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Diffstat (limited to 'fs/afs/internal.h')
-rw-r--r--fs/afs/internal.h95
1 files changed, 87 insertions, 8 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index d90c158cd934..a30d4fa768e3 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -21,6 +21,7 @@
#define AFS_CELL_MAX_ADDRS 15
+struct pagevec;
struct afs_call;
typedef enum {
@@ -75,12 +76,15 @@ struct afs_call {
struct key *key; /* security for this call */
struct afs_server *server; /* server affected by incoming CM call */
void *request; /* request data (first part) */
- void *request2; /* request data (second part) */
+ struct address_space *mapping; /* page set */
+ struct afs_writeback *wb; /* writeback being performed */
void *buffer; /* reply receive buffer */
void *reply; /* reply buffer (first part) */
void *reply2; /* reply buffer (second part) */
void *reply3; /* reply buffer (third part) */
void *reply4; /* reply buffer (fourth part) */
+ pgoff_t first; /* first page in mapping to deal with */
+ pgoff_t last; /* last page in mapping to deal with */
enum { /* call state */
AFS_CALL_REQUESTING, /* request is being sent for outgoing call */
AFS_CALL_AWAIT_REPLY, /* awaiting reply to outgoing call */
@@ -97,14 +101,18 @@ struct afs_call {
unsigned request_size; /* size of request data */
unsigned reply_max; /* maximum size of reply */
unsigned reply_size; /* current size of reply */
+ unsigned first_offset; /* offset into mapping[first] */
+ unsigned last_to; /* amount of mapping[last] */
unsigned short offset; /* offset into received data store */
unsigned char unmarshall; /* unmarshalling phase */
bool incoming; /* T if incoming call */
+ bool send_pages; /* T if data from mapping should be sent */
u16 service_id; /* RxRPC service ID to call */
__be16 port; /* target UDP port */
__be32 operation_ID; /* operation ID for an incoming call */
u32 count; /* count for use in unmarshalling */
__be32 tmp; /* place to extract temporary data */
+ afs_dataversion_t store_version; /* updated version expected from store */
};
struct afs_call_type {
@@ -124,6 +132,32 @@ struct afs_call_type {
};
/*
+ * record of an outstanding writeback on a vnode
+ */
+struct afs_writeback {
+ struct list_head link; /* link in vnode->writebacks */
+ struct work_struct writer; /* work item to perform the writeback */
+ struct afs_vnode *vnode; /* vnode to which this write applies */
+ struct key *key; /* owner of this write */
+ wait_queue_head_t waitq; /* completion and ready wait queue */
+ pgoff_t first; /* first page in batch */
+ pgoff_t point; /* last page in current store op */
+ pgoff_t last; /* last page in batch (inclusive) */
+ unsigned offset_first; /* offset into first page of start of write */
+ unsigned to_last; /* offset into last page of end of write */
+ int num_conflicts; /* count of conflicting writes in list */
+ int usage;
+ bool conflicts; /* T if has dependent conflicts */
+ enum {
+ AFS_WBACK_SYNCING, /* synchronisation being performed */
+ AFS_WBACK_PENDING, /* write pending */
+ AFS_WBACK_CONFLICTING, /* conflicting writes posted */
+ AFS_WBACK_WRITING, /* writing back */
+ AFS_WBACK_COMPLETE /* the writeback record has been unlinked */
+ } state __attribute__((packed));
+};
+
+/*
* AFS superblock private data
* - there's one superblock per volume
*/
@@ -305,6 +339,7 @@ struct afs_vnode {
wait_queue_head_t update_waitq; /* status fetch waitqueue */
int update_cnt; /* number of outstanding ops that will update the
* status */
+ spinlock_t writeback_lock; /* lock for writebacks */
spinlock_t lock; /* waitqueue/flags lock */
unsigned long flags;
#define AFS_VNODE_CB_BROKEN 0 /* set if vnode's callback was broken */
@@ -316,6 +351,8 @@ struct afs_vnode {
long acl_order; /* ACL check count (callback break count) */
+ struct list_head writebacks; /* alterations in pagecache that need writing */
+
/* outstanding callback notification on this file */
struct rb_node server_rb; /* link in server->fs_vnodes */
struct rb_node cb_promise; /* link in server->cb_promises */
