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Diffstat (limited to 'drivers/md/md.h')
-rw-r--r--drivers/md/md.h51
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 */