md: support updating bitmap parameters via sysfs.

[safe/jmp/linux-2.6] / drivers / md / md.h

diff --git a/drivers/md/md.h b/drivers/md/md.h
index 4b07e0a..fce0207 100644 (file)
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -282,11 +282,13 @@ struct mddev_s
        struct bitmap                   *bitmap; /* the bitmap for the device */
        struct {
                struct file             *file; /* the bitmap file */
-               long                    offset; /* offset from superblock of
+               loff_t                  offset; /* offset from superblock of
                                                 * start of bitmap. May be
                                                 * negative, but not '0'
+                                                * For external metadata, offset
+                                                * from start of device. 
                                                 */
-               long                    default_offset; /* this is the offset to use when
+               loff_t                  default_offset; /* this is the offset to use when
                                                         * hot-adding a bitmap.  It should
                                                         * eventually be settable by sysfs.
                                                         */
@@ -370,7 +372,7 @@ struct md_sysfs_entry {
        ssize_t (*show)(mddev_t *, char *);
        ssize_t (*store)(mddev_t *, const char *, size_t);
 };
-
+extern struct attribute_group md_bitmap_group;
 
 static inline char * mdname (mddev_t * mddev)
 {
@@ -461,6 +463,8 @@ extern void md_wait_for_blocked_rdev(mdk_rdev_t *rdev, mddev_t *mddev);
 extern void md_set_array_sectors(mddev_t *mddev, sector_t array_sectors);
 extern int md_check_no_bitmap(mddev_t *mddev);
 extern int md_integrity_register(mddev_t *mddev);
-void md_integrity_add_rdev(mdk_rdev_t *rdev, mddev_t *mddev);
+extern void md_integrity_add_rdev(mdk_rdev_t *rdev, mddev_t *mddev);
+extern int strict_strtoul_scaled(const char *cp, unsigned long *res, int scale);
+extern void restore_bitmap_write_access(struct file *file);
 
 #endif /* _MD_MD_H */