Merge branch '3.2-without-smb2' of git://git.samba.org/sfrench/cifs-2.6

* '3.2-without-smb2' of git://git.samba.org/sfrench/cifs-2.6: (52 commits)
  Fix build break when freezer not configured
  Add definition for share encryption
  CIFS: Make cifs_push_locks send as many locks at once as possible
  CIFS: Send as many mandatory unlock ranges at once as possible
  CIFS: Implement caching mechanism for posix brlocks
  CIFS: Implement caching mechanism for mandatory brlocks
  CIFS: Fix DFS handling in cifs_get_file_info
  CIFS: Fix error handling in cifs_readv_complete
  [CIFS] Fixup trivial checkpatch warning
  [CIFS] Show nostrictsync and noperm mount options in /proc/mounts
  cifs, freezer: add wait_event_freezekillable and have cifs use it
  cifs: allow cifs_max_pending to be readable under /sys/module/cifs/parameters
  cifs: tune bdi.ra_pages in accordance with the rsize
  cifs: allow for larger rsize= options and change defaults
  cifs: convert cifs_readpages to use async reads
  cifs: add cifs_async_readv
  cifs: fix protocol definition for READ_RSP
  cifs: add a callback function to receive the rest of the frame
  cifs: break out 3rd receive phase into separate function
  cifs: find mid earlier in receive codepath
  ...

1 files changed, 47 insertions, 8 deletions

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 95dad9d14cf..8238aa13e01 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -167,6 +167,8 @@ struct smb_vol {
 	uid_t cred_uid;
 	uid_t linux_uid;
 	gid_t linux_gid;
+	uid_t backupuid;
+	gid_t backupgid;
 	mode_t file_mode;
 	mode_t dir_mode;
 	unsigned secFlg;
@@ -179,6 +181,8 @@ struct smb_vol {
 	bool noperm:1;
 	bool no_psx_acl:1; /* set if posix acl support should be disabled */
 	bool cifs_acl:1;
+	bool backupuid_specified; /* mount option  backupuid  is specified */
+	bool backupgid_specified; /* mount option  backupgid  is specified */
 	bool no_xattr:1;   /* set if xattr (EA) support should be disabled*/
 	bool server_ino:1; /* use inode numbers from server ie UniqueId */
 	bool direct_io:1;
@@ -219,7 +223,8 @@ struct smb_vol {
 			 CIFS_MOUNT_OVERR_GID | CIFS_MOUNT_DYNPERM | \
 			 CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \
 			 CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \
-			 CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO)
+			 CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \
+			 CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID)
 
 #define CIFS_MS_MASK (MS_RDONLY | MS_MANDLOCK | MS_NOEXEC | MS_NOSUID | \
 		      MS_NODEV | MS_SYNCHRONOUS)
@@ -286,7 +291,13 @@ struct TCP_Server_Info {
 	bool	sec_kerberosu2u;	/* supports U2U Kerberos */
 	bool	sec_kerberos;		/* supports plain Kerberos */
 	bool	sec_mskerberos;		/* supports legacy MS Kerberos */
+	bool	large_buf;		/* is current buffer large? */
 	struct delayed_work	echo; /* echo ping workqueue job */
+	struct kvec *iov;	/* reusable kvec array for receives */
+	unsigned int nr_iov;	/* number of kvecs in array */
+	char	*smallbuf;	/* pointer to current "small" buffer */
+	char	*bigbuf;	/* pointer to current "big" buffer */
+	unsigned int total_read; /* total amount of data read in this pass */
 #ifdef CONFIG_CIFS_FSCACHE
 	struct fscache_cookie   *fscache; /* client index cache cookie */
 #endif
@@ -485,9 +496,13 @@ extern struct cifs_tcon *cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb);
  */
 struct cifsLockInfo {
 	struct list_head llist;	/* pointer to next cifsLockInfo */
+	struct list_head blist; /* pointer to locks blocked on this */
+	wait_queue_head_t block_q;
 	__u64 offset;
 	__u64 length;
+	__u32 pid;
 	__u8 type;
+	__u16 netfid;
 };
 
