For HAL we want to get notified about I/O errors of block devices.
This is especially useful for devices we are unable to poll and
therefore can't know if something goes wrong here.
Signed-off-by: David Zeuthen <[EMAIL PROTECTED]>
Signed-off-by: Kay Sievers <[EMAIL PROTECTED]>
===== fs/buffer.c 1.270 vs edited =====
--- 1.270/fs/buffer.c 2005-01-21 06:02:13 +01:00
+++ edited/fs/buffer.c 2005-02-17 22:56:05 +01:00
@@ -105,6 +105,7 @@ static void buffer_io_error(struct buffe
printk(KERN_ERR "Buffer I/O error on device %s, logical block %Lu\n",
bdevname(bh->b_bdev, b),
(unsigned long long)bh->b_blocknr);
+ kobject_uevent(&bh->b_bdev->bd_disk->kobj, KOBJ_IO_ERROR, NULL);
}
/*
@@ -550,7 +551,8 @@ static void end_buffer_async_read(struct
set_buffer_uptodate(bh);
} else {
clear_buffer_uptodate(bh);
- buffer_io_error(bh);
+ if (printk_ratelimit())
+ buffer_io_error(bh);
SetPageError(page);
}
===== include/linux/kobject_uevent.h 1.6 vs edited =====
--- 1.6/include/linux/kobject_uevent.h 2004-11-08 20:43:30 +01:00
+++ edited/include/linux/kobject_uevent.h 2005-02-17 23:10:05 +01:00
@@ -29,6 +29,7 @@ enum kobject_action {
KOBJ_UMOUNT = (__force kobject_action_t) 0x05, /* umount event
for block devices */
KOBJ_OFFLINE = (__force kobject_action_t) 0x06, /* offline
event for hotplug devices */
KOBJ_ONLINE = (__force kobject_action_t) 0x07, /* online event
for hotplug devices */
+ KOBJ_IO_ERROR = (__force kobject_action_t) 0x08, /* I/O error
for devices */
};
===== lib/kobject_uevent.c 1.18 vs edited =====
--- 1.18/lib/kobject_uevent.c 2005-01-08 06:44:13 +01:00
+++ edited/lib/kobject_uevent.c 2005-02-17 22:52:03 +01:00
@@ -44,6 +44,8 @@ static char *action_to_string(enum kobje
return "offline";
case KOBJ_ONLINE:
return "online";
+ case KOBJ_IO_ERROR:
+ return "io_error";
default:
return NULL;
}
-
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