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-rw-r--r--fs/afs/internal.h66
1 files changed, 65 insertions, 1 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 9feb5c59d8fc..a30d4fa768e3 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -21,6 +21,7 @@
21 21
22#define AFS_CELL_MAX_ADDRS 15 22#define AFS_CELL_MAX_ADDRS 15
23 23
24struct pagevec;
24struct afs_call; 25struct afs_call;
25 26
26typedef enum { 27typedef enum {
@@ -75,12 +76,15 @@ struct afs_call {
75 struct key *key; /* security for this call */ 76 struct key *key; /* security for this call */
76 struct afs_server *server; /* server affected by incoming CM call */ 77 struct afs_server *server; /* server affected by incoming CM call */
77 void *request; /* request data (first part) */ 78 void *request; /* request data (first part) */
78 void *request2; /* request data (second part) */ 79 struct address_space *mapping; /* page set */
80 struct afs_writeback *wb; /* writeback being performed */
79 void *buffer; /* reply receive buffer */ 81 void *buffer; /* reply receive buffer */
80 void *reply; /* reply buffer (first part) */ 82 void *reply; /* reply buffer (first part) */
81 void *reply2; /* reply buffer (second part) */ 83 void *reply2; /* reply buffer (second part) */
82 void *reply3; /* reply buffer (third part) */ 84 void *reply3; /* reply buffer (third part) */
83 void *reply4; /* reply buffer (fourth part) */ 85 void *reply4; /* reply buffer (fourth part) */
86 pgoff_t first; /* first page in mapping to deal with */
87 pgoff_t last; /* last page in mapping to deal with */
84 enum { /* call state */ 88 enum { /* call state */
85 AFS_CALL_REQUESTING, /* request is being sent for outgoing call */ 89 AFS_CALL_REQUESTING, /* request is being sent for outgoing call */
86 AFS_CALL_AWAIT_REPLY, /* awaiting reply to outgoing call */ 90 AFS_CALL_AWAIT_REPLY, /* awaiting reply to outgoing call */
@@ -97,14 +101,18 @@ struct afs_call {
97 unsigned request_size; /* size of request data */ 101 unsigned request_size; /* size of request data */
98 unsigned reply_max; /* maximum size of reply */ 102 unsigned reply_max; /* maximum size of reply */
99 unsigned reply_size; /* current size of reply */ 103 unsigned reply_size; /* current size of reply */
104 unsigned first_offset; /* offset into mapping[first] */
105 unsigned last_to; /* amount of mapping[last] */
100 unsigned short offset; /* offset into received data store */ 106 unsigned short offset; /* offset into received data store */
101 unsigned char unmarshall; /* unmarshalling phase */ 107 unsigned char unmarshall; /* unmarshalling phase */
102 bool incoming; /* T if incoming call */ 108 bool incoming; /* T if incoming call */
109 bool send_pages; /* T if data from mapping should be sent */
103 u16 service_id; /* RxRPC service ID to call */ 110 u16 service_id; /* RxRPC service ID to call */
104 __be16 port; /* target UDP port */ 111 __be16 port; /* target UDP port */
105 __be32 operation_ID; /* operation ID for an incoming call */ 112 __be32 operation_ID; /* operation ID for an incoming call */
106 u32 count; /* count for use in unmarshalling */ 113 u32 count; /* count for use in unmarshalling */
107 __be32 tmp; /* place to extract temporary data */ 114 __be32 tmp; /* place to extract temporary data */
115 afs_dataversion_t store_version; /* updated version expected from store */
108}; 116};
109 117
110struct afs_call_type { 118struct afs_call_type {
@@ -124,6 +132,32 @@ struct afs_call_type {
124}; 132};
125 133
126/* 134/*
135 * record of an outstanding writeback on a vnode
136 */
137struct afs_writeback {
138 struct list_head link; /* link in vnode->writebacks */
139 struct work_struct writer; /* work item to perform the writeback */
140 struct afs_vnode *vnode; /* vnode to which this write applies */
141 struct key *key; /* owner of this write */
142 wait_queue_head_t waitq; /* completion and ready wait queue */
143 pgoff_t first; /* first page in batch */
144 pgoff_t point; /* last page in current store op */
145 pgoff_t last; /* last page in batch (inclusive) */
146 unsigned offset_first; /* offset into first page of start of write */
147 unsigned to_last; /* offset into last page of end of write */
148 int num_conflicts; /* count of conflicting writes in list */
149 int usage;
150 bool conflicts; /* T if has dependent conflicts */
151 enum {
152 AFS_WBACK_SYNCING, /* synchronisation being performed */
153 AFS_WBACK_PENDING, /* write pending */
154 AFS_WBACK_CONFLICTING, /* conflicting writes posted */
155 AFS_WBACK_WRITING, /* writing back */
156 AFS_WBACK_COMPLETE /* the writeback record has been unlinked */
157 } state __attribute__((packed));
158};
159
160/*
127 * AFS superblock private data 161 * AFS superblock private data
