block: treat REQ_FUA and REQ_PREFLUSH as synchronous

[sfrench/cifs-2.6.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index b04883e745792e4cc28f3b4337b87b929e406a40..ccedccb28ec8bbe90ea212a348b2a14668a224b3 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -63,7 +63,7 @@ extern void __init files_maxfiles_init(void);
 
 extern struct files_stat_struct files_stat;
 extern unsigned long get_max_files(void);
-extern int sysctl_nr_open;
+extern unsigned int sysctl_nr_open;
 extern struct inodes_stat_t inodes_stat;
 extern int leases_enable, lease_break_time;
 extern int sysctl_protected_symlinks;
@@ -196,12 +196,12 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
 #define READ                   REQ_OP_READ
 #define WRITE                  REQ_OP_WRITE
 
-#define READ_SYNC              REQ_SYNC
+#define READ_SYNC              0
 #define WRITE_SYNC             (REQ_SYNC | REQ_NOIDLE)
 #define WRITE_ODIRECT          REQ_SYNC
-#define WRITE_FLUSH            (REQ_SYNC | REQ_NOIDLE | REQ_PREFLUSH)
-#define WRITE_FUA              (REQ_SYNC | REQ_NOIDLE | REQ_FUA)
-#define WRITE_FLUSH_FUA                (REQ_SYNC | REQ_NOIDLE | REQ_PREFLUSH | REQ_FUA)
+#define WRITE_FLUSH            (REQ_NOIDLE | REQ_PREFLUSH)
+#define WRITE_FUA              (REQ_NOIDLE | REQ_FUA)
+#define WRITE_FLUSH_FUA                (REQ_NOIDLE | REQ_PREFLUSH | REQ_FUA)
 
 /*
  * Attribute flags.  These should be or-ed together to figure out what
@@ -224,6 +224,7 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
 #define ATTR_KILL_PRIV (1 << 14)
 #define ATTR_OPEN      (1 << 15) /* Truncating from open(O_TRUNC) */
 #define ATTR_TIMES_SET (1 << 16)
+#define ATTR_TOUCH     (1 << 17)
 
 /*
  * Whiteout is represented by a char device.  The following constants define the
@@ -439,8 +440,9 @@ struct address_space {
        unsigned long           nrexceptional;
        pgoff_t                 writeback_index;/* writeback starts here */
        const struct address_space_operations *a_ops;   /* methods */
-       unsigned long           flags;          /* error bits/gfp mask */
+       unsigned long           flags;          /* error bits */
        spinlock_t              private_lock;   /* for use by the address_space */
+       gfp_t                   gfp_mask;       /* implicit gfp mask for allocations */
        struct list_head        private_list;   /* ditto */
        void                    *private_data;  /* ditto */
 } __attribute__((aligned(sizeof(long))));
@@ -591,6 +593,7 @@ is_uncached_acl(struct posix_acl *acl)
 #define IOP_FASTPERM   0x0001
 #define IOP_LOOKUP     0x0002
 #define IOP_NOFOLLOW   0x0004
+#define IOP_XATTR      0x0008
 
 /*
  * Keep mostly read-only and often accessed (especially for
@@ -1064,6 +1067,18 @@ struct file_lock_context {
 
 extern void send_sigio(struct fown_struct *fown, int fd, int band);
 
+/*
+ * Return the inode to use for locking
+ *
+ * For overlayfs this should be the overlay inode, not the real inode returned
+ * by file_inode().  For any other fs file_inode(filp) and locks_inode(filp) are
+ * equal.
+ */
+static inline struct inode *locks_inode(const struct file *f)
+{
+       return f->f_path.dentry->d_inode;
+}
+
 #ifdef CONFIG_FILE_LOCKING
 extern int fcntl_getlk(struct file *, unsigned int, struct flock __user *);
 extern int fcntl_setlk(unsigned int, struct file *, unsigned int,
@@ -1251,7 +1266,7 @@ static inline struct dentry *file_dentry(const struct file *file)
 
 static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)
 {
-       return locks_lock_inode_wait(file_inode(filp), fl);
+       return locks_lock_inode_wait(locks_inode(filp), fl);
 }
 
 struct fasync_struct {
@@ -1459,6 +1474,7 @@ static inline void i_gid_write(struct inode *inode, gid_t gid)
 }
 
 extern struct timespec current_fs_time(struct super_block *sb);
+extern struct timespec current_time(struct inode *inode);
 
