[PATCH] Update cfq io scheduler to time sliced design

[linux-2.6-omap-h63xx.git] / drivers / block / genhd.c

diff --git a/drivers/block/genhd.c b/drivers/block/genhd.c
index 53f7d846b747f35692f782e0bc84f1fa8639a42e..47fd3659a061786967d2d150b5e9ba3212057bc9 100644 (file)
--- a/drivers/block/genhd.c
+++ b/drivers/block/genhd.c
@@ -40,7 +40,7 @@ static inline int major_to_index(int major)
 
 #ifdef CONFIG_PROC_FS
 /* get block device names in somewhat random order */
-int get_blkdev_list(char *p)
+int get_blkdev_list(char *p, int used)
 {
        struct blk_major_name *n;
        int i, len;
@@ -49,10 +49,18 @@ int get_blkdev_list(char *p)
 
        down(&block_subsys_sem);
        for (i = 0; i < ARRAY_SIZE(major_names); i++) {
-               for (n = major_names[i]; n; n = n->next)
+               for (n = major_names[i]; n; n = n->next) {
+                       /*
+                        * If the curent string plus the 5 extra characters
+                        * in the line would run us off the page, then we're done
+                        */
+                       if ((len + used + strlen(n->name) + 5) >= PAGE_SIZE)
+                               goto page_full;
                        len += sprintf(p+len, "%3d %s\n",
                                       n->major, n->name);
+               }
        }
+page_full:
        up(&block_subsys_sem);
 
        return len;
@@ -582,10 +590,16 @@ struct seq_operations diskstats_op = {
        .show   = diskstats_show
 };
 
-
 struct gendisk *alloc_disk(int minors)
 {
-       struct gendisk *disk = kmalloc(sizeof(struct gendisk), GFP_KERNEL);
+       return alloc_disk_node(minors, -1);
+}
+
+struct gendisk *alloc_disk_node(int minors, int node_id)
+{
+       struct gendisk *disk;
+
+       disk = kmalloc_node(sizeof(struct gendisk), GFP_KERNEL, node_id);
        if (disk) {
                memset(disk, 0, sizeof(struct gendisk));
                if (!init_disk_stats(disk)) {
@@ -594,7 +608,7 @@ struct gendisk *alloc_disk(int minors)
                }
                if (minors > 1) {
                        int size = (minors - 1) * sizeof(struct hd_struct *);
-                       disk->part = kmalloc(size, GFP_KERNEL);
+                       disk->part = kmalloc_node(size, GFP_KERNEL, node_id);
                        if (!disk->part) {
                                kfree(disk);
                                return NULL;
@@ -610,6 +624,7 @@ struct gendisk *alloc_disk(int minors)
 }
 
 EXPORT_SYMBOL(alloc_disk);
+EXPORT_SYMBOL(alloc_disk_node);
 
 struct kobject *get_disk(struct gendisk *disk)
 {