mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 09:36:25 +00:00
bfc090c468
Remove the unnecessary __attribute__((packed)) since the enum itself is packed and not the location of it in the structure. Signed-off-by: Jan Blunck <jblunck@suse.de> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
141 lines
4.9 KiB
C
141 lines
4.9 KiB
C
/* volume.h: AFS volume management
|
|
*
|
|
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _LINUX_AFS_VOLUME_H
|
|
#define _LINUX_AFS_VOLUME_H
|
|
|
|
#include "types.h"
|
|
#include "fsclient.h"
|
|
#include "kafstimod.h"
|
|
#include "kafsasyncd.h"
|
|
#include "cache.h"
|
|
|
|
typedef enum {
|
|
AFS_VLUPD_SLEEP, /* sleeping waiting for update timer to fire */
|
|
AFS_VLUPD_PENDING, /* on pending queue */
|
|
AFS_VLUPD_INPROGRESS, /* op in progress */
|
|
AFS_VLUPD_BUSYSLEEP, /* sleeping because server returned EBUSY */
|
|
|
|
} __attribute__((packed)) afs_vlocation_upd_t;
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* entry in the cached volume location catalogue
|
|
*/
|
|
struct afs_cache_vlocation
|
|
{
|
|
uint8_t name[64]; /* volume name (lowercase, padded with NULs) */
|
|
uint8_t nservers; /* number of entries used in servers[] */
|
|
uint8_t vidmask; /* voltype mask for vid[] */
|
|
uint8_t srvtmask[8]; /* voltype masks for servers[] */
|
|
#define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */
|
|
#define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */
|
|
#define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */
|
|
|
|
afs_volid_t vid[3]; /* volume IDs for R/W, R/O and Bak volumes */
|
|
struct in_addr servers[8]; /* fileserver addresses */
|
|
time_t rtime; /* last retrieval time */
|
|
};
|
|
|
|
#ifdef AFS_CACHING_SUPPORT
|
|
extern struct cachefs_index_def afs_vlocation_cache_index_def;
|
|
#endif
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* volume -> vnode hash table entry
|
|
*/
|
|
struct afs_cache_vhash
|
|
{
|
|
afs_voltype_t vtype; /* which volume variation */
|
|
uint8_t hash_bucket; /* which hash bucket this represents */
|
|
} __attribute__((packed));
|
|
|
|
#ifdef AFS_CACHING_SUPPORT
|
|
extern struct cachefs_index_def afs_volume_cache_index_def;
|
|
#endif
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* AFS volume location record
|
|
*/
|
|
struct afs_vlocation
|
|
{
|
|
atomic_t usage;
|
|
struct list_head link; /* link in cell volume location list */
|
|
struct afs_timer timeout; /* decaching timer */
|
|
struct afs_cell *cell; /* cell to which volume belongs */
|
|
#ifdef AFS_CACHING_SUPPORT
|
|
struct cachefs_cookie *cache; /* caching cookie */
|
|
#endif
|
|
struct afs_cache_vlocation vldb; /* volume information DB record */
|
|
struct afs_volume *vols[3]; /* volume access record pointer (index by type) */
|
|
rwlock_t lock; /* access lock */
|
|
unsigned long read_jif; /* time at which last read from vlserver */
|
|
struct afs_timer upd_timer; /* update timer */
|
|
struct afs_async_op upd_op; /* update operation */
|
|
afs_vlocation_upd_t upd_state; /* update state */
|
|
unsigned short upd_first_svix; /* first server index during update */
|
|
unsigned short upd_curr_svix; /* current server index during update */
|
|
unsigned short upd_rej_cnt; /* ENOMEDIUM count during update */
|
|
unsigned short upd_busy_cnt; /* EBUSY count during update */
|
|
unsigned short valid; /* T if valid */
|
|
};
|
|
|
|
extern int afs_vlocation_lookup(struct afs_cell *cell,
|
|
const char *name,
|
|
unsigned namesz,
|
|
struct afs_vlocation **_vlocation);
|
|
|
|
#define afs_get_vlocation(V) do { atomic_inc(&(V)->usage); } while(0)
|
|
|
|
extern void afs_put_vlocation(struct afs_vlocation *vlocation);
|
|
extern void afs_vlocation_do_timeout(struct afs_vlocation *vlocation);
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* AFS volume access record
|
|
*/
|
|
struct afs_volume
|
|
{
|
|
atomic_t usage;
|
|
struct afs_cell *cell; /* cell to which belongs (unrefd ptr) */
|
|
struct afs_vlocation *vlocation; /* volume location */
|
|
#ifdef AFS_CACHING_SUPPORT
|
|
struct cachefs_cookie *cache; /* caching cookie */
|
|
#endif
|
|
afs_volid_t vid; /* volume ID */
|
|
afs_voltype_t type; /* type of volume */
|
|
char type_force; /* force volume type (suppress R/O -> R/W) */
|
|
unsigned short nservers; /* number of server slots filled */
|
|
unsigned short rjservers; /* number of servers discarded due to -ENOMEDIUM */
|
|
struct afs_server *servers[8]; /* servers on which volume resides (ordered) */
|
|
struct rw_semaphore server_sem; /* lock for accessing current server */
|
|
};
|
|
|
|
extern int afs_volume_lookup(const char *name,
|
|
struct afs_cell *cell,
|
|
int rwpath,
|
|
struct afs_volume **_volume);
|
|
|
|
#define afs_get_volume(V) do { atomic_inc(&(V)->usage); } while(0)
|
|
|
|
extern void afs_put_volume(struct afs_volume *volume);
|
|
|
|
extern int afs_volume_pick_fileserver(struct afs_volume *volume,
|
|
struct afs_server **_server);
|
|
|
|
extern int afs_volume_release_fileserver(struct afs_volume *volume,
|
|
struct afs_server *server,
|
|
int result);
|
|
|
|
#endif /* _LINUX_AFS_VOLUME_H */
|