@@ -433,10 +470,6 @@ extern const struct file_operations afs_file_operations;
extern int afs_open(struct inode *, struct file *);
extern int afs_release(struct inode *, struct file *);
-#ifdef AFS_CACHING_SUPPORT
-extern int afs_cache_get_page_cookie(struct page *, struct cachefs_page **);
-#endif
-
/*
* fsclient.c
*/
@@ -467,6 +500,12 @@ extern int afs_fs_rename(struct afs_server *, struct key *,
struct afs_vnode *, const char *,
struct afs_vnode *, const char *,
const struct afs_wait_mode *);
+extern int afs_fs_store_data(struct afs_server *, struct afs_writeback *,
+ pgoff_t, pgoff_t, unsigned, unsigned,
+ const struct afs_wait_mode *);
+extern int afs_fs_setattr(struct afs_server *, struct key *,
+ struct afs_vnode *, struct iattr *,
+ const struct afs_wait_mode *);
/*
* inode.c
@@ -474,10 +513,10 @@ extern int afs_fs_rename(struct afs_server *, struct key *,
extern struct inode *afs_iget(struct super_block *, struct key *,
struct afs_fid *, struct afs_file_status *,
struct afs_callback *);
+extern void afs_zap_data(struct afs_vnode *);
extern int afs_validate(struct afs_vnode *, struct key *);
-extern int afs_inode_getattr(struct vfsmount *, struct dentry *,
- struct kstat *);
-extern void afs_zap_permits(struct rcu_head *);
+extern int afs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
+extern int afs_setattr(struct dentry *, struct iattr *);
extern void afs_clear_inode(struct inode *);
/*
@@ -533,6 +572,7 @@ extern int afs_extract_data(struct afs_call *, struct sk_buff *, bool, void *,
*/
extern void afs_clear_permits(struct afs_vnode *);
extern void afs_cache_permit(struct afs_vnode *, struct key *, long);
+extern void afs_zap_permits(struct rcu_head *);
extern struct key *afs_request_key(struct afs_cell *);
extern int afs_permission(struct inode *, int, struct nameidata *);
@@ -629,6 +669,9 @@ extern int afs_vnode_symlink(struct afs_vnode *, struct key *, const char *,
struct afs_file_status *, struct afs_server **);
extern int afs_vnode_rename(struct afs_vnode *, struct afs_vnode *,
struct key *, const char *, const char *);
+extern int afs_vnode_store_data(struct afs_writeback *, pgoff_t, pgoff_t,
+ unsigned, unsigned);
+extern int afs_vnode_setattr(struct afs_vnode *, struct key *, struct iattr *);
/*
* volume.c
@@ -645,6 +688,23 @@ extern struct afs_server *afs_volume_pick_fileserver(struct afs_vnode *);
extern int afs_volume_release_fileserver(struct afs_vnode *,
struct afs_server *, int);
+/*
+ * write.c
+ */
+extern int afs_set_page_dirty(struct page *);
+extern void afs_put_writeback(struct afs_writeback *);
+extern int afs_prepare_write(struct file *, struct page *, unsigned, unsigned);
+extern int afs_commit_write(struct file *, struct page *, unsigned, unsigned);
+extern int afs_writepage(struct page *, struct writeback_control *);
+extern int afs_writepages(struct address_space *, struct writeback_control *);
+extern int afs_write_inode(struct inode *, int);
+extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *);
+extern ssize_t afs_file_write(struct kiocb *, const struct iovec *,
+ unsigned long, loff_t);
+extern int afs_writeback_all(struct afs_vnode *);
+extern int afs_fsync(struct file *, struct dentry *, int);
+
+
/*****************************************************************************/
/*
* debug tracing
@@ -726,6 +786,21 @@ do { \
} \
} while(0)
+#define ASSERTRANGE(L, OP1, N, OP2, H) \
+do { \
+ if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \
+ printk(KERN_ERR "\n"); \
+ printk(KERN_ERR "AFS: Assertion failed\n"); \
+ printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \
+ (unsigned long)(L), (unsigned long)(N), \
+ (unsigned long)(H)); \
+ printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \
+ (unsigned long)(L), (unsigned long)(N), \
+ (unsigned long)(H)); \
+ BUG(); \
+ } \
+} while(0)
+
#define ASSERTIF(C, X) \
do { \
if (unlikely((C) && !(X))) { \
@@ -758,6 +833,10 @@ do { \
do { \
} while(0)
+#define ASSERTRANGE(L, OP1, N, OP2, H) \
+do { \
+} while(0)
+
#define ASSERTIF(C, X) \
do { \
} while(0)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 14:38:58 +0000