REQUEST_PROC   0x1 /* User level process succeeds */

Definition at line 170 of file blocklayout.h.

#define BL_DEVICE_UMOUNT   0x0 /* Umount--delete devices */

Definition at line 167 of file blocklayout.h.

#define BLK_ID

(

lo

)

((struct block_mount_id *)(NFS_SERVER(lo->plh_inode)->pnfs_ld_data))

Definition at line 143 of file blocklayout.h.

#define MY_MAX_TAGS   (15) /* tag bitnums used must be less than this */

Definition at line 65 of file blocklayout.h.

#define PAGE_CACHE_SECTOR_SHIFT   (PAGE_CACHE_SHIFT - SECTOR_SHIFT)

Definition at line 43 of file blocklayout.h.

#define PAGE_CACHE_SECTORS   (PAGE_CACHE_SIZE >> SECTOR_SHIFT)

Definition at line 42 of file blocklayout.h.

#define SECTOR_SIZE   (1 << SECTOR_SHIFT)

Definition at line 44 of file blocklayout.h.

Enumeration Type Documentation

enum exstate4

Enumerator:

PNFS_BLOCK_READWRITE_DATA
PNFS_BLOCK_READ_DATA
PNFS_BLOCK_INVALID_DATA
PNFS_BLOCK_NONE_DATA

Definition at line 58 of file blocklayout.h.

enum extentclass4

Enumerator:

RW_EXTENT
RO_EXTENT
EXTENT_LISTS

Definition at line 118 of file blocklayout.h.

Function Documentation

int bl_add_merge_extent	(	struct pnfs_block_layout *	bl,
		struct pnfs_block_extent *	new
	)

Definition at line 495 of file extents.c.

struct pnfs_block_extent* bl_alloc_extent ( void  )

read

Definition at line 449 of file extents.c.

struct pnfs_block_extent* bl_find_get_extent ( struct pnfs_block_layout *  bl, sector_t  isect, struct pnfs_block_extent **  cow_read  )

read

Definition at line 590 of file extents.c.

void bl_free_block_dev

(

struct pnfs_block_dev *

bdev

)

Definition at line 102 of file blocklayoutdm.c.

void bl_free_short_extents	(	struct pnfs_inval_markings *	marks,
		int	num_to_free
	)

Definition at line 891 of file extents.c.

int bl_is_sector_init	(	struct pnfs_inval_markings *	marks,
		sector_t	isect
	)

Definition at line 178 of file extents.c.

int bl_mark_for_commit	(	struct pnfs_block_extent *	be,
		sector_t	offset,
		sector_t	length,
		struct pnfs_block_short_extent *	new
	)

Definition at line 375 of file extents.c.

int bl_mark_sectors_init	(	struct pnfs_inval_markings *	marks,
		sector_t	offset,
		sector_t	length
	)

Definition at line 234 of file extents.c.

void bl_pipe_destroy_msg

(

struct rpc_pipe_msg *

)

Definition at line 83 of file blocklayoutdev.c.

ssize_t bl_pipe_downcall	(	struct file *	,
		const char __user *	,
		size_t
	)

Definition at line 66 of file blocklayoutdev.c.

struct pnfs_block_short_extent* bl_pop_one_short_extent ( struct pnfs_inval_markings *  marks )

read

Definition at line 876 of file extents.c.

int bl_push_one_short_extent

(

struct pnfs_inval_markings *

marks

)

Definition at line 860 of file extents.c.

void bl_put_extent

(

struct pnfs_block_extent *

be

)

Definition at line 440 of file extents.c.

void clean_pnfs_block_layoutupdate	(	struct pnfs_block_layout *	bl,
		const struct nfs4_layoutcommit_args *	arg,
		int	status
	)

Definition at line 833 of file extents.c.

int encode_pnfs_block_layoutupdate	(	struct pnfs_block_layout *	bl,
		struct xdr_stream *	xdr,
		const struct nfs4_layoutcommit_args *	arg
	)

Definition at line 657 of file extents.c.

struct pnfs_block_dev* nfs4_blk_decode_device ( struct nfs_server *  server, struct pnfs_device *  dev  )

read

Definition at line 96 of file blocklayoutdev.c.

int nfs4_blk_process_layoutget	(	struct pnfs_layout_hdr *	lo,
		struct nfs4_layoutget_res *	lgr,
		gfp_t	gfp_flags
	)

Definition at line 267 of file blocklayoutdev.c.

int nfs4_blkdev_put

(

struct block_device *

bdev

)

Definition at line 59 of file blocklayoutdev.c.