 /*
  * Snapshotting support.
@@ -1733,17 +1749,10 @@ struct inode_operations {
        int (*rmdir) (struct inode *,struct dentry *);
        int (*mknod) (struct inode *,struct dentry *,umode_t,dev_t);
        int (*rename) (struct inode *, struct dentry *,
-                       struct inode *, struct dentry *);
-       int (*rename2) (struct inode *, struct dentry *,
                        struct inode *, struct dentry *, unsigned int);
        int (*setattr) (struct dentry *, struct iattr *);
        int (*getattr) (struct vfsmount *mnt, struct dentry *, struct kstat *);
-       int (*setxattr) (struct dentry *, struct inode *,
-                        const char *, const void *, size_t, int);
-       ssize_t (*getxattr) (struct dentry *, struct inode *,
-                            const char *, void *, size_t);
        ssize_t (*listxattr) (struct dentry *, char *, size_t);
-       int (*removexattr) (struct dentry *, const char *);
        int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start,
                      u64 len);
        int (*update_time)(struct inode *, struct timespec *, int);
@@ -2006,7 +2015,6 @@ enum file_time_flags {
        S_VERSION = 8,
 };
 
-extern bool atime_needs_update(const struct path *, struct inode *);
 extern void touch_atime(const struct path *);
 static inline void file_accessed(struct file *file)
 {
@@ -2075,10 +2083,19 @@ struct super_block *sget(struct file_system_type *type,
                        int (*test)(struct super_block *,void *),
                        int (*set)(struct super_block *,void *),
                        int flags, void *data);
-extern struct dentry *mount_pseudo(struct file_system_type *, char *,
-       const struct super_operations *ops,
-       const struct dentry_operations *dops,
-       unsigned long);
+extern struct dentry *mount_pseudo_xattr(struct file_system_type *, char *,
+                                        const struct super_operations *ops,
+                                        const struct xattr_handler **xattr,
+                                        const struct dentry_operations *dops,
+                                        unsigned long);
+
+static inline struct dentry *
+mount_pseudo(struct file_system_type *fs_type, char *name,
+            const struct super_operations *ops,
+            const struct dentry_operations *dops, unsigned long magic)
+{
+       return mount_pseudo_xattr(fs_type, name, ops, NULL, dops, magic);
+}
 
 /* Alas, no aliases. Too much hassle with bringing module.h everywhere */
 #define fops_get(fops) \
@@ -2155,7 +2172,7 @@ static inline int mandatory_lock(struct inode *ino)
 
 static inline int locks_verify_locked(struct file *file)
 {
-       if (mandatory_lock(file_inode(file)))
+       if (mandatory_lock(locks_inode(file)))
                return locks_mandatory_locked(file);
        return 0;
 }
@@ -2482,11 +2499,6 @@ extern void make_bad_inode(struct inode *);
 extern bool is_bad_inode(struct inode *);
 
 #ifdef CONFIG_BLOCK
-static inline bool op_is_write(unsigned int op)
-{
-       return op == REQ_OP_READ ? false : true;
-}
-
 /*
  * return data direction, READ or WRITE
  */
@@ -2917,6 +2929,7 @@ extern int vfs_stat(const char __user *, struct kstat *);
 extern int vfs_lstat(const char __user *, struct kstat *);
 extern int vfs_fstat(unsigned int, struct kstat *);
 extern int vfs_fstatat(int , const char __user *, struct kstat *, int);
+extern const char *vfs_get_link(struct dentry *, struct delayed_call *);
 
 extern int __generic_block_fiemap(struct inode *inode,
                                  struct fiemap_extent_info *fieinfo,
@@ -2948,7 +2961,8 @@ extern int simple_open(struct inode *inode, struct file *file);
 extern int simple_link(struct dentry *, struct inode *, struct dentry *);
 extern int simple_unlink(struct inode *, struct dentry *);
 extern int simple_rmdir(struct inode *, struct dentry *);
-extern int simple_rename(struct inode *, struct dentry *, struct inode *, struct dentry *);
+extern int simple_rename(struct inode *, struct dentry *,
+                        struct inode *, struct dentry *, unsigned int);
 extern int noop_fsync(struct file *, loff_t, loff_t, int);
 extern int simple_empty(struct dentry *);
 extern int simple_readpage(struct file *file, struct page *page);
@@ -2993,7 +3007,7 @@ extern int buffer_migrate_page(struct address_space *,
 #define buffer_migrate_page NULL
 #endif
 
-extern int inode_change_ok(const struct inode *, struct iattr *);
+extern int setattr_prepare(struct dentry *, struct iattr *);
 extern int inode_newsize_ok(const struct inode *, loff_t offset);
 extern void setattr_copy(struct inode *inode, const struct iattr *attr);