 /*
@@ -520,8 +535,6 @@ struct cifsFileInfo {
 	struct dentry *dentry;
 	unsigned int f_flags;
 	struct tcon_link *tlink;
-	struct mutex lock_mutex;
-	struct list_head llist; /* list of byte range locks we have. */
 	bool invalidHandle:1;	/* file closed via session abend */
 	bool oplock_break_cancelled:1;
 	int count;		/* refcount protected by cifs_file_list_lock */
@@ -554,7 +567,9 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
  */
 
 struct cifsInodeInfo {
-	struct list_head lockList;
+	struct list_head llist;		/* brlocks for this inode */
+	bool can_cache_brlcks;
+	struct mutex lock_mutex;	/* protect two fields above */
 	/* BB add in lists for dirty pages i.e. write caching info for oplock */
 	struct list_head openFileList;
 	__u32 cifsAttrs; /* e.g. DOS archive bit, sparse, compressed, system */
@@ -643,8 +658,24 @@ static inline void cifs_stats_bytes_read(struct cifs_tcon *tcon,
 struct mid_q_entry;
 
 /*
- * This is the prototype for the mid callback function. When creating one,
- * take special care to avoid deadlocks. Things to bear in mind:
+ * This is the prototype for the mid receive function. This function is for
+ * receiving the rest of the SMB frame, starting with the WordCount (which is
+ * just after the MID in struct smb_hdr). Note:
+ *
+ * - This will be called by cifsd, with no locks held.
+ * - The mid will still be on the pending_mid_q.
+ * - mid->resp_buf will point to the current buffer.
+ *
+ * Returns zero on a successful receive, or an error. The receive state in
+ * the TCP_Server_Info will also be updated.
+ */
+typedef int (mid_receive_t)(struct TCP_Server_Info *server,
+			    struct mid_q_entry *mid);
+
+/*
+ * This is the prototype for the mid callback function. This is called once the
+ * mid has been received off of the socket. When creating one, take special
+ * care to avoid deadlocks. Things to bear in mind:
  *
  * - it will be called by cifsd, with no locks held
  * - the mid will be removed from any lists
@@ -662,9 +693,10 @@ struct mid_q_entry {
 	unsigned long when_sent; /* time when smb send finished */
 	unsigned long when_received; /* when demux complete (taken off wire) */
 #endif
+	mid_receive_t *receive; /* call receive callback */
 	mid_callback_t *callback; /* call completion callback */
 	void *callback_data;	  /* general purpose pointer for callback */
-	struct smb_hdr *resp_buf;	/* response buffer */
+	struct smb_hdr *resp_buf;	/* pointer to received SMB header */
 	int midState;	/* wish this were enum but can not pass to wait_event */
 	__u8 command;	/* smb command code */
 	bool largeBuf:1;	/* if valid response, is pointer to large buf */
@@ -964,7 +996,8 @@ GLOBAL_EXTERN unsigned int multiuser_mount; /* if enabled allows new sessions
 				to be established on existing mount if we
 				have the uid/password or Kerberos credential
 				or equivalent for current user */
-GLOBAL_EXTERN unsigned int oplockEnabled;
+/* enable or disable oplocks */
+GLOBAL_EXTERN bool enable_oplocks;
 GLOBAL_EXTERN unsigned int lookupCacheEnabled;
 GLOBAL_EXTERN unsigned int global_secflags;	/* if on, session setup sent
 				with more secure ntlmssp2 challenge/resp */
@@ -978,10 +1011,16 @@ GLOBAL_EXTERN unsigned int cifs_max_pending; /* MAX requests at once to server*/
 /* reconnect after this many failed echo attempts */
 GLOBAL_EXTERN unsigned short echo_retries;
 
+#ifdef CONFIG_CIFS_ACL
 GLOBAL_EXTERN struct rb_root uidtree;
 GLOBAL_EXTERN struct rb_root gidtree;
 GLOBAL_EXTERN spinlock_t siduidlock;
 GLOBAL_EXTERN spinlock_t sidgidlock;
+GLOBAL_EXTERN struct rb_root siduidtree;
+GLOBAL_EXTERN struct rb_root sidgidtree;
+GLOBAL_EXTERN spinlock_t uidsidlock;
+GLOBAL_EXTERN spinlock_t gidsidlock;
+#endif /* CONFIG_CIFS_ACL */
 
 void cifs_oplock_break(struct work_struct *work);