From 68c4d4a7875c59f2e4b72901ab11ba978e75bde0 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 22 May 2008 17:21:08 -0400 Subject: [PATCH] block: make proc files seq_start use the class_find_device() Use the proper class iterator function instead of mucking around in the internals of the class structures. Cc: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- block/genhd.c | 31 +++++++++++++++++-------------- 1 file changed, 17 insertions(+), 14 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index 68a5f28007e4..f03bdadc52ac 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -291,18 +291,25 @@ void __init printk_all_partitions(void) #ifdef CONFIG_PROC_FS /* iterator */ +static int find_start(struct device *dev, void *data) +{ + loff_t k = *(loff_t *)data; + + if (dev->type != &disk_type) + return 0; + if (!k--) + return 1; + return 0; +} + static void *part_start(struct seq_file *part, loff_t *pos) { - loff_t k = *pos; struct device *dev; mutex_lock(&block_class_lock); - list_for_each_entry(dev, &block_class.devices, node) { - if (dev->type != &disk_type) - continue; - if (!k--) - return dev_to_disk(dev); - } + dev = class_find_device(&block_class, NULL, (void *)pos, find_start); + if (dev) + return dev_to_disk(dev); return NULL; } @@ -555,16 +562,12 @@ static struct device_type disk_type = { static void *diskstats_start(struct seq_file *part, loff_t *pos) { - loff_t k = *pos; struct device *dev; mutex_lock(&block_class_lock); - list_for_each_entry(dev, &block_class.devices, node) { - if (dev->type != &disk_type) - continue; - if (!k--) - return dev_to_disk(dev); - } + dev = class_find_device(&block_class, NULL, (void *)pos, find_start); + if (dev) + return dev_to_disk(dev); return NULL; } -- 2.30.2