1 files changed, 39 insertions, 12 deletions

diff --git a/drivers/md/md.h b/drivers/md/md.h
index f184b69ef337..8e4c75c00d46 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -97,6 +97,9 @@ struct mdk_rdev_s
         atomic_t        read_errors;    /* number of consecutive read errors that
                                          * we have tried to ignore.
                                          */
+        struct timespec last_read_error;        /* monotonic time since our
+                                                 * last read error
+                                                 */
         atomic_t        corrected_errors; /* number of corrected read errors,
                                            * for reporting to userspace and storing
                                            * in superblock.
@@ -280,17 +283,38 @@ struct mddev_s
         unsigned int                    max_write_behind; /* 0 = sync */
 
         struct bitmap                   *bitmap; /* the bitmap for the device */
-        struct file                     *bitmap_file; /* the bitmap file */
-        long                            bitmap_offset; /* offset from superblock of
-                                                        * start of bitmap. May be
-                                                        * negative, but not '0'
-                                                        */
-        long                            default_bitmap_offset; /* this is the offset to use when
-                                                                * hot-adding a bitmap.  It should
-                                                                * eventually be settable by sysfs.
-                                                                */
-
+        struct {
+                struct file             *file; /* the bitmap file */
+                loff_t                  offset; /* offset from superblock of
+                                                 * start of bitmap. May be
+                                                 * negative, but not '0'
+                                                 * For external metadata, offset
+                                                 * from start of device. 
+                                                 */
+                loff_t                  default_offset; /* this is the offset to use when
+                                                         * hot-adding a bitmap.  It should
+                                                         * eventually be settable by sysfs.
+                                                         */
+                struct mutex            mutex;
+                unsigned long           chunksize;
+                unsigned long           daemon_sleep; /* how many seconds between updates? */
+                unsigned long           max_write_behind; /* write-behind mode */
+                int                     external;
+        } bitmap_info;
+
+        atomic_t                        max_corr_read_errors; /* max read retries */
         struct list_head                all_mddevs;
+
+        /* Generic barrier handling.
+         * If there is a pending barrier request, all other
+         * writes are blocked while the devices are flushed.
+         * The last to finish a flush schedules a worker to
+         * submit the barrier request (without the barrier flag),
+         * then submit more flush requests.
+         */
+        struct bio *barrier;
+        atomic_t flush_pending;
+        struct work_struct barrier_work;
 };
 
 
@@ -353,7 +377,7 @@ 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)
 {
@@ -431,6 +455,7 @@ extern void md_done_sync(mddev_t *mddev, int blocks, int ok);
 extern void md_error(mddev_t *mddev, mdk_rdev_t *rdev);
 
 extern int mddev_congested(mddev_t *mddev, int bits);
+extern void md_barrier_request(mddev_t *mddev, struct bio *bio);
 extern void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev,
                            sector_t sector, int size, struct page *page);
 extern void md_super_wait(mddev_t *mddev);
@@ -443,6 +468,8 @@ 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 */