netfilter: nf_conntrack: fix hash resizing with namespaces

[safe/jmp/linux-2.6] / include / linux / genhd.h

diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 04524c2..9717081 100644 (file)
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -25,9 +25,6 @@ extern struct device_type part_type;
 extern struct kobject *block_depr;
 extern struct class block_class;
 
-extern const struct seq_operations partitions_op;
-extern const struct seq_operations diskstats_op;
-
 enum {
 /* These three have identical behaviour; use the second one if DOS FDISK gets
    confused about extended/logical partitions starting past cylinder 1023. */
@@ -59,6 +56,7 @@ enum {
 };
 
 #define DISK_MAX_PARTS                 256
+#define DISK_NAME_LEN                  32
 
 #include <linux/major.h>
 #include <linux/device.h>
@@ -92,6 +90,8 @@ struct disk_stats {
 struct hd_struct {
        sector_t start_sect;
        sector_t nr_sects;
+       sector_t alignment_offset;
+       unsigned int discard_alignment;
        struct device __dev;
        struct kobject *holder_dir;
        int policy, partno;
@@ -99,7 +99,7 @@ struct hd_struct {
        int make_it_fail;
 #endif
        unsigned long stamp;
-       int in_flight;
+       int in_flight[2];
 #ifdef CONFIG_SMP
        struct disk_stats *dkstats;
 #else
@@ -115,6 +115,7 @@ struct hd_struct {
 #define GENHD_FL_UP                            16
 #define GENHD_FL_SUPPRESS_PARTITION_INFO       32
 #define GENHD_FL_EXT_DEVT                      64 /* allow extended devt */
+#define GENHD_FL_NATIVE_CAPACITY               128
 
 #define BLK_SCSI_MAX_CMDS      (256)
 #define BLK_SCSI_CMD_PER_LONG  (BLK_SCSI_MAX_CMDS / (sizeof(long) * 8))
@@ -128,6 +129,7 @@ struct blk_scsi_cmd_filter {
 struct disk_part_tbl {
        struct rcu_head rcu_head;
        int len;
+       struct hd_struct *last_lookup;
        struct hd_struct *part[];
 };
 
@@ -140,8 +142,8 @@ struct gendisk {
        int minors;                     /* maximum number of minors, =1 for
                                          * disks that can't be partitioned. */
 
-       char disk_name[32];             /* name of major driver */
-
+       char disk_name[DISK_NAME_LEN];  /* name of major driver */
+       char *(*devnode)(struct gendisk *gd, mode_t *mode);
        /* Array of pointers to partitions indexed by partno.
         * Protected with matching bdev lock but stat and other
         * non-critical accesses use RCU.  Always access through
@@ -150,7 +152,7 @@ struct gendisk {
        struct disk_part_tbl *part_tbl;
        struct hd_struct part0;
 
-       struct block_device_operations *fops;
+       const struct block_device_operations *fops;
        struct request_queue *queue;
        void *private_data;
 
@@ -215,6 +217,7 @@ static inline void disk_put_part(struct hd_struct *part)
 #define DISK_PITER_REVERSE     (1 << 0) /* iterate in the reverse direction */
 #define DISK_PITER_INCL_EMPTY  (1 << 1) /* include 0-sized parts */
 #define DISK_PITER_INCL_PART0  (1 << 2) /* include partition 0 */
+#define DISK_PITER_INCL_EMPTY_PART0 (1 << 3) /* include empty partition 0 */
 
 struct disk_part_iter {
        struct gendisk          *disk;
@@ -253,9 +256,9 @@ extern struct hd_struct *disk_map_sector_rcu(struct gendisk *disk,
 #define part_stat_read(part, field)                                    \
 ({                                                                     \
        typeof((part)->dkstats->field) res = 0;                         \
-       int i;                                                          \
-       for_each_possible_cpu(i)                                        \
-               res += per_cpu_ptr((part)->dkstats, i)->field;          \
+       unsigned int _cpu;                                              \
+       for_each_possible_cpu(_cpu)                                     \
+               res += per_cpu_ptr((part)->dkstats, _cpu)->field;       \
        res;                                                            \
 })
 
@@ -320,25 +323,29 @@ static inline void free_part_stats(struct hd_struct *part)
 #define part_stat_sub(cpu, gendiskp, field, subnd)                     \
        part_stat_add(cpu, gendiskp, field, -subnd)
 
-static inline void part_inc_in_flight(struct hd_struct *part)
+static inline void part_inc_in_flight(struct hd_struct *part, int rw)
 {
-       part->in_flight++;
+       part->in_flight[rw]++;
        if (part->partno)
-               part_to_disk(part)->part0.in_flight++;
+               part_to_disk(part)->part0.in_flight[rw]++;
 }
 
-static inline void part_dec_in_flight(struct hd_struct *part)
+static inline void part_dec_in_flight(struct hd_struct *part, int rw)
 {
-       part->in_flight--;
+       part->in_flight[rw]--;
        if (part->partno)
-               part_to_disk(part)->part0.in_flight--;
+               part_to_disk(part)->part0.in_flight[rw]--;
+}
+
+static inline int part_in_flight(struct hd_struct *part)
+{
+       return part->in_flight[0] + part->in_flight[1];
 }
 
-/* drivers/block/ll_rw_blk.c */
+/* block/blk-core.c */
 extern void part_round_stats(int cpu, struct hd_struct *part);
 
-/* drivers/block/genhd.c */
-extern int get_blkdev_list(char *, int);
+/* block/genhd.c */
 extern void add_disk(struct gendisk *disk);
 extern void del_gendisk(struct gendisk *gp);
 extern void unlink_gendisk(struct gendisk *gp);
@@ -524,7 +531,9 @@ extern char *disk_name (struct gendisk *hd, int partno, char *buf);
 
 extern int disk_expand_part_tbl(struct gendisk *disk, int target);
 extern int rescan_partitions(struct gendisk *disk, struct block_device *bdev);
-extern int __must_check add_partition(struct gendisk *, int, sector_t, sector_t, int);
+extern struct hd_struct * __must_check add_partition(struct gendisk *disk,
+                                                    int partno, sector_t start,
+                                                    sector_t len, int flags);
 extern void delete_partition(struct gendisk *, int);
 extern void printk_all_partitions(void);
 
@@ -543,6 +552,8 @@ extern ssize_t part_size_show(struct device *dev,
                              struct device_attribute *attr, char *buf);
 extern ssize_t part_stat_show(struct device *dev,
                              struct device_attribute *attr, char *buf);
+extern ssize_t part_inflight_show(struct device *dev,
+                             struct device_attribute *attr, char *buf);
 #ifdef CONFIG_FAIL_MAKE_REQUEST
 extern ssize_t part_fail_show(struct device *dev,
                              struct device_attribute *attr, char *buf);