128 * - there's one superblock per volume 162 * - there's one superblock per volume
129 */ 163 */
@@ -305,6 +339,7 @@ struct afs_vnode {
305 wait_queue_head_t update_waitq; /* status fetch waitqueue */ 339 wait_queue_head_t update_waitq; /* status fetch waitqueue */
306 int update_cnt; /* number of outstanding ops that will update the 340 int update_cnt; /* number of outstanding ops that will update the
307 * status */ 341 * status */
342 spinlock_t writeback_lock; /* lock for writebacks */
308 spinlock_t lock; /* waitqueue/flags lock */ 343 spinlock_t lock; /* waitqueue/flags lock */
309 unsigned long flags; 344 unsigned long flags;
310#define AFS_VNODE_CB_BROKEN 0 /* set if vnode's callback was broken */ 345#define AFS_VNODE_CB_BROKEN 0 /* set if vnode's callback was broken */
@@ -316,6 +351,8 @@ struct afs_vnode {
316 351
317 long acl_order; /* ACL check count (callback break count) */ 352 long acl_order; /* ACL check count (callback break count) */
318 353
354 struct list_head writebacks; /* alterations in pagecache that need writing */
355
319 /* outstanding callback notification on this file */ 356 /* outstanding callback notification on this file */
320 struct rb_node server_rb; /* link in server->fs_vnodes */ 357 struct rb_node server_rb; /* link in server->fs_vnodes */
321 struct rb_node cb_promise; /* link in server->cb_promises */ 358 struct rb_node cb_promise; /* link in server->cb_promises */
@@ -463,6 +500,12 @@ extern int afs_fs_rename(struct afs_server *, struct key *,
463 struct afs_vnode *, const char *, 500 struct afs_vnode *, const char *,
464 struct afs_vnode *, const char *, 501 struct afs_vnode *, const char *,
465 const struct afs_wait_mode *); 502 const struct afs_wait_mode *);
503extern int afs_fs_store_data(struct afs_server *, struct afs_writeback *,
504 pgoff_t, pgoff_t, unsigned, unsigned,
505 const struct afs_wait_mode *);
506extern int afs_fs_setattr(struct afs_server *, struct key *,
507 struct afs_vnode *, struct iattr *,
508 const struct afs_wait_mode *);
466 509
467/* 510/*
468 * inode.c 511 * inode.c
@@ -473,6 +516,7 @@ extern struct inode *afs_iget(struct super_block *, struct key *,
473extern void afs_zap_data(struct afs_vnode *); 516extern void afs_zap_data(struct afs_vnode *);
474extern int afs_validate(struct afs_vnode *, struct key *); 517extern int afs_validate(struct afs_vnode *, struct key *);
475extern int afs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 518extern int afs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
519extern int afs_setattr(struct dentry *, struct iattr *);
476extern void afs_clear_inode(struct inode *); 520extern void afs_clear_inode(struct inode *);
477 521
478/* 522/*
@@ -625,6 +669,9 @@ extern int afs_vnode_symlink(struct afs_vnode *, struct key *, const char *,
625 struct afs_file_status *, struct afs_server **); 669 struct afs_file_status *, struct afs_server **);
626extern int afs_vnode_rename(struct afs_vnode *, struct afs_vnode *, 670extern int afs_vnode_rename(struct afs_vnode *, struct afs_vnode *,
627 struct key *, const char *, const char *); 671 struct key *, const char *, const char *);
672extern int afs_vnode_store_data(struct afs_writeback *, pgoff_t, pgoff_t,
673 unsigned, unsigned);
674extern int afs_vnode_setattr(struct afs_vnode *, struct key *, struct iattr *);
628 675
629/* 676/*
630 * volume.c 677 * volume.c
@@ -641,6 +688,23 @@ extern struct afs_server *afs_volume_pick_fileserver(struct afs_vnode *);
641extern int afs_volume_release_fileserver(struct afs_vnode *, 688extern int afs_volume_release_fileserver(struct afs_vnode *,
642 struct afs_server *, int); 689 struct afs_server *, int);
643 690
691/*
692 * write.c
693 */
694extern int afs_set_page_dirty(struct page *);
695extern void afs_put_writeback(struct afs_writeback *);
696extern int afs_prepare_write(struct file *, struct page *, unsigned, unsigned);
697extern int afs_commit_write(struct file *, struct page *, unsigned, unsigned);
698extern int afs_writepage(struct page *, struct writeback_control *);
699extern int afs_writepages(struct address_space *, struct writeback_control *);
700extern int afs_write_inode(struct inode *, int);
701extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *);
702extern ssize_t afs_file_write(struct kiocb *, const struct iovec *,
703 unsigned long, loff_t);
704extern int afs_writeback_all(struct afs_vnode *);
705extern int afs_fsync(struct file *, struct dentry *, int);
706
707
644/*****************************************************************************/ 708/*****************************************************************************/
645/* 709/*
646 * debug tracing 710 * debug tracing
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-31 22:19:42 -0400