readv/writev: do the same MAX_RW_COUNT truncation that read/write does

[pandora-kernel.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index b2a6009..7b7b507 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -9,6 +9,7 @@
 #include <linux/limits.h>
 #include <linux/ioctl.h>
 #include <linux/blk_types.h>
+#include <linux/types.h>
 
 /*
  * It's silly to have NR_OPEN bigger than NR_FILE, but you can change
@@ -32,6 +33,12 @@
 #define SEEK_END       2       /* seek relative to end of file */
 #define SEEK_MAX       SEEK_END
 
+struct fstrim_range {
+       uint64_t start;
+       uint64_t len;
+       uint64_t minlen;
+};
+
 /* And dynamically-tunable limits and defaults: */
 struct files_stat_struct {
        unsigned long nr_files;         /* read only */
@@ -317,6 +324,7 @@ struct inodes_stat_t {
 #define FIGETBSZ   _IO(0x00,2) /* get the block size used for bmap */
 #define FIFREEZE       _IOWR('X', 119, int)    /* Freeze */
 #define FITHAW         _IOWR('X', 120, int)    /* Thaw */
+#define FITRIM         _IOWR('X', 121, struct fstrim_range)    /* Trim */
 
 #define        FS_IOC_GETFLAGS                 _IOR('f', 1, long)
 #define        FS_IOC_SETFLAGS                 _IOW('f', 2, long)
@@ -1604,6 +1612,7 @@ struct super_operations {
        ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t);
 #endif
        int (*bdev_try_to_free_page)(struct super_block*, struct page*, gfp_t);
+       int (*trim_fs) (struct super_block *, struct fstrim_range *);
 };
 
 /*
@@ -1763,6 +1772,8 @@ struct file_system_type {
        int fs_flags;
        int (*get_sb) (struct file_system_type *, int,
                       const char *, void *, struct vfsmount *);
+       struct dentry *(*mount) (struct file_system_type *, int,
+                      const char *, void *);
        void (*kill_sb) (struct super_block *);
        struct module *owner;
        struct file_system_type * next;
@@ -1778,17 +1789,25 @@ struct file_system_type {
        struct lock_class_key i_alloc_sem_key;
 };
 
-extern int get_sb_ns(struct file_system_type *fs_type, int flags, void *data,
-       int (*fill_super)(struct super_block *, void *, int),
-       struct vfsmount *mnt);
+extern struct dentry *mount_ns(struct file_system_type *fs_type, int flags,
+       void *data, int (*fill_super)(struct super_block *, void *, int));
+extern struct dentry *mount_bdev(struct file_system_type *fs_type,
+       int flags, const char *dev_name, void *data,
+       int (*fill_super)(struct super_block *, void *, int));
 extern int get_sb_bdev(struct file_system_type *fs_type,
        int flags, const char *dev_name, void *data,
        int (*fill_super)(struct super_block *, void *, int),
        struct vfsmount *mnt);
+extern struct dentry *mount_single(struct file_system_type *fs_type,
+       int flags, void *data,
+       int (*fill_super)(struct super_block *, void *, int));
 extern int get_sb_single(struct file_system_type *fs_type,
        int flags, void *data,
        int (*fill_super)(struct super_block *, void *, int),
        struct vfsmount *mnt);
+extern struct dentry *mount_nodev(struct file_system_type *fs_type,
+       int flags, void *data,
+       int (*fill_super)(struct super_block *, void *, int));
 extern int get_sb_nodev(struct file_system_type *fs_type,
        int flags, void *data,
        int (*fill_super)(struct super_block *, void *, int),
@@ -1804,9 +1823,8 @@ struct super_block *sget(struct file_system_type *type,
                        int (*test)(struct super_block *,void *),
                        int (*set)(struct super_block *,void *),
                        void *data);
-extern int get_sb_pseudo(struct file_system_type *, char *,
-       const struct super_operations *ops, unsigned long,
-       struct vfsmount *mnt);
+extern struct dentry *mount_pseudo(struct file_system_type *, char *,
+       const struct super_operations *ops, unsigned long);
 extern void simple_set_mnt(struct vfsmount *mnt, struct super_block *sb);
 
 static inline void sb_mark_dirty(struct super_block *sb)
@@ -1849,6 +1867,7 @@ extern int current_umask(void);
 /* /sys/fs */
 extern struct kobject *fs_kobj;
 
+#define MAX_RW_COUNT (INT_MAX & PAGE_CACHE_MASK)
 extern int rw_verify_area(int, struct file *, loff_t *, size_t);
 
 #define FLOCK_VERIFY_READ  1