Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[linux-2.6-microblaze.git] / include / linux / blk_types.h

diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index b3fc5d3..866f742 100644 (file)
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -8,6 +8,7 @@
 
 #include <linux/types.h>
 #include <linux/bvec.h>
+#include <linux/device.h>
 #include <linux/ktime.h>
 
 struct bio_set;
@@ -20,24 +21,29 @@ typedef void (bio_end_io_t) (struct bio *);
 struct bio_crypt_ctx;
 
 struct block_device {
-       dev_t                   bd_dev;  /* not a kdev_t - it's a search key */
+       sector_t                bd_start_sect;
+       struct disk_stats __percpu *bd_stats;
+       unsigned long           bd_stamp;
+       bool                    bd_read_only;   /* read-only policy */
+       dev_t                   bd_dev;
        int                     bd_openers;
        struct inode *          bd_inode;       /* will die */
        struct super_block *    bd_super;
        struct mutex            bd_mutex;       /* open/close mutex */
        void *                  bd_claiming;
+       struct device           bd_device;
        void *                  bd_holder;
        int                     bd_holders;
        bool                    bd_write_holder;
 #ifdef CONFIG_SYSFS
        struct list_head        bd_holder_disks;
 #endif
-       struct block_device *   bd_contains;
+       struct kobject          *bd_holder_dir;
        u8                      bd_partno;
-       struct hd_struct *      bd_part;
        /* number of times partitions within this device have been opened. */
        unsigned                bd_part_count;
-       int                     bd_invalidated;
+
+       spinlock_t              bd_size_lock; /* for bd_inode->i_size updates */
        struct gendisk *        bd_disk;
        struct backing_dev_info *bd_bdi;
 
@@ -45,8 +51,23 @@ struct block_device {
        int                     bd_fsfreeze_count;
        /* Mutex for freeze */
        struct mutex            bd_fsfreeze_mutex;
+       struct super_block      *bd_fsfreeze_sb;
+
+       struct partition_meta_info *bd_meta_info;
+#ifdef CONFIG_FAIL_MAKE_REQUEST
+       bool                    bd_make_it_fail;
+#endif
 } __randomize_layout;
 
+#define bdev_whole(_bdev) \
+       ((_bdev)->bd_disk->part0)
+
+#define dev_to_bdev(device) \
+       container_of((device), struct block_device, bd_device)
+
+#define bdev_kobj(_bdev) \
+       (&((_bdev)->bd_device.kobj))
+
 /*
  * Block error status values.  See block/blk-core:blk_errors for the details.
  * Alpha cannot write a byte atomically, so we need to use 32-bit value.
@@ -103,6 +124,24 @@ typedef u8 __bitwise blk_status_t;
  */
 #define BLK_STS_ZONE_RESOURCE  ((__force blk_status_t)14)
 
+/*
+ * BLK_STS_ZONE_OPEN_RESOURCE is returned from the driver in the completion
+ * path if the device returns a status indicating that too many zone resources
+ * are currently open. The same command should be successful if resubmitted
+ * after the number of open zones decreases below the device's limits, which is
+ * reported in the request_queue's max_open_zones.
+ */
+#define BLK_STS_ZONE_OPEN_RESOURCE     ((__force blk_status_t)15)
+
+/*
+ * BLK_STS_ZONE_ACTIVE_RESOURCE is returned from the driver in the completion
+ * path if the device returns a status indicating that too many zone resources
+ * are currently active. The same command should be successful if resubmitted
+ * after the number of active zones decreases below the device's limits, which
+ * is reported in the request_queue's max_active_zones.
+ */
+#define BLK_STS_ZONE_ACTIVE_RESOURCE   ((__force blk_status_t)16)
+
 /**
  * blk_path_error - returns true if error may be path related
  * @error: status the request was completed with
@@ -255,8 +294,6 @@ enum {
        BIO_NO_PAGE_REF,        /* don't put release vec pages */
        BIO_CLONED,             /* doesn't own data */
        BIO_BOUNCED,            /* bio is a bounce bio */
-       BIO_USER_MAPPED,        /* contains user pages */
-       BIO_NULL_MAPPED,        /* contains invalid user pages */
        BIO_WORKINGSET,         /* contains userspace workingset pages */
        BIO_QUIET,              /* Make BIO Quiet */
        BIO_CHAIN,              /* chained bio, ->bi_remaining